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</ul> </li> <li id="toc-參見" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#參見"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>參見</span> </div> </a> <ul id="toc-參見-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-參考資料" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#參考資料"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>參考資料</span> </div> </a> <ul id="toc-參考資料-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-外部連結" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#外部連結"> <div class="vector-toc-text"> <span class="vector-toc-numb">9</span> <span>外部連結</span> </div> </a> <ul id="toc-外部連結-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="目录" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" title="目录" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="开关目录" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">开关目录</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">秒</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="前往另一种语言写成的文章。160种语言可用" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-160" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">160种语言</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Sekonde" title="Sekonde – 南非荷兰语" lang="af" hreflang="af" data-title="Sekonde" data-language-autonym="Afrikaans" data-language-local-name="南非荷兰语" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-als mw-list-item"><a href="https://als.wikipedia.org/wiki/Sekunde" title="Sekunde – 瑞士德语" lang="gsw" hreflang="gsw" data-title="Sekunde" data-language-autonym="Alemannisch" data-language-local-name="瑞士德语" class="interlanguage-link-target"><span>Alemannisch</span></a></li><li class="interlanguage-link interwiki-am mw-list-item"><a href="https://am.wikipedia.org/wiki/%E1%88%B4%E1%8A%AE%E1%8A%95%E1%8B%B5" title="ሴኮንድ – 阿姆哈拉语" lang="am" hreflang="am" data-title="ሴኮንድ" data-language-autonym="አማርኛ" data-language-local-name="阿姆哈拉语" class="interlanguage-link-target"><span>አማርኛ</span></a></li><li class="interlanguage-link interwiki-an mw-list-item"><a href="https://an.wikipedia.org/wiki/Segundo" title="Segundo – 阿拉贡语" lang="an" hreflang="an" data-title="Segundo" data-language-autonym="Aragonés" data-language-local-name="阿拉贡语" class="interlanguage-link-target"><span>Aragonés</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%AB%D8%A7%D9%86%D9%8A%D8%A9" title="ثانية – 阿拉伯语" lang="ar" hreflang="ar" data-title="ثانية" data-language-autonym="العربية" data-language-local-name="阿拉伯语" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-arc mw-list-item"><a href="https://arc.wikipedia.org/wiki/%DC%AA%DC%A6%DC%A6%DC%90" title="ܪܦܦܐ – 阿拉米语" lang="arc" hreflang="arc" data-title="ܪܦܦܐ" data-language-autonym="ܐܪܡܝܐ" data-language-local-name="阿拉米语" class="interlanguage-link-target"><span>ܐܪܡܝܐ</span></a></li><li class="interlanguage-link interwiki-ary mw-list-item"><a href="https://ary.wikipedia.org/wiki/%D8%AA%D8%A7%D9%86%D9%8A%D8%A9" title="تانية – 摩洛哥阿拉伯文" lang="ary" hreflang="ary" data-title="تانية" data-language-autonym="الدارجة" data-language-local-name="摩洛哥阿拉伯文" class="interlanguage-link-target"><span>الدارجة</span></a></li><li class="interlanguage-link interwiki-arz mw-list-item"><a href="https://arz.wikipedia.org/wiki/%D8%B3%D8%A7%D9%86%D9%8A%D9%87" title="سانيه – 埃及阿拉伯文" lang="arz" hreflang="arz" data-title="سانيه" data-language-autonym="مصرى" data-language-local-name="埃及阿拉伯文" class="interlanguage-link-target"><span>مصرى</span></a></li><li class="interlanguage-link interwiki-as mw-list-item"><a href="https://as.wikipedia.org/wiki/%E0%A6%9B%E0%A7%87%E0%A6%95%E0%A7%87%E0%A6%A3%E0%A7%8D%E0%A6%A1" title="ছেকেণ্ড – 阿萨姆语" lang="as" hreflang="as" data-title="ছেকেণ্ড" data-language-autonym="অসমীয়া" data-language-local-name="阿萨姆语" class="interlanguage-link-target"><span>অসমীয়া</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Segundu" title="Segundu – 阿斯图里亚斯语" lang="ast" hreflang="ast" data-title="Segundu" data-language-autonym="Asturianu" data-language-local-name="阿斯图里亚斯语" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Saniy%C9%99" title="Saniyə – 阿塞拜疆语" lang="az" hreflang="az" data-title="Saniyə" data-language-autonym="Azərbaycanca" data-language-local-name="阿塞拜疆语" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-azb mw-list-item"><a href="https://azb.wikipedia.org/wiki/%D8%AB%D8%A7%D9%86%DB%8C%D9%87" title="ثانیه – South Azerbaijani" lang="azb" hreflang="azb" data-title="ثانیه" data-language-autonym="تۆرکجه" data-language-local-name="South Azerbaijani" class="interlanguage-link-target"><span>تۆرکجه</span></a></li><li class="interlanguage-link interwiki-ba mw-list-item"><a href="https://ba.wikipedia.org/wiki/%D0%A1%D0%B5%D0%BA%D1%83%D0%BD%D0%B4" title="Секунд – 巴什基尔语" lang="ba" hreflang="ba" data-title="Секунд" data-language-autonym="Башҡортса" data-language-local-name="巴什基尔语" class="interlanguage-link-target"><span>Башҡортса</span></a></li><li class="interlanguage-link interwiki-ban mw-list-item"><a href="https://ban.wikipedia.org/wiki/Detik" title="Detik – 巴厘语" lang="ban" hreflang="ban" data-title="Detik" data-language-autonym="Basa Bali" data-language-local-name="巴厘语" class="interlanguage-link-target"><span>Basa Bali</span></a></li><li class="interlanguage-link interwiki-bar mw-list-item"><a href="https://bar.wikipedia.org/wiki/Sekund" title="Sekund – 巴伐利亞文" lang="bar" hreflang="bar" data-title="Sekund" data-language-autonym="Boarisch" data-language-local-name="巴伐利亞文" class="interlanguage-link-target"><span>Boarisch</span></a></li><li class="interlanguage-link interwiki-bat-smg mw-list-item"><a href="https://bat-smg.wikipedia.org/wiki/Sekond%C4%97" title="Sekondė – 薩莫吉希亞文" lang="sgs" hreflang="sgs" data-title="Sekondė" data-language-autonym="Žemaitėška" data-language-local-name="薩莫吉希亞文" class="interlanguage-link-target"><span>Žemaitėška</span></a></li><li class="interlanguage-link interwiki-bcl mw-list-item"><a href="https://bcl.wikipedia.org/wiki/Segundo" title="Segundo – Central Bikol" lang="bcl" hreflang="bcl" data-title="Segundo" data-language-autonym="Bikol Central" data-language-local-name="Central Bikol" class="interlanguage-link-target"><span>Bikol Central</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%A1%D0%B5%D0%BA%D1%83%D0%BD%D0%B4%D0%B0" title="Секунда – 白俄罗斯语" lang="be" hreflang="be" data-title="Секунда" data-language-autonym="Беларуская" data-language-local-name="白俄罗斯语" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-be-x-old mw-list-item"><a href="https://be-tarask.wikipedia.org/wiki/%D0%A1%D1%8D%D0%BA%D1%83%D0%BD%D0%B4%D0%B0" title="Сэкунда – Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="Сэкунда" data-language-autonym="Беларуская (тарашкевіца)" data-language-local-name="Belarusian (Taraškievica orthography)" class="interlanguage-link-target"><span>Беларуская (тарашкевіца)</span></a></li><li class="interlanguage-link interwiki-bew mw-list-item"><a href="https://bew.wikipedia.org/wiki/Sekon" title="Sekon – 貝塔維文" lang="bew" hreflang="bew" data-title="Sekon" data-language-autonym="Betawi" data-language-local-name="貝塔維文" class="interlanguage-link-target"><span>Betawi</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%A1%D0%B5%D0%BA%D1%83%D0%BD%D0%B4%D0%B0" title="Секунда – 保加利亚语" lang="bg" hreflang="bg" data-title="Секунда" data-language-autonym="Български" data-language-local-name="保加利亚语" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%B8%E0%A7%87%E0%A6%95%E0%A7%87%E0%A6%A8%E0%A7%8D%E0%A6%A1" title="সেকেন্ড – 孟加拉语" lang="bn" hreflang="bn" data-title="সেকেন্ড" data-language-autonym="বাংলা" data-language-local-name="孟加拉语" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-bo mw-list-item"><a href="https://bo.wikipedia.org/wiki/%E0%BD%A6%E0%BE%90%E0%BD%A2%E0%BC%8B%E0%BD%86%E0%BC%8D" title="སྐར་ཆ། – 藏语" lang="bo" hreflang="bo" data-title="སྐར་ཆ།" data-language-autonym="བོད་ཡིག" data-language-local-name="藏语" class="interlanguage-link-target"><span>བོད་ཡིག</span></a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/Eilenn_(amzer)" title="Eilenn (amzer) – 布列塔尼语" lang="br" hreflang="br" data-title="Eilenn (amzer)" data-language-autonym="Brezhoneg" data-language-local-name="布列塔尼语" class="interlanguage-link-target"><span>Brezhoneg</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Sekunda" title="Sekunda – 波斯尼亚语" lang="bs" hreflang="bs" data-title="Sekunda" data-language-autonym="Bosanski" data-language-local-name="波斯尼亚语" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Segon" title="Segon – 加泰罗尼亚语" lang="ca" hreflang="ca" data-title="Segon" data-language-autonym="Català" data-language-local-name="加泰罗尼亚语" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cdo mw-list-item"><a href="https://cdo.wikipedia.org/wiki/Mi%C4%93u" title="Miēu – Mindong" lang="cdo" hreflang="cdo" data-title="Miēu" data-language-autonym="閩東語 / Mìng-dĕ̤ng-ngṳ̄" data-language-local-name="Mindong" class="interlanguage-link-target"><span>閩東語 / Mìng-dĕ̤ng-ngṳ̄</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%DA%86%D8%B1%DA%A9%DB%95" title="چرکە – 中库尔德语" lang="ckb" hreflang="ckb" data-title="چرکە" data-language-autonym="کوردی" data-language-local-name="中库尔德语" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-crh mw-list-item"><a href="https://crh.wikipedia.org/wiki/Saniye" title="Saniye – 克里米亚鞑靼语" lang="crh" hreflang="crh" data-title="Saniye" data-language-autonym="Qırımtatarca" data-language-local-name="克里米亚鞑靼语" class="interlanguage-link-target"><span>Qırımtatarca</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Sekunda" title="Sekunda – 捷克语" lang="cs" hreflang="cs" data-title="Sekunda" data-language-autonym="Čeština" data-language-local-name="捷克语" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-cu mw-list-item"><a href="https://cu.wikipedia.org/wiki/%D0%94%D1%94%D1%B5%D1%82%D1%94%D1%80%D0%BE%D0%BB%D1%94%D0%BF%D1%82%D0%BE" title="Дєѵтєролєпто – 教会斯拉夫语" lang="cu" hreflang="cu" data-title="Дєѵтєролєпто" data-language-autonym="Словѣньскъ / ⰔⰎⰑⰂⰡⰐⰠⰔⰍⰟ" data-language-local-name="教会斯拉夫语" class="interlanguage-link-target"><span>Словѣньскъ / ⰔⰎⰑⰂⰡⰐⰠⰔⰍⰟ</span></a></li><li class="interlanguage-link interwiki-cv mw-list-item"><a href="https://cv.wikipedia.org/wiki/%C3%87%D0%B5%D0%BA%D0%BA%D1%83%D0%BD%D1%82" title="Çеккунт – 楚瓦什语" lang="cv" hreflang="cv" data-title="Çеккунт" data-language-autonym="Чӑвашла" data-language-local-name="楚瓦什语" class="interlanguage-link-target"><span>Чӑвашла</span></a></li><li class="interlanguage-link interwiki-cy mw-list-item"><a href="https://cy.wikipedia.org/wiki/Eiliad" title="Eiliad – 威尔士语" lang="cy" hreflang="cy" data-title="Eiliad" data-language-autonym="Cymraeg" data-language-local-name="威尔士语" class="interlanguage-link-target"><span>Cymraeg</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Sekund" title="Sekund – 丹麦语" lang="da" hreflang="da" data-title="Sekund" data-language-autonym="Dansk" data-language-local-name="丹麦语" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Sekunde" title="Sekunde – 德语" lang="de" hreflang="de" data-title="Sekunde" data-language-autonym="Deutsch" data-language-local-name="德语" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%94%CE%B5%CF%85%CF%84%CE%B5%CF%81%CF%8C%CE%BB%CE%B5%CF%80%CF%84%CE%BF" title="Δευτερόλεπτο – 希腊语" lang="el" hreflang="el" data-title="Δευτερόλεπτο" data-language-autonym="Ελληνικά" data-language-local-name="希腊语" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Second" title="Second – 英语" lang="en" hreflang="en" data-title="Second" data-language-autonym="English" data-language-local-name="英语" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Sekundo" title="Sekundo – 世界语" lang="eo" hreflang="eo" data-title="Sekundo" data-language-autonym="Esperanto" data-language-local-name="世界语" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Segundo" title="Segundo – 西班牙语" lang="es" hreflang="es" data-title="Segundo" data-language-autonym="Español" data-language-local-name="西班牙语" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Sekund" title="Sekund – 爱沙尼亚语" lang="et" hreflang="et" data-title="Sekund" data-language-autonym="Eesti" data-language-local-name="爱沙尼亚语" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Segundo" title="Segundo – 巴斯克语" lang="eu" hreflang="eu" data-title="Segundo" data-language-autonym="Euskara" data-language-local-name="巴斯克语" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%AB%D8%A7%D9%86%DB%8C%D9%87" title="ثانیه – 波斯语" lang="fa" hreflang="fa" data-title="ثانیه" data-language-autonym="فارسی" data-language-local-name="波斯语" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Sekunti" title="Sekunti – 芬兰语" lang="fi" hreflang="fi" data-title="Sekunti" data-language-autonym="Suomi" data-language-local-name="芬兰语" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fj mw-list-item"><a href="https://fj.wikipedia.org/wiki/Sekodi" title="Sekodi – 斐济语" lang="fj" hreflang="fj" data-title="Sekodi" data-language-autonym="Na Vosa Vakaviti" data-language-local-name="斐济语" class="interlanguage-link-target"><span>Na Vosa Vakaviti</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Seconde_(temps)" title="Seconde (temps) – 法语" lang="fr" hreflang="fr" data-title="Seconde (temps)" data-language-autonym="Français" data-language-local-name="法语" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-frr mw-list-item"><a href="https://frr.wikipedia.org/wiki/Sekund" title="Sekund – 北弗里西亚语" lang="frr" hreflang="frr" data-title="Sekund" data-language-autonym="Nordfriisk" data-language-local-name="北弗里西亚语" class="interlanguage-link-target"><span>Nordfriisk</span></a></li><li class="interlanguage-link interwiki-fur mw-list-item"><a href="https://fur.wikipedia.org/wiki/Secont" title="Secont – 弗留利语" lang="fur" hreflang="fur" data-title="Secont" data-language-autonym="Furlan" data-language-local-name="弗留利语" class="interlanguage-link-target"><span>Furlan</span></a></li><li class="interlanguage-link interwiki-fy mw-list-item"><a href="https://fy.wikipedia.org/wiki/Sekonde" title="Sekonde – 西弗里西亚语" lang="fy" hreflang="fy" data-title="Sekonde" data-language-autonym="Frysk" data-language-local-name="西弗里西亚语" class="interlanguage-link-target"><span>Frysk</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Soicind" title="Soicind – 爱尔兰语" lang="ga" hreflang="ga" data-title="Soicind" data-language-autonym="Gaeilge" data-language-local-name="爱尔兰语" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gan mw-list-item"><a href="https://gan.wikipedia.org/wiki/%E7%A7%92" title="秒 – 赣语" lang="gan" hreflang="gan" data-title="秒" data-language-autonym="贛語" data-language-local-name="赣语" class="interlanguage-link-target"><span>贛語</span></a></li><li class="interlanguage-link interwiki-gcr mw-list-item"><a href="https://gcr.wikipedia.org/wiki/S%C3%A9gonn" title="Ségonn – Guianan Creole" lang="gcr" hreflang="gcr" data-title="Ségonn" data-language-autonym="Kriyòl gwiyannen" data-language-local-name="Guianan Creole" class="interlanguage-link-target"><span>Kriyòl gwiyannen</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Segundo" title="Segundo – 加利西亚语" lang="gl" hreflang="gl" data-title="Segundo" data-language-autonym="Galego" data-language-local-name="加利西亚语" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-gn mw-list-item"><a href="https://gn.wikipedia.org/wiki/Aravo%27ive" title="Aravo'ive – 瓜拉尼语" lang="gn" hreflang="gn" data-title="Aravo'ive" data-language-autonym="Avañe'ẽ" data-language-local-name="瓜拉尼语" class="interlanguage-link-target"><span>Avañe'ẽ</span></a></li><li class="interlanguage-link interwiki-gu mw-list-item"><a href="https://gu.wikipedia.org/wiki/%E0%AA%B8%E0%AB%87%E0%AA%95%E0%AA%A8%E0%AB%8D%E0%AA%A1" title="સેકન્ડ – 古吉拉特语" lang="gu" hreflang="gu" data-title="સેકન્ડ" data-language-autonym="ગુજરાતી" data-language-local-name="古吉拉特语" class="interlanguage-link-target"><span>ગુજરાતી</span></a></li><li class="interlanguage-link interwiki-ha mw-list-item"><a href="https://ha.wikipedia.org/wiki/Sakan" title="Sakan – 豪萨语" lang="ha" hreflang="ha" data-title="Sakan" data-language-autonym="Hausa" data-language-local-name="豪萨语" class="interlanguage-link-target"><span>Hausa</span></a></li><li class="interlanguage-link interwiki-hak mw-list-item"><a href="https://hak.wikipedia.org/wiki/Mi%C3%A9u" title="Miéu – 客家语" lang="hak" hreflang="hak" data-title="Miéu" data-language-autonym="客家語 / Hak-kâ-ngî" data-language-local-name="客家语" class="interlanguage-link-target"><span>客家語 / Hak-kâ-ngî</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A9%D7%A0%D7%99%D7%99%D7%94" title="שנייה – 希伯来语" lang="he" hreflang="he" data-title="שנייה" data-language-autonym="עברית" data-language-local-name="希伯来语" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%B8%E0%A5%87%E0%A4%95%E0%A5%87%E0%A4%82%E0%A4%A1" title="सेकेंड – 印地语" lang="hi" hreflang="hi" data-title="सेकेंड" data-language-autonym="हिन्दी" data-language-local-name="印地语" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hif mw-list-item"><a href="https://hif.wikipedia.org/wiki/Second" title="Second – 斐濟印地文" lang="hif" hreflang="hif" data-title="Second" data-language-autonym="Fiji Hindi" data-language-local-name="斐濟印地文" class="interlanguage-link-target"><span>Fiji Hindi</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Sekunda" title="Sekunda – 克罗地亚语" lang="hr" hreflang="hr" data-title="Sekunda" data-language-autonym="Hrvatski" data-language-local-name="克罗地亚语" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-ht mw-list-item"><a href="https://ht.wikipedia.org/wiki/Segond_(tan)" title="Segond (tan) – 海地克里奥尔语" lang="ht" hreflang="ht" data-title="Segond (tan)" data-language-autonym="Kreyòl ayisyen" data-language-local-name="海地克里奥尔语" class="interlanguage-link-target"><span>Kreyòl ayisyen</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/M%C3%A1sodperc" title="Másodperc – 匈牙利语" lang="hu" hreflang="hu" data-title="Másodperc" data-language-autonym="Magyar" data-language-local-name="匈牙利语" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D5%8E%D5%A1%D5%B5%D6%80%D5%AF%D5%B5%D5%A1%D5%B6" title="Վայրկյան – 亚美尼亚语" lang="hy" hreflang="hy" data-title="Վայրկյան" data-language-autonym="Հայերեն" data-language-local-name="亚美尼亚语" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-hyw mw-list-item"><a href="https://hyw.wikipedia.org/wiki/%D4%B5%D6%80%D5%AF%D5%BE%D5%A1%D5%B5%D6%80%D5%AF%D5%A5%D5%A1%D5%B6" title="Երկվայրկեան – Western Armenian" lang="hyw" hreflang="hyw" data-title="Երկվայրկեան" data-language-autonym="Արեւմտահայերէն" data-language-local-name="Western Armenian" class="interlanguage-link-target"><span>Արեւմտահայերէն</span></a></li><li class="interlanguage-link interwiki-ia mw-list-item"><a href="https://ia.wikipedia.org/wiki/Secunda" title="Secunda – 国际语" lang="ia" hreflang="ia" data-title="Secunda" data-language-autonym="Interlingua" data-language-local-name="国际语" class="interlanguage-link-target"><span>Interlingua</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Detik" title="Detik – 印度尼西亚语" lang="id" hreflang="id" data-title="Detik" data-language-autonym="Bahasa Indonesia" data-language-local-name="印度尼西亚语" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-ie mw-list-item"><a href="https://ie.wikipedia.org/wiki/Seconde" title="Seconde – 国际文字（E）" lang="ie" hreflang="ie" data-title="Seconde" data-language-autonym="Interlingue" data-language-local-name="国际文字（E）" class="interlanguage-link-target"><span>Interlingue</span></a></li><li class="interlanguage-link interwiki-ilo mw-list-item"><a href="https://ilo.wikipedia.org/wiki/Segundo" title="Segundo – 伊洛卡诺语" lang="ilo" hreflang="ilo" data-title="Segundo" data-language-autonym="Ilokano" data-language-local-name="伊洛卡诺语" class="interlanguage-link-target"><span>Ilokano</span></a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Sekundo" title="Sekundo – 伊多语" lang="io" hreflang="io" data-title="Sekundo" data-language-autonym="Ido" data-language-local-name="伊多语" class="interlanguage-link-target"><span>Ido</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/Sek%C3%BAnda" title="Sekúnda – 冰岛语" lang="is" hreflang="is" data-title="Sekúnda" data-language-autonym="Íslenska" data-language-local-name="冰岛语" class="interlanguage-link-target"><span>Íslenska</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Secondo" title="Secondo – 意大利语" lang="it" hreflang="it" data-title="Secondo" data-language-autonym="Italiano" data-language-local-name="意大利语" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja badge-Q17437798 badge-goodarticle mw-list-item" title="优良条目"><a href="https://ja.wikipedia.org/wiki/%E7%A7%92" title="秒 – 日语" lang="ja" hreflang="ja" data-title="秒" data-language-autonym="日本語" data-language-local-name="日语" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-jam mw-list-item"><a href="https://jam.wikipedia.org/wiki/Sekan" title="Sekan – 牙買加克里奧爾英文" lang="jam" hreflang="jam" data-title="Sekan" data-language-autonym="Patois" data-language-local-name="牙買加克里奧爾英文" class="interlanguage-link-target"><span>Patois</span></a></li><li class="interlanguage-link interwiki-jbo mw-list-item"><a href="https://jbo.wikipedia.org/wiki/snidu" title="snidu – 逻辑语" lang="jbo" hreflang="jbo" data-title="snidu" data-language-autonym="La .lojban." data-language-local-name="逻辑语" class="interlanguage-link-target"><span>La .lojban.</span></a></li><li class="interlanguage-link interwiki-jv mw-list-item"><a href="https://jv.wikipedia.org/wiki/Detik" title="Detik – 爪哇语" lang="jv" hreflang="jv" data-title="Detik" data-language-autonym="Jawa" data-language-local-name="爪哇语" class="interlanguage-link-target"><span>Jawa</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%AC%E1%83%90%E1%83%9B%E1%83%98" title="წამი – 格鲁吉亚语" lang="ka" hreflang="ka" data-title="წამი" data-language-autonym="ქართული" data-language-local-name="格鲁吉亚语" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-kab mw-list-item"><a href="https://kab.wikipedia.org/wiki/Tasint" title="Tasint – 卡拜尔语" lang="kab" hreflang="kab" data-title="Tasint" data-language-autonym="Taqbaylit" data-language-local-name="卡拜尔语" class="interlanguage-link-target"><span>Taqbaylit</span></a></li><li class="interlanguage-link interwiki-kbp mw-list-item"><a href="https://kbp.wikipedia.org/wiki/K%C9%9Bl%C9%9Bmk%C9%9Bl%C9%9Bm" title="Kɛlɛmkɛlɛm – Kabiye" lang="kbp" hreflang="kbp" data-title="Kɛlɛmkɛlɛm" data-language-autonym="Kabɩyɛ" data-language-local-name="Kabiye" class="interlanguage-link-target"><span>Kabɩyɛ</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%A1%D0%B5%D0%BA%D1%83%D0%BD%D0%B4" title="Секунд – 哈萨克语" lang="kk" hreflang="kk" data-title="Секунд" data-language-autonym="Қазақша" data-language-local-name="哈萨克语" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%B4%88_(%EC%8B%9C%EA%B0%84)" title="초 (시간) – 韩语" lang="ko" hreflang="ko" data-title="초 (시간)" data-language-autonym="한국어" data-language-local-name="韩语" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-krc mw-list-item"><a href="https://krc.wikipedia.org/wiki/%D0%A1%D0%B5%D0%BA%D1%83%D0%BD%D0%B4" title="Секунд – 卡拉恰伊巴尔卡尔语" lang="krc" hreflang="krc" data-title="Секунд" data-language-autonym="Къарачай-малкъар" data-language-local-name="卡拉恰伊巴尔卡尔语" class="interlanguage-link-target"><span>Къарачай-малкъар</span></a></li><li class="interlanguage-link interwiki-ks mw-list-item"><a href="https://ks.wikipedia.org/wiki/%D8%B3%D8%A0%DA%A9%D9%8E%D9%86%D9%9B%DA%88" title="سؠکَنٛڈ – 克什米尔语" lang="ks" hreflang="ks" data-title="سؠکَنٛڈ" data-language-autonym="कॉशुर / کٲشُر" data-language-local-name="克什米尔语" class="interlanguage-link-target"><span>कॉशुर / کٲشُر</span></a></li><li class="interlanguage-link interwiki-ku mw-list-item"><a href="https://ku.wikipedia.org/wiki/San%C3%AE" title="Sanî – 库尔德语" lang="ku" hreflang="ku" data-title="Sanî" data-language-autonym="Kurdî" data-language-local-name="库尔德语" class="interlanguage-link-target"><span>Kurdî</span></a></li><li class="interlanguage-link interwiki-kw mw-list-item"><a href="https://kw.wikipedia.org/wiki/Eylen" title="Eylen – 康沃尔语" lang="kw" hreflang="kw" data-title="Eylen" data-language-autonym="Kernowek" data-language-local-name="康沃尔语" class="interlanguage-link-target"><span>Kernowek</span></a></li><li class="interlanguage-link interwiki-ky mw-list-item"><a href="https://ky.wikipedia.org/wiki/%D0%A1%D0%B5%D0%BA%D1%83%D0%BD%D0%B4%D0%B0" title="Секунда – 柯尔克孜语" lang="ky" hreflang="ky" data-title="Секунда" data-language-autonym="Кыргызча" data-language-local-name="柯尔克孜语" class="interlanguage-link-target"><span>Кыргызча</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Secundum" title="Secundum – 拉丁语" lang="la" hreflang="la" data-title="Secundum" data-language-autonym="Latina" data-language-local-name="拉丁语" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lb mw-list-item"><a href="https://lb.wikipedia.org/wiki/Sekonn" title="Sekonn – 卢森堡语" lang="lb" hreflang="lb" data-title="Sekonn" data-language-autonym="Lëtzebuergesch" data-language-local-name="卢森堡语" class="interlanguage-link-target"><span>Lëtzebuergesch</span></a></li><li class="interlanguage-link interwiki-li mw-list-item"><a href="https://li.wikipedia.org/wiki/Sec%C3%B3nd" title="Secónd – 林堡语" lang="li" hreflang="li" data-title="Secónd" data-language-autonym="Limburgs" data-language-local-name="林堡语" class="interlanguage-link-target"><span>Limburgs</span></a></li><li class="interlanguage-link interwiki-lmo mw-list-item"><a href="https://lmo.wikipedia.org/wiki/Segond" title="Segond – 伦巴第语" lang="lmo" hreflang="lmo" data-title="Segond" data-language-autonym="Lombard" data-language-local-name="伦巴第语" class="interlanguage-link-target"><span>Lombard</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Sekund%C4%97" title="Sekundė – 立陶宛语" lang="lt" hreflang="lt" data-title="Sekundė" data-language-autonym="Lietuvių" data-language-local-name="立陶宛语" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Sekunde" title="Sekunde – 拉脱维亚语" lang="lv" hreflang="lv" data-title="Sekunde" data-language-autonym="Latviešu" data-language-local-name="拉脱维亚语" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-mai mw-list-item"><a href="https://mai.wikipedia.org/wiki/%E0%A4%B8%E0%A5%87%E0%A4%95%E0%A5%87%E0%A4%A3%E0%A5%8D%E0%A4%A1" title="सेकेण्ड – 迈蒂利语" lang="mai" hreflang="mai" data-title="सेकेण्ड" data-language-autonym="मैथिली" data-language-local-name="迈蒂利语" class="interlanguage-link-target"><span>मैथिली</span></a></li><li class="interlanguage-link interwiki-mg mw-list-item"><a href="https://mg.wikipedia.org/wiki/Segondra" title="Segondra – 马拉加斯语" lang="mg" hreflang="mg" data-title="Segondra" data-language-autonym="Malagasy" data-language-local-name="马拉加斯语" class="interlanguage-link-target"><span>Malagasy</span></a></li><li class="interlanguage-link interwiki-min mw-list-item"><a href="https://min.wikipedia.org/wiki/Datiak" title="Datiak – 米南佳保语" lang="min" hreflang="min" data-title="Datiak" data-language-autonym="Minangkabau" data-language-local-name="米南佳保语" class="interlanguage-link-target"><span>Minangkabau</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%A1%D0%B5%D0%BA%D1%83%D0%BD%D0%B4%D0%B0" title="Секунда – 马其顿语" lang="mk" hreflang="mk" data-title="Секунда" data-language-autonym="Македонски" data-language-local-name="马其顿语" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%9E%E0%B5%8A%E0%B4%9F%E0%B4%BF" title="ഞൊടി – 马拉雅拉姆语" lang="ml" hreflang="ml" data-title="ഞൊടി" data-language-autonym="മലയാളം" data-language-local-name="马拉雅拉姆语" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-mn mw-list-item"><a href="https://mn.wikipedia.org/wiki/%D0%A1%D0%B5%D0%BA%D1%83%D0%BD%D0%B4" title="Секунд – 蒙古语" lang="mn" hreflang="mn" data-title="Секунд" data-language-autonym="Монгол" data-language-local-name="蒙古语" class="interlanguage-link-target"><span>Монгол</span></a></li><li class="interlanguage-link interwiki-mr mw-list-item"><a href="https://mr.wikipedia.org/wiki/%E0%A4%B8%E0%A5%87%E0%A4%95%E0%A4%82%E0%A4%A6" title="सेकंद – 马拉地语" lang="mr" hreflang="mr" data-title="सेकंद" data-language-autonym="मराठी" data-language-local-name="马拉地语" class="interlanguage-link-target"><span>मराठी</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Saat" title="Saat – 马来语" lang="ms" hreflang="ms" data-title="Saat" data-language-autonym="Bahasa Melayu" data-language-local-name="马来语" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-my mw-list-item"><a href="https://my.wikipedia.org/wiki/%E1%80%85%E1%80%80%E1%80%B9%E1%80%80%E1%80%94%E1%80%B7%E1%80%BA" title="စက္ကန့် – 缅甸语" lang="my" hreflang="my" data-title="စက္ကန့်" data-language-autonym="မြန်မာဘာသာ" data-language-local-name="缅甸语" class="interlanguage-link-target"><span>မြန်မာဘာသာ</span></a></li><li class="interlanguage-link interwiki-nds mw-list-item"><a href="https://nds.wikipedia.org/wiki/Sekunn" title="Sekunn – 低地德语" lang="nds" hreflang="nds" data-title="Sekunn" data-language-autonym="Plattdüütsch" data-language-local-name="低地德语" class="interlanguage-link-target"><span>Plattdüütsch</span></a></li><li class="interlanguage-link interwiki-ne mw-list-item"><a href="https://ne.wikipedia.org/wiki/%E0%A4%B8%E0%A5%87%E0%A4%95%E0%A5%87%E0%A4%A8%E0%A5%8D%E0%A4%A1" title="सेकेन्ड – 尼泊尔语" lang="ne" hreflang="ne" data-title="सेकेन्ड" data-language-autonym="नेपाली" data-language-local-name="尼泊尔语" class="interlanguage-link-target"><span>नेपाली</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Seconde" title="Seconde – 荷兰语" lang="nl" hreflang="nl" data-title="Seconde" data-language-autonym="Nederlands" data-language-local-name="荷兰语" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Sekund" title="Sekund – 挪威尼诺斯克语" lang="nn" hreflang="nn" data-title="Sekund" data-language-autonym="Norsk nynorsk" data-language-local-name="挪威尼诺斯克语" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Sekund" title="Sekund – 书面挪威语" lang="nb" hreflang="nb" data-title="Sekund" data-language-autonym="Norsk bokmål" data-language-local-name="书面挪威语" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-nso mw-list-item"><a href="https://nso.wikipedia.org/wiki/Motsotswana" title="Motsotswana – 北索托语" lang="nso" hreflang="nso" data-title="Motsotswana" data-language-autonym="Sesotho sa Leboa" data-language-local-name="北索托语" class="interlanguage-link-target"><span>Sesotho sa Leboa</span></a></li><li class="interlanguage-link interwiki-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/Segonda" title="Segonda – 奥克语" lang="oc" hreflang="oc" data-title="Segonda" data-language-autonym="Occitan" data-language-local-name="奥克语" class="interlanguage-link-target"><span>Occitan</span></a></li><li class="interlanguage-link interwiki-om mw-list-item"><a href="https://om.wikipedia.org/wiki/Sekondii" title="Sekondii – 奥罗莫语" lang="om" hreflang="om" data-title="Sekondii" data-language-autonym="Oromoo" data-language-local-name="奥罗莫语" class="interlanguage-link-target"><span>Oromoo</span></a></li><li class="interlanguage-link interwiki-pa mw-list-item"><a href="https://pa.wikipedia.org/wiki/%E0%A8%B8%E0%A8%95%E0%A8%BF%E0%A9%B0%E0%A8%9F" title="ਸਕਿੰਟ – 旁遮普语" lang="pa" hreflang="pa" data-title="ਸਕਿੰਟ" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="旁遮普语" class="interlanguage-link-target"><span>ਪੰਜਾਬੀ</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Sekunda" title="Sekunda – 波兰语" lang="pl" hreflang="pl" data-title="Sekunda" data-language-autonym="Polski" data-language-local-name="波兰语" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pms mw-list-item"><a href="https://pms.wikipedia.org/wiki/Second" title="Second – 皮埃蒙特文" lang="pms" hreflang="pms" data-title="Second" data-language-autonym="Piemontèis" data-language-local-name="皮埃蒙特文" class="interlanguage-link-target"><span>Piemontèis</span></a></li><li class="interlanguage-link interwiki-pnb mw-list-item"><a href="https://pnb.wikipedia.org/wiki/%D8%B3%DA%A9%D9%86%D9%B9" title="سکنٹ – Western Punjabi" lang="pnb" hreflang="pnb" data-title="سکنٹ" data-language-autonym="پنجابی" data-language-local-name="Western Punjabi" class="interlanguage-link-target"><span>پنجابی</span></a></li><li class="interlanguage-link interwiki-ps mw-list-item"><a href="https://ps.wikipedia.org/wiki/%D8%AB%D8%A7%D9%86%D9%8A%D9%87" title="ثانيه – 普什图语" lang="ps" hreflang="ps" data-title="ثانيه" data-language-autonym="پښتو" data-language-local-name="普什图语" class="interlanguage-link-target"><span>پښتو</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Segundo" title="Segundo – 葡萄牙语" lang="pt" hreflang="pt" data-title="Segundo" data-language-autonym="Português" data-language-local-name="葡萄牙语" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-qu mw-list-item"><a href="https://qu.wikipedia.org/wiki/Sikunthu" title="Sikunthu – 克丘亚语" lang="qu" hreflang="qu" data-title="Sikunthu" data-language-autonym="Runa Simi" data-language-local-name="克丘亚语" class="interlanguage-link-target"><span>Runa Simi</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Secund%C4%83" title="Secundă – 罗马尼亚语" lang="ro" hreflang="ro" data-title="Secundă" data-language-autonym="Română" data-language-local-name="罗马尼亚语" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-roa-tara mw-list-item"><a href="https://roa-tara.wikipedia.org/wiki/Seconne" title="Seconne – Tarantino" lang="nap-x-tara" hreflang="nap-x-tara" data-title="Seconne" data-language-autonym="Tarandíne" data-language-local-name="Tarantino" class="interlanguage-link-target"><span>Tarandíne</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%A1%D0%B5%D0%BA%D1%83%D0%BD%D0%B4%D0%B0" title="Секунда – 俄语" lang="ru" hreflang="ru" data-title="Секунда" data-language-autonym="Русский" data-language-local-name="俄语" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-rue mw-list-item"><a href="https://rue.wikipedia.org/wiki/%D0%A1%D0%B5%D0%BA%D1%83%D0%BD%D0%B4%D0%B0" title="Секунда – 盧森尼亞文" lang="rue" hreflang="rue" data-title="Секунда" data-language-autonym="Русиньскый" data-language-local-name="盧森尼亞文" class="interlanguage-link-target"><span>Русиньскый</span></a></li><li class="interlanguage-link interwiki-sah mw-list-item"><a href="https://sah.wikipedia.org/wiki/%D0%A1%D3%A9%D0%BA%D2%AF%D2%AF%D0%BD%D0%B4%D1%8D" title="Сөкүүндэ – 萨哈语" lang="sah" hreflang="sah" data-title="Сөкүүндэ" data-language-autonym="Саха тыла" data-language-local-name="萨哈语" class="interlanguage-link-target"><span>Саха тыла</span></a></li><li class="interlanguage-link interwiki-sat mw-list-item"><a href="https://sat.wikipedia.org/wiki/%E1%B1%B4%E1%B1%A4%E1%B1%AF%E1%B1%A4%E1%B1%A1" title="ᱴᱤᱯᱤᱡ – 桑塔利语" lang="sat" hreflang="sat" data-title="ᱴᱤᱯᱤᱡ" data-language-autonym="ᱥᱟᱱᱛᱟᱲᱤ" data-language-local-name="桑塔利语" class="interlanguage-link-target"><span>ᱥᱟᱱᱛᱟᱲᱤ</span></a></li><li class="interlanguage-link interwiki-sc mw-list-item"><a href="https://sc.wikipedia.org/wiki/Segundu" title="Segundu – 萨丁语" lang="sc" hreflang="sc" data-title="Segundu" data-language-autonym="Sardu" data-language-local-name="萨丁语" class="interlanguage-link-target"><span>Sardu</span></a></li><li class="interlanguage-link interwiki-sco mw-list-item"><a href="https://sco.wikipedia.org/wiki/Seicont" title="Seicont – 苏格兰语" lang="sco" hreflang="sco" data-title="Seicont" data-language-autonym="Scots" data-language-local-name="苏格兰语" class="interlanguage-link-target"><span>Scots</span></a></li><li class="interlanguage-link interwiki-sd mw-list-item"><a href="https://sd.wikipedia.org/wiki/%D8%B3%D9%8A%DA%AA%D9%86%DA%8A" title="سيڪنڊ – 信德语" lang="sd" hreflang="sd" data-title="سيڪنڊ" data-language-autonym="سنڌي" data-language-local-name="信德语" class="interlanguage-link-target"><span>سنڌي</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Sekunda" title="Sekunda – 塞尔维亚-克罗地亚语" lang="sh" hreflang="sh" data-title="Sekunda" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="塞尔维亚-克罗地亚语" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-si mw-list-item"><a href="https://si.wikipedia.org/wiki/%E0%B6%AD%E0%B6%AD%E0%B7%8A%E0%B6%B4%E0%B6%BB%E0%B6%BA" title="තත්පරය – 僧伽罗语" lang="si" hreflang="si" data-title="තත්පරය" data-language-autonym="සිංහල" data-language-local-name="僧伽罗语" class="interlanguage-link-target"><span>සිංහල</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Second" title="Second – Simple English" lang="en-simple" hreflang="en-simple" data-title="Second" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Sekunda" title="Sekunda – 斯洛伐克语" lang="sk" hreflang="sk" data-title="Sekunda" data-language-autonym="Slovenčina" data-language-local-name="斯洛伐克语" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Sekunda" title="Sekunda – 斯洛文尼亚语" lang="sl" hreflang="sl" data-title="Sekunda" data-language-autonym="Slovenščina" data-language-local-name="斯洛文尼亚语" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sn mw-list-item"><a href="https://sn.wikipedia.org/wiki/Chepiri" title="Chepiri – 绍纳语" lang="sn" hreflang="sn" data-title="Chepiri" data-language-autonym="ChiShona" data-language-local-name="绍纳语" class="interlanguage-link-target"><span>ChiShona</span></a></li><li class="interlanguage-link interwiki-so mw-list-item"><a href="https://so.wikipedia.org/wiki/Ilbiriqsi" title="Ilbiriqsi – 索马里语" lang="so" hreflang="so" data-title="Ilbiriqsi" data-language-autonym="Soomaaliga" data-language-local-name="索马里语" class="interlanguage-link-target"><span>Soomaaliga</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Sekonda" title="Sekonda – 阿尔巴尼亚语" lang="sq" hreflang="sq" data-title="Sekonda" data-language-autonym="Shqip" data-language-local-name="阿尔巴尼亚语" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%A1%D0%B5%D0%BA%D1%83%D0%BD%D0%B4" title="Секунд – 塞尔维亚语" lang="sr" hreflang="sr" data-title="Секунд" data-language-autonym="Српски / srpski" data-language-local-name="塞尔维亚语" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-su mw-list-item"><a href="https://su.wikipedia.org/wiki/Detik" title="Detik – 巽他语" lang="su" hreflang="su" data-title="Detik" data-language-autonym="Sunda" data-language-local-name="巽他语" class="interlanguage-link-target"><span>Sunda</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Sekund" title="Sekund – 瑞典语" lang="sv" hreflang="sv" data-title="Sekund" data-language-autonym="Svenska" data-language-local-name="瑞典语" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-sw mw-list-item"><a href="https://sw.wikipedia.org/wiki/Sekunde" title="Sekunde – 斯瓦希里语" lang="sw" hreflang="sw" data-title="Sekunde" data-language-autonym="Kiswahili" data-language-local-name="斯瓦希里语" class="interlanguage-link-target"><span>Kiswahili</span></a></li><li class="interlanguage-link interwiki-szl mw-list-item"><a href="https://szl.wikipedia.org/wiki/Sek%C5%8Dnda" title="Sekōnda – 西里西亚语" lang="szl" hreflang="szl" data-title="Sekōnda" data-language-autonym="Ślůnski" data-language-local-name="西里西亚语" class="interlanguage-link-target"><span>Ślůnski</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%A8%E0%AF%8A%E0%AE%9F%E0%AE%BF_(%E0%AE%95%E0%AE%BE%E0%AE%B2_%E0%AE%85%E0%AE%B3%E0%AE%B5%E0%AF%81)" title="நொடி (கால அளவு) – 泰米尔语" lang="ta" hreflang="ta" data-title="நொடி (கால அளவு)" data-language-autonym="தமிழ்" data-language-local-name="泰米尔语" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-te mw-list-item"><a href="https://te.wikipedia.org/wiki/%E0%B0%B8%E0%B1%86%E0%B0%95%E0%B0%82%E0%B0%A1%E0%B1%81" title="సెకండు – 泰卢固语" lang="te" hreflang="te" data-title="సెకండు" data-language-autonym="తెలుగు" data-language-local-name="泰卢固语" class="interlanguage-link-target"><span>తెలుగు</span></a></li><li class="interlanguage-link interwiki-tg mw-list-item"><a href="https://tg.wikipedia.org/wiki/%D0%A1%D0%BE%D0%BD%D0%B8%D1%8F" title="Сония – 塔吉克语" lang="tg" hreflang="tg" data-title="Сония" data-language-autonym="Тоҷикӣ" data-language-local-name="塔吉克语" class="interlanguage-link-target"><span>Тоҷикӣ</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%A7%E0%B8%B4%E0%B8%99%E0%B8%B2%E0%B8%97%E0%B8%B5" title="วินาที – 泰语" lang="th" hreflang="th" data-title="วินาที" data-language-autonym="ไทย" data-language-local-name="泰语" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tl mw-list-item"><a href="https://tl.wikipedia.org/wiki/Segundo" title="Segundo – 他加禄语" lang="tl" hreflang="tl" data-title="Segundo" data-language-autonym="Tagalog" data-language-local-name="他加禄语" class="interlanguage-link-target"><span>Tagalog</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Saniye" title="Saniye – 土耳其语" lang="tr" hreflang="tr" data-title="Saniye" data-language-autonym="Türkçe" data-language-local-name="土耳其语" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-tt mw-list-item"><a href="https://tt.wikipedia.org/wiki/%D0%A1%D0%B5%D0%BA%D1%83%D0%BD%D0%B4" title="Секунд – 鞑靼语" lang="tt" hreflang="tt" data-title="Секунд" data-language-autonym="Татарча / tatarça" data-language-local-name="鞑靼语" class="interlanguage-link-target"><span>Татарча / tatarça</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%A1%D0%B5%D0%BA%D1%83%D0%BD%D0%B4%D0%B0" title="Секунда – 乌克兰语" lang="uk" hreflang="uk" data-title="Секунда" data-language-autonym="Українська" data-language-local-name="乌克兰语" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-ur mw-list-item"><a href="https://ur.wikipedia.org/wiki/%D8%AB%D8%A7%D9%86%DB%8C%DB%81" title="ثانیہ – 乌尔都语" lang="ur" hreflang="ur" data-title="ثانیہ" data-language-autonym="اردو" data-language-local-name="乌尔都语" class="interlanguage-link-target"><span>اردو</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Soniya" title="Soniya – 乌兹别克语" lang="uz" hreflang="uz" data-title="Soniya" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="乌兹别克语" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-vep mw-list-item"><a href="https://vep.wikipedia.org/wiki/Sekund" title="Sekund – 维普森语" lang="vep" hreflang="vep" data-title="Sekund" data-language-autonym="Vepsän kel’" data-language-local-name="维普森语" class="interlanguage-link-target"><span>Vepsän kel’</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Gi%C3%A2y" title="Giây – 越南语" lang="vi" hreflang="vi" data-title="Giây" data-language-autonym="Tiếng Việt" data-language-local-name="越南语" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-vls mw-list-item"><a href="https://vls.wikipedia.org/wiki/Seconde" title="Seconde – 西佛蘭德文" lang="vls" hreflang="vls" data-title="Seconde" data-language-autonym="West-Vlams" data-language-local-name="西佛蘭德文" class="interlanguage-link-target"><span>West-Vlams</span></a></li><li class="interlanguage-link interwiki-wa mw-list-item"><a href="https://wa.wikipedia.org/wiki/Sigonde" title="Sigonde – 瓦隆语" lang="wa" hreflang="wa" data-title="Sigonde" data-language-autonym="Walon" data-language-local-name="瓦隆语" class="interlanguage-link-target"><span>Walon</span></a></li><li class="interlanguage-link interwiki-war mw-list-item"><a href="https://war.wikipedia.org/wiki/Segundo" title="Segundo – 瓦瑞语" lang="war" hreflang="war" data-title="Segundo" data-language-autonym="Winaray" data-language-local-name="瓦瑞语" class="interlanguage-link-target"><span>Winaray</span></a></li><li class="interlanguage-link interwiki-wo mw-list-item"><a href="https://wo.wikipedia.org/wiki/Saa" title="Saa – 沃洛夫语" lang="wo" hreflang="wo" data-title="Saa" data-language-autonym="Wolof" data-language-local-name="沃洛夫语" class="interlanguage-link-target"><span>Wolof</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E7%A7%92" title="秒 – 吴语" lang="wuu" hreflang="wuu" data-title="秒" data-language-autonym="吴语" data-language-local-name="吴语" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-xmf mw-list-item"><a href="https://xmf.wikipedia.org/wiki/%E1%83%9B%E1%83%94%E1%83%A0%E1%83%A5%E1%83%90" title="მერქა – 明格列爾文" lang="xmf" hreflang="xmf" data-title="მერქა" data-language-autonym="მარგალური" data-language-local-name="明格列爾文" class="interlanguage-link-target"><span>მარგალური</span></a></li><li class="interlanguage-link interwiki-yi mw-list-item"><a href="https://yi.wikipedia.org/wiki/%D7%A1%D7%A2%D7%A7%D7%95%D7%A0%D7%93%D7%A2" title="סעקונדע – 意第绪语" lang="yi" hreflang="yi" data-title="סעקונדע" data-language-autonym="ייִדיש" data-language-local-name="意第绪语" class="interlanguage-link-target"><span>ייִדיש</span></a></li><li class="interlanguage-link interwiki-za mw-list-item"><a href="https://za.wikipedia.org/wiki/Miux" title="Miux – 壮语" lang="za" hreflang="za" data-title="Miux" data-language-autonym="Vahcuengh" data-language-local-name="壮语" class="interlanguage-link-target"><span>Vahcuengh</span></a></li><li class="interlanguage-link interwiki-zh-classical mw-list-item"><a href="https://zh-classical.wikipedia.org/wiki/%E7%A7%92" title="秒 – 文言文" lang="lzh" hreflang="lzh" data-title="秒" data-language-autonym="文言" data-language-local-name="文言文" class="interlanguage-link-target"><span>文言</span></a></li><li class="interlanguage-link interwiki-zh-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/Bi%C3%B3" title="Bió – 闽南语" lang="nan" hreflang="nan" data-title="Bió" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="闽南语" class="interlanguage-link-target"><span>閩南語 / Bân-lâm-gú</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E7%A7%92%E9%90%98" title="秒鐘 – 粤语" lang="yue" hreflang="yue" data-title="秒鐘" data-language-autonym="粵語" data-language-local-name="粤语" class="interlanguage-link-target"><span>粵語</span></a></li> </ul> <div 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div.NavHead:not(.notheme)[style]{background:transparent!important}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox" style="background:;"><tbody><tr><th colspan="2" class="infobox-above">秒</th></tr><tr><th scope="row" class="infobox-label" style=""><span class="nowrap"><a href="/wiki/%E8%AE%A1%E9%87%8F%E5%8D%95%E4%BD%8D%E5%88%B6" title="计量单位制">单位制</a></span></th><td class="infobox-data" style=""><a href="/wiki/%E5%9B%BD%E9%99%85%E5%8D%95%E4%BD%8D%E5%88%B6%E5%9F%BA%E6%9C%AC%E5%8D%95%E4%BD%8D" title="国际单位制基本单位">国际单位制基本单位</a></td></tr><tr><th scope="row" class="infobox-label" style=""><span class="nowrap">物理量名称</span></th><td class="infobox-data" style=""><a href="/wiki/%E6%99%82%E9%96%93" class="mw-redirect" title="時間">時間</a></td></tr><tr><th scope="row" class="infobox-label" style=""><span class="nowrap">符号</span></th><td class="infobox-data" style="">s </td></tr><tr><th colspan="2" class="infobox-header" style="">單位換算 </th></tr><tr class="nowrap"><td><b>1 s</b></td><td><b>相当于</b></td></tr><tr style="display:none"><th colspan="2"> </th></tr><tr><th scope="row" class="infobox-label" style=""><span class="nowrap">   </span> </th><td class="infobox-data" style=""><span class="nowrap">   </span>=1/60 <a href="/wiki/%E5%88%86%E9%90%98" class="mw-redirect" title="分鐘">分鐘</a></td></tr><tr><th colspan="2" class="infobox-header" style="">正式定義</th></tr><tr><th scope="row" class="infobox-label" style="">機構</th><td class="infobox-data" style=""><a href="/wiki/%E5%9C%8B%E9%9A%9B%E5%BA%A6%E9%87%8F%E8%A1%A1%E5%A7%94%E5%93%A1%E6%9C%83" title="國際度量衡委員會">國際度量衡委員會</a></td></tr><tr><th scope="row" class="infobox-label" style=""><span class="nowrap">制訂日期</span></th><td class="infobox-data" style="">2018年<a href="/wiki/%E5%9C%8B%E9%9A%9B%E5%BA%A6%E9%87%8F%E8%A1%A1%E5%A4%A7%E6%9C%83" title="國際度量衡大會">國際度量衡大會</a></td></tr><tr><th scope="row" class="infobox-label" style=""><span class="nowrap">生效日期</span></th><td class="infobox-data" style="">2019年5月20日</td></tr><tr><th scope="row" class="infobox-label" style="">定義</th><td class="infobox-data" style="">銫133原子在超精細結構和基態這兩個能階之間持續9,192,631,770次躍遷輻射之時間。</td></tr></tbody></table> <figure class="mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Flashingsecond.gif" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f5/Flashingsecond.gif/50px-Flashingsecond.gif" decoding="async" width="50" height="50" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f5/Flashingsecond.gif/75px-Flashingsecond.gif 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f5/Flashingsecond.gif/100px-Flashingsecond.gif 2x" data-file-width="288" data-file-height="288" /></a><figcaption>圖中的閃爍約一秒一次</figcaption></figure> <p><b>秒</b>是<a href="/wiki/%E5%9C%8B%E9%9A%9B%E5%96%AE%E4%BD%8D%E5%88%B6" class="mw-redirect" title="國際單位制">國際單位制</a>中<a href="/wiki/%E6%99%82%E9%96%93" class="mw-redirect" title="時間">時間</a>的<a href="/wiki/%E5%9B%BD%E9%99%85%E5%8D%95%E4%BD%8D%E5%88%B6%E5%9F%BA%E6%9C%AC%E5%8D%95%E4%BD%8D" title="国际单位制基本单位">基本單位</a><sup id="cite_ref-BIPM21_1-0" class="reference"><a href="#cite_note-BIPM21-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>，符號是<b>s</b>。有時也會借用英文缩写標示為sec<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>，惟sec於正式文書及學術上應避免使用（應直接使用<b>s</b>）。秒在英文裡的原始詞義是計算<a href="/wiki/%E5%B0%8F%E6%99%82" class="mw-redirect" title="小時">小時</a>的六十分之一（<a href="/wiki/%E5%88%86%E9%90%98" class="mw-redirect" title="分鐘">分鐘</a>）後，再計算六十分之一<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>。在西元1000至1960年之間，秒的定義是平均<a href="/wiki/%E5%A4%AA%E9%98%B3%E6%97%A5" title="太阳日">太陽日</a>的1/86,400（在一些天文及法律的定義中仍然適用）<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup>。在1960至1967年之間，定義為1960年地球自轉一周時間的1/86,400<sup id="cite_ref-USNO_5-0" class="reference"><a href="#cite_note-USNO-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup>，現在則是用<a href="/wiki/%E5%8E%9F%E5%AD%90" title="原子">原子</a>的特性來定義。秒也可以用機械<a href="/wiki/%E6%97%B6%E9%92%9F" class="mw-redirect" title="时钟">鐘</a>、電子鐘或原子鐘來計時。 </p><p><a href="/wiki/%E5%9C%8B%E9%9A%9B%E5%96%AE%E4%BD%8D%E5%88%B6%E8%A9%9E%E9%A0%AD" class="mw-redirect" title="國際單位制詞頭">國際單位制詞頭</a>經常與秒結合以做更細微的劃分，例如ms（毫秒，千分之一秒）、µs（微秒，百萬分之一秒）和ns（奈秒，十億分之一秒）。雖然國際單位制詞頭也可以用於擴增時間，例如ks（千秒）、Ms（百萬秒）和Gs（十億秒），但實際上很少這樣子使用，大家都還是習慣用60進位的分、時和24進位的日做為秒的擴充。 </p><p>秒不但是國際單位制中時間的基本單位，也是<a href="/wiki/%E5%85%AC%E5%88%86-%E5%85%8B-%E7%A7%92%E5%88%B6" class="mw-redirect" title="公分-克-秒制">公分-克-秒制</a>、<a href="/wiki/%E7%B1%B3-%E5%85%AC%E6%96%A4-%E7%A7%92%E5%88%B6" class="mw-redirect" title="米-公斤-秒制">米-公斤-秒制</a>、<a href="/wiki/%E7%B1%B3-%E5%85%AC%E5%99%B8-%E7%A7%92%E5%88%B6" class="mw-redirect" title="米-公噸-秒制">米-公噸-秒制</a>及<a href="/wiki/%E8%8B%B1%E5%88%B6%E5%96%AE%E4%BD%8D" class="mw-redirect" title="英制單位">英制單位</a>下的時間基本單位。 </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="世界公認的秒"><span id=".E4.B8.96.E7.95.8C.E5.85.AC.E8.AA.8D.E7.9A.84.E7.A7.92"></span>世界公認的秒</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E7%A7%92&action=edit&section=1" title="编辑章节：世界公認的秒"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>在現行國際單位制下，在1967年召開的第13屆國際度量衡大會對秒的定義是：<a href="/wiki/%E9%8A%AB" class="mw-redirect" title="銫">銫</a>133原子<a href="/wiki/%E5%9F%BA%E6%80%81" title="基态">基態</a>的兩個超精細<a href="/wiki/%E8%83%BD%E9%9A%8E" class="mw-redirect" title="能階">能階</a>間<a href="/wiki/%E8%BA%8D%E9%81%B7" class="mw-redirect mw-disambig" title="躍遷">躍遷</a>對應輻射的9,192,631,770個週期的持續時間。<sup id="cite_ref-USNO_5-1" class="reference"><a href="#cite_note-USNO-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup>這個定義提到的銫原子必須在<a href="/wiki/%E7%B5%95%E5%B0%8D%E9%9B%B6%E5%BA%A6" class="mw-redirect" title="絕對零度">絕對零度</a>時是靜止的，而且在地面上的環境是零<a href="/wiki/%E7%A3%81%E5%A0%B4" title="磁場">磁場</a>。<sup id="cite_ref-USNO_5-2" class="reference"><a href="#cite_note-USNO-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup>在這樣的情況下被定義的秒，與天文學上的<a href="/wiki/%E6%9B%86%E6%9B%B8%E6%99%82" title="曆書時">曆書時</a>所定義的秒是等效的。 </p><p>秒的國際標準符號可以參考<span class="ilh-all" data-orig-title="ISO 31-1" data-lang-code="en" data-lang-name="英语" data-foreign-title="ISO 31-1"><span class="ilh-page"><a href="/w/index.php?title=ISO_31-1&action=edit&redlink=1" class="new" title="ISO 31-1（页面不存在）">ISO 31-1</a></span><span class="noprint ilh-comment"><span class="ilh-paren">（</span><span class="ilh-lang">英语</span><span class="ilh-colon">：</span><span class="ilh-link"><a href="https://en.wikipedia.org/wiki/ISO_31-1" class="extiw" title="en:ISO 31-1"><span lang="en" dir="auto">ISO 31-1</span></a></span><span class="ilh-paren">）</span></span></span>。 </p><p>2019年，<a href="/wiki/%E5%9C%8B%E9%9A%9B%E5%BA%A6%E9%87%8F%E8%A1%A1%E5%A7%94%E5%93%A1%E6%9C%83" title="國際度量衡委員會">国际时间频率咨询委员会</a>重新讨论了“秒”的重新定义问题。 </p> <ul><li><b>新定義：</b>秒，符號為s，國際單位制時間單位。其定義是，將銫-133原子不受擾動的基態超精細能級躍遷頻率<style data-mw-deduplicate="TemplateStyles:r58896141">.mw-parser-output .serif{font-family:Times,serif}</style><span class="serif"><span class="texhtml">Δ<i>ν</i><sub>Cs</sub></span></span>的值固定為<span class="nowrap"><span style="display:none" class="sortkey">7009919263177000000♠</span>9<span style="margin-left:.25em;">192</span><span style="margin-left:.25em;">631</span><span style="margin-left:.25em;">770</span></span><a href="/wiki/%E8%B5%AB%E8%8C%B2" class="mw-redirect" title="赫茲">赫茲</a>，赫茲等於s<sup>−1</sup>。</li></ul> <p>秒和定義所用常數之關係如下： </p> <dl><dd>1 s = <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r58896141" /><span class="serif"><span class="texhtml"><style data-mw-deduplicate="TemplateStyles:r72900767">.mw-parser-output .sfrac{white-space:nowrap}.mw-parser-output .sfrac.tion,.mw-parser-output .sfrac .tion{display:inline-block;vertical-align:-0.5em;font-size:85%;text-align:center}.mw-parser-output .sfrac .num,.mw-parser-output .sfrac .den{display:block;line-height:1em;margin:0 0.1em}.mw-parser-output .sfrac .den{border-top:1px solid}.mw-parser-output .sr-only{border:0;clip:rect(0,0,0,0);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px}</style><span role="math" class="sfrac tion"><span class="num"><span class="nowrap"><span style="display:none" class="sortkey">7009919263177000000♠</span>9<span style="margin-left:.25em;">192</span><span style="margin-left:.25em;">631</span><span style="margin-left:.25em;">770</span></span></span><span class="sr-only">/</span><span class="den">Δ<i>ν</i><sub>Cs</sub></span></span></span></span><sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Brochure9_2019_7-0" class="reference"><a href="#cite_note-Brochure9_2019-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup></dd></dl> <div class="mw-heading mw-heading2"><h2 id="與其他時間單位的關係"><span id=".E8.88.87.E5.85.B6.E4.BB.96.E6.99.82.E9.96.93.E5.96.AE.E4.BD.8D.E7.9A.84.E9.97.9C.E4.BF.82"></span>與其他時間單位的關係</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E7%A7%92&action=edit&section=2" title="编辑章节：與其他時間單位的關係"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>1 國際秒相當於： </p> <ul><li>1/60 分</li> <li>1/3,600 <a href="/wiki/%E5%B0%8F%E6%97%B6" title="小时">時</a></li> <li>1/86,400 <a href="/wiki/%E6%97%A5" title="日">日</a> （<a href="/wiki/%E5%9C%8B%E9%9A%9B%E5%A4%A9%E6%96%87%E8%81%AF%E5%90%88%E6%9C%83" class="mw-redirect" title="國際天文聯合會">國際天文聯合會</a>的時間單位）</li> <li>1/31,557,600 <a href="/wiki/%E5%84%92%E7%95%A5%E5%B9%B4" title="儒略年">儒略年</a>（<a href="/wiki/%E5%9C%8B%E9%9A%9B%E5%A4%A9%E6%96%87%E8%81%AF%E5%90%88%E6%9C%83" class="mw-redirect" title="國際天文聯合會">國際天文聯合會</a>的時間單位）</li></ul> <div class="mw-heading mw-heading2"><h2 id="歷史的起源"><span id=".E6.AD.B7.E5.8F.B2.E7.9A.84.E8.B5.B7.E6.BA.90"></span>歷史的起源</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E7%A7%92&action=edit&section=3" title="编辑章节：歷史的起源"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="在機械鐘錶之前"><span id=".E5.9C.A8.E6.A9.9F.E6.A2.B0.E9.90.98.E9.8C.B6.E4.B9.8B.E5.89.8D"></span>在機械鐘錶之前</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E7%A7%92&action=edit&section=4" title="编辑章节：在機械鐘錶之前"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>本來，時被分割為60分，分又被分割為60秒。在有些語系中，像是波蘭語（<i>tercja</i>）和阿拉伯語（ثالثة），<b>秒</b>也以60進位制被再細分，但在現代，都是以十進位法來細分小數點以下的時間。 </p><p><a href="/wiki/%E5%85%AD%E5%8D%81%E9%80%B2%E5%88%B6" title="六十進制">六十進位制</a>來自<a href="/wiki/%E5%B7%B4%E6%AF%94%E5%80%AB" class="mw-redirect" title="巴比倫">巴比倫</a>，他們以六十這個因素做為計算數量的單位。但是巴比倫人並沒有將<a href="/wiki/%E5%B0%8F%E6%97%B6" title="小时">時</a>分割為60分，而是<a href="/wiki/%E5%8F%A4%E5%9F%83%E5%8F%8A" title="古埃及">古埃及</a>將一<a href="/wiki/%E6%97%A5" title="日">日</a>分為12時的白天和12時的夜晚，他們也這樣子來區分四季。<a href="/wiki/%E5%8F%A4%E5%B8%8C%E8%87%98" class="mw-redirect" title="古希臘">古希臘</a>天文學家，包括<a href="/wiki/%E5%96%9C%E5%B8%95%E6%81%B0%E6%96%AF" class="mw-redirect" title="喜帕恰斯">希巴谷</a>和<a href="/wiki/%E6%89%98%E5%8B%92%E5%AF%86" class="mw-redirect" title="托勒密">托勒密</a>，定義<a href="/wiki/%E5%A4%AA%E9%98%B3%E6%97%A5" title="太阳日">太陽日</a>的24分之一為<a href="/wiki/%E5%B0%8F%E6%97%B6" title="小时">時</a>。以六十進位細分時，使得秒是一太陽日的86,400分之一。古希臘的時間週期，像是平<a href="/wiki/%E6%9C%94%E6%9C%9B%E6%9C%88" title="朔望月">朔望月</a>定義得非常精確，因為他們不是觀察單一的朔望月，而是以相距數百年的<a href="/wiki/%E6%97%A5%E9%A3%9F" title="日食">食</a>來測量朔望月的平均長度（日數）。 </p> <div class="mw-heading mw-heading3"><h3 id="利用機械鐘錶計時"><span id=".E5.88.A9.E7.94.A8.E6.A9.9F.E6.A2.B0.E9.90.98.E9.8C.B6.E8.A8.88.E6.99.82"></span>利用機械鐘錶計時</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E7%A7%92&action=edit&section=5" title="编辑章节：利用機械鐘錶計時"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>最早可以顯示秒的時鐘出現在十六世紀的後半。最早用發條驅動，有秒針的鐘是一個沒有刻度，上面有<a href="/wiki/%E5%A5%A5%E8%8F%B2%E6%96%AF" class="mw-redirect" title="奥菲斯">奧菲斯</a>的鐘，是Fremersdorf收藏的一部份，年代約在1560年至1570年之間<sup id="cite_ref-Landes_8-0" class="reference"><a href="#cite_note-Landes-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup><sup class="reference" style="white-space:nowrap;">:417–418</sup><sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup>。在1550至1575年之間，<span class="ilh-all" data-orig-title="塔居丁·穆罕默德·伊本·马鲁夫" data-lang-code="en" data-lang-name="英语" data-foreign-title="Taqi al-Din Muhammad ibn Ma'ruf"><span class="ilh-page"><a href="/w/index.php?title=%E5%A1%94%E5%B1%85%E4%B8%81%C2%B7%E7%A9%86%E7%BD%95%E9%BB%98%E5%BE%B7%C2%B7%E4%BC%8A%E6%9C%AC%C2%B7%E9%A9%AC%E9%B2%81%E5%A4%AB&action=edit&redlink=1" class="new" title="塔居丁·穆罕默德·伊本·马鲁夫（页面不存在）">塔居丁·穆罕默德·伊本·马鲁夫</a></span><span class="noprint ilh-comment"><span class="ilh-paren">（</span><span class="ilh-lang">英语</span><span class="ilh-colon">：</span><span class="ilh-link"><a href="https://en.wikipedia.org/wiki/Taqi_al-Din_Muhammad_ibn_Ma%27ruf" class="extiw" title="en:Taqi al-Din Muhammad ibn Ma'ruf"><span lang="en" dir="auto">Taqi al-Din Muhammad ibn Ma'ruf</span></a></span><span class="ilh-paren">）</span></span></span>作了一個鐘，每1/5分就有一個刻度<sup id="cite_ref-Selin1997_10-0" class="reference"><a href="#cite_note-Selin1997-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup>。1579年時，Jost Bürgi為<span class="ilh-all" data-orig-title="黑森-卡塞尔之威廉四世" data-lang-code="en" data-lang-name="英语" data-foreign-title="William IV, Landgrave of Hesse-Kassel"><span class="ilh-page"><a href="/w/index.php?title=%E9%BB%91%E6%A3%AE-%E5%8D%A1%E5%A1%9E%E5%B0%94%E4%B9%8B%E5%A8%81%E5%BB%89%E5%9B%9B%E4%B8%96&action=edit&redlink=1" class="new" title="黑森-卡塞尔之威廉四世（页面不存在）">黑森-卡塞尔之威廉四世</a></span><span class="noprint ilh-comment"><span class="ilh-paren">（</span><span class="ilh-lang">英语</span><span class="ilh-colon">：</span><span class="ilh-link"><a href="https://en.wikipedia.org/wiki/William_IV,_Landgrave_of_Hesse-Kassel" class="extiw" title="en:William IV, Landgrave of Hesse-Kassel"><span lang="en" dir="auto">William IV, Landgrave of Hesse-Kassel</span></a></span><span class="ilh-paren">）</span></span></span>作了一個鐘，上面有秒的刻度<sup id="cite_ref-Landes_8-1" class="reference"><a href="#cite_note-Landes-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup><sup class="reference" style="white-space:nowrap;">:105</sup>。1581年時<a href="/wiki/%E7%AC%AC%E8%B0%B7%C2%B7%E5%B8%83%E6%8B%89%E8%B5%AB" class="mw-redirect" title="第谷·布拉赫">第谷·布拉赫</a>在他的天文台中重新設計一個時鐘，可以顯示分及秒，但秒的計時不夠精確。1587年時第谷·布拉赫抱怨他的四個鐘差了正負四秒<sup id="cite_ref-Landes_8-2" class="reference"><a href="#cite_note-Landes-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup><sup class="reference" style="white-space:nowrap;">:104</sup>。 </p><p><a href="/wiki/%E6%91%86%E9%92%9F" title="摆钟">擺鐘</a>的出現使得人們首次可以精確的計時到秒。<a href="/wiki/%E9%A6%AC%E8%98%AD%C2%B7%E6%A2%85%E6%A3%AE" class="mw-redirect" title="馬蘭·梅森">馬蘭·梅森</a>在1644年計算長度39.1英吋（(0.994 m）的單擺在<a href="/wiki/%E6%A8%99%E6%BA%96%E9%87%8D%E5%8A%9B" title="標準重力">標準重力</a>下週期為2秒，單擺從最低點擺動，一秒後會回到原點，因此可以精準的計時到秒。 </p><p>秒擺的擺長在1660年被<a href="/wiki/%E5%80%AB%E6%95%A6%E7%9A%87%E5%AE%B6%E5%AD%B8%E6%9C%83" class="mw-redirect" title="倫敦皇家學會">倫敦皇家學會</a>提出作為長度的單位，在地球表面，擺長約一米的單擺，一次擺動或是半週期（沒有反複的一次擺動）的時間大約是一秒。 <sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup>。<a href="/wiki/%E6%91%86%E9%92%9F" title="摆钟">擺鐘</a>的發明可以計算平時（相對於日晷所顯示的視時），使得秒成為可測量的時間單位。 </p> <div class="mw-heading mw-heading3"><h3 id="現在的量測"><span id=".E7.8F.BE.E5.9C.A8.E7.9A.84.E9.87.8F.E6.B8.AC"></span>現在的量測</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E7%A7%92&action=edit&section=6" title="编辑章节：現在的量測"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>「秒」這個時間單位的英文second在16世紀末出現在英文中，約比精確測量到秒的時間要晚一百年。用拉丁文寫作的人，包括<a href="/wiki/%E7%BD%97%E5%90%89%E5%B0%94%C2%B7%E5%9F%B9%E6%A0%B9" title="罗吉尔·培根">罗吉尔·培根</a>、<a href="/wiki/%E7%AC%AC%E8%B0%B7%C2%B7%E5%B8%83%E6%8B%89%E8%B5%AB" class="mw-redirect" title="第谷·布拉赫">第谷·布拉赫</a>及<a href="/wiki/%E7%B4%84%E7%BF%B0%E5%85%A7%E6%96%AF%C2%B7%E5%85%8B%E5%8D%9C%E5%8B%92" class="mw-redirect" title="約翰內斯·克卜勒">約翰內斯·克卜勒</a>等科學家仍使用拉丁文的secunda，意思和1200年時的意思相同。 </p><p>1832年時<a href="/wiki/%E5%8D%A1%E7%88%BE%C2%B7%E5%BC%97%E9%87%8C%E5%BE%B7%E9%87%8C%E5%B8%8C%C2%B7%E9%AB%98%E6%96%AF" title="卡爾·弗里德里希·高斯">高斯</a>提議用秒作為<a href="/wiki/%E5%8E%98%E7%B1%B3-%E5%85%8B-%E7%A7%92%E5%88%B6" title="厘米-克-秒制">厘米-克-秒制</a>的時間單位。<a href="/wiki/%E8%8B%B1%E5%9C%8B%E7%A7%91%E5%AD%B8%E4%BF%83%E9%80%B2%E5%8D%94%E6%9C%83" class="mw-redirect" title="英國科學促進協會">英國科學促進協會</a>（BAAS）在1862年表示「所有科學界的人都同意用平均太陽日計算的秒為時間單位。」<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup>。BAAS在1874年正式的提出<a href="/wiki/%E5%85%AC%E5%88%86-%E5%85%8B-%E7%A7%92%E5%88%B6" class="mw-redirect" title="公分-克-秒制">公分-克-秒制</a>，不過在70年後被<a href="/wiki/%E7%B1%B3-%E5%85%AC%E5%99%B8-%E7%A7%92%E5%88%B6" class="mw-redirect" title="米-公噸-秒制">米-公噸-秒制</a>取代。公分-克-秒制及米-公噸-秒制都以秒為時間單位，定義為平均太陽日的1/86,400。 </p><p>在1956年，秒被以特定<a href="/wiki/%E6%9B%86%E5%85%83" title="曆元">曆元</a>下的地球公轉週期來定義，因為當時天文學家知道地球在自轉軸上的自轉不夠穩定，不足以作為時間的標準。<a href="/wiki/%E7%B4%90%E5%BA%B7%E7%9A%84%E5%A4%AA%E9%99%BD%E8%A1%A8" title="紐康的太陽表">紐康的太陽表</a>以1900年的曆元描述太陽的運動，所依據的是1750年至1892年的觀測。在1956年，<sup id="cite_ref-USNO_5-3" class="reference"><a href="#cite_note-USNO-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup>秒的定義如下： </p> <dl><dd>自<a href="/wiki/%E6%9B%86%E6%9B%B8%E6%99%82" title="曆書時">曆書時</a>1900年1月0日12時起算的回歸年的31,556,925.9747分之一為一秒<sup id="cite_ref-USNO_5-4" class="reference"><a href="#cite_note-USNO-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup></dd></dl> <p>在1960年，這個定義由第十一次的國際度量衡會議通過。雖然這個定義中的回歸年的長度不能進行實測，但可以經由線性關係的平回歸年的算式推導，因此，有一個具體的瞬時回歸年長度可以參考。因為秒是用於大半個20世紀太陽和月球的<a href="/wiki/%E6%98%9F%E6%9B%86%E8%A1%A8" title="星曆表">星曆表</a>中的獨立時間變數（紐康的太陽表從1900年使用至1983年，<span class="ilh-all" data-orig-title="歐內斯特·威廉·布朗" data-lang-code="en" data-lang-name="英语" data-foreign-title="Ernest William Brown"><span class="ilh-page"><a href="/w/index.php?title=%E6%AD%90%E5%85%A7%E6%96%AF%E7%89%B9%C2%B7%E5%A8%81%E5%BB%89%C2%B7%E5%B8%83%E6%9C%97&action=edit&redlink=1" class="new" title="歐內斯特·威廉·布朗（页面不存在）">布朗</a></span><span class="noprint ilh-comment"><span class="ilh-paren">（</span><span class="ilh-lang">英语</span><span class="ilh-colon">：</span><span class="ilh-link"><a href="https://en.wikipedia.org/wiki/Ernest_William_Brown" class="extiw" title="en:Ernest William Brown"><span lang="en" dir="auto">Ernest William Brown</span></a></span><span class="ilh-paren">）</span></span></span>的月球表從1920年使用至1983年），因此這個秒被稱為<a href="/wiki/%E6%9B%86%E6%9B%B8%E6%99%82" title="曆書時">曆書秒</a>。<sup id="cite_ref-USNO_5-5" class="reference"><a href="#cite_note-USNO-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p><p>隨著<a href="/wiki/%E5%8E%9F%E5%AD%90%E9%90%98" title="原子鐘">原子鐘</a>的發展，秒的定義決定改採用原子時做為新的定義基準，而不再採用地球公轉太陽定義的曆書秒。 </p><p>經過多年的努力，<a href="/wiki/%E8%8B%B1%E5%9B%BD%E5%9B%BD%E5%AE%B6%E7%89%A9%E7%90%86%E5%AE%9E%E9%AA%8C%E5%AE%A4" title="英国国家物理实验室">英國國家物理實驗室</a>的<span class="ilh-all" data-orig-title="路易斯·埃森" data-lang-code="en" data-lang-name="英语" data-foreign-title="Louis Essen"><span class="ilh-page"><a href="/w/index.php?title=%E8%B7%AF%E6%98%93%E6%96%AF%C2%B7%E5%9F%83%E6%A3%AE&action=edit&redlink=1" class="new" title="路易斯·埃森（页面不存在）">路易斯·埃森</a></span><span class="noprint ilh-comment"><span class="ilh-paren">（</span><span class="ilh-lang">英语</span><span class="ilh-colon">：</span><span class="ilh-link"><a href="https://en.wikipedia.org/wiki/Louis_Essen" class="extiw" title="en:Louis Essen"><span lang="en" dir="auto">Louis Essen</span></a></span><span class="ilh-paren">）</span></span></span>和<a href="/wiki/%E7%BE%8E%E5%9C%8B%E6%B5%B7%E8%BB%8D%E5%A4%A9%E6%96%87%E5%8F%B0" class="mw-redirect" title="美國海軍天文台">美國海軍天文台</a>的<span class="ilh-all" data-orig-title="威廉·馬克維茲" data-lang-code="en" data-lang-name="英语" data-foreign-title="William Markowitz"><span class="ilh-page"><a href="/w/index.php?title=%E5%A8%81%E5%BB%89%C2%B7%E9%A6%AC%E5%85%8B%E7%B6%AD%E8%8C%B2&action=edit&redlink=1" class="new" title="威廉·馬克維茲（页面不存在）">威廉·馬克維茲</a></span><span class="noprint ilh-comment"><span class="ilh-paren">（</span><span class="ilh-lang">英语</span><span class="ilh-colon">：</span><span class="ilh-link"><a href="https://en.wikipedia.org/wiki/William_Markowitz" class="extiw" title="en:William Markowitz"><span lang="en" dir="auto">William Markowitz</span></a></span><span class="ilh-paren">）</span></span></span>測量出<a href="/wiki/%E9%8A%AB" class="mw-redirect" title="銫">銫</a>原子的超精細躍遷週期和曆書秒的關係。<sup id="cite_ref-USNO_5-6" class="reference"><a href="#cite_note-USNO-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup>使用過去普通的測量方法，接收來自<a href="/wiki/%E6%97%A0%E7%BA%BF%E7%94%B5%E5%8F%B0" class="mw-redirect" title="无线电台">無線電台</a>、<a href="/w/index.php?title=WWV&action=edit&redlink=1" class="new" title="WWV（页面不存在）">WWV</a>的訊號，<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup>再使用一個原子鐘來測量時間，他們確定了<a href="/wiki/%E6%9C%88%E7%90%83" title="月球">月球</a>相對於地球的軌道運動，也推斷出太陽表面可能有相對於地球的運動。結果，在1967年的第13屆國際度量衡會議上決定以<a href="/wiki/%E5%8E%9F%E5%AD%90%E6%97%B6" class="mw-redirect" title="原子时">原子時</a>定義的秒作為時間的國際標準單位： </p> <dl><dd><a href="/wiki/%E9%8A%AB" class="mw-redirect" title="銫">銫</a>133原子<a href="/wiki/%E5%9F%BA%E6%80%81" title="基态">基態</a>的兩個超精細<a href="/wiki/%E8%83%BD%E9%9A%8E" class="mw-redirect" title="能階">能階</a>間<a href="/wiki/%E8%BA%8D%E9%81%B7" class="mw-redirect mw-disambig" title="躍遷">躍遷</a>對應輻射的9,192,631,770個週期的持續時間。<sup id="cite_ref-USNO_5-7" class="reference"><a href="#cite_note-USNO-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup></dd></dl> <p>在70年代认识到<a href="/wiki/%E5%BC%95%E5%8A%9B%E6%99%82%E9%96%93%E8%86%A8%E8%84%B9" title="引力時間膨脹">引力時間膨脹</a>會導致在不同<a href="/wiki/%E9%AB%98%E5%BA%A6" title="高度">高度</a>的原子鐘有不同的秒，因此每個原子鐘都必須改正為在<a href="/wiki/%E6%B5%B7%E5%B9%B3%E9%9D%A2" title="海平面">平均海平面</a>的高度，以取得一致的秒（大地水平面的自轉約改變×10<sup>−10</sup>的秒長，在1977年開始修正並且在1980年已經制度化了。）。用相對論的術語來說，秒被定義成在轉動的大地水平面上<a href="/wiki/%E5%8E%9F%E6%99%82" title="原時">原時</a>。<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> </p><p>在1977年，在<a href="/wiki/%E5%9C%8B%E9%9A%9B%E5%BA%A6%E9%87%8F%E8%A1%A1%E5%B1%80" title="國際度量衡局">BIPM</a>的會議中又重新定義，加進了新的陳述： </p> <dl><dd>銫原子在 0 <a href="/wiki/%E7%86%B1%E5%8A%9B%E5%AD%B8%E6%BA%AB%E6%A8%99" class="mw-redirect" title="熱力學溫標">K</a> 下是靜止不動的。（<i>This definition refers to a caesium atom at rest at a temperature of 0 K. </i>）</dd></dl> <p>修正過的定義似乎暗示理想的原子鐘將只有靜止的一個銫原子發射出單一的頻率。在實務上，無論如何，這個定義意味着在那些原子鐘之內的運作和外推的數值，秒的高精密度應該如上所述的考量到周圍溫度的補償（<a href="/wiki/%E9%BB%91%E4%BD%93%E8%BE%90%E5%B0%84" title="黑体辐射">黑體輻射</a>）。 </p> <div class="mw-heading mw-heading2"><h2 id="秒的各級單位"><span id=".E7.A7.92.E7.9A.84.E5.90.84.E7.B4.9A.E5.96.AE.E4.BD.8D"></span>秒的各級單位</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E7%A7%92&action=edit&section=7" title="编辑章节：秒的各級單位"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a href="/wiki/%E5%9C%8B%E9%9A%9B%E5%96%AE%E4%BD%8D%E5%88%B6" class="mw-redirect" title="國際單位制">國際單位制</a>的前置詞可以放在秒的前面，表示比秒要短的時間，但很少用此方式表示比一秒要長的時間（<span class="ilh-all" data-orig-title="公制時間" data-lang-code="en" data-lang-name="英语" data-foreign-title="Metric time"><span class="ilh-page"><a href="/w/index.php?title=%E5%85%AC%E5%88%B6%E6%99%82%E9%96%93&action=edit&redlink=1" class="new" title="公制時間（页面不存在）">公制時間</a></span><span class="noprint ilh-comment"><span class="ilh-paren">（</span><span class="ilh-lang">英语</span><span class="ilh-colon">：</span><span class="ilh-link"><a href="https://en.wikipedia.org/wiki/Metric_time" class="extiw" title="en:Metric time"><span lang="en" dir="auto">Metric time</span></a></span><span class="ilh-paren">）</span></span></span>）。比一秒要長的時間一般會用非國際單位制的單位，如<a href="/wiki/%E5%88%86%E9%90%98" class="mw-redirect" title="分鐘">分鐘</a>、<a href="/wiki/%E5%B0%8F%E6%99%82" class="mw-redirect" title="小時">小時</a>、<a href="/wiki/%E6%97%A5" title="日">日</a>、<a href="/wiki/%E5%84%92%E7%95%A5%E5%B9%B4" title="儒略年">儒略年</a>、世紀或千年等單位表示。 </p> <div style="float:center; margin-left: 1em;"> <table class="wikitable" style="text-align:center; margin:0 auto;"> <caption>秒（s）的SI倍数 </caption> <tbody><tr> <th colspan="3">分数 </th> <td rowspan="14"> </td> <th colspan="3">倍数 </th></tr> <tr style="background:#d4d4d4;"> <th>值 </th> <th>符号 </th> <th>名稱 </th> <th>值 </th> <th>符号 </th> <th>名稱 </th></tr> <tr> <td>10<sup>−1</sup> s </td> <td>ds </td> <td>分秒 </td> <td>10<sup>1</sup> s </td> <td>das </td> <td>十秒 </td></tr> <tr> <td>10<sup>−2</sup> s </td> <td>cs </td> <td>厘秒 </td> <td>10<sup>2</sup> s </td> <td>hs </td> <td>百秒 </td></tr> <tr> <td>10<sup>−3</sup> s </td> <td><b>ms</b> </td> <td><b>毫秒</b> </td> <td>10<sup>3</sup> s </td> <td>ks </td> <td>千秒 </td></tr> <tr> <td>10<sup>−6</sup> s </td> <td><b>µs</b> </td> <td><b>微秒</b> </td> <td>10<sup>6</sup> s </td> <td>Ms </td> <td>兆秒 </td></tr> <tr> <td>10<sup>−9</sup> s </td> <td><b>ns</b> </td> <td><b>纳秒</b> </td> <td>10<sup>9</sup> s </td> <td>Gs </td> <td>吉秒 </td></tr> <tr> <td>10<sup>−12</sup> s </td> <td>ps </td> <td>皮秒 </td> <td>10<sup>12</sup> s </td> <td>Ts </td> <td>太秒 </td></tr> <tr> <td>10<sup>−15</sup> s </td> <td>fs </td> <td>飛秒 </td> <td>10<sup>15</sup> s </td> <td>Ps </td> <td>拍秒 </td></tr> <tr> <td>10<sup>−18</sup> s </td> <td>as </td> <td>阿秒 </td> <td>10<sup>18</sup> s </td> <td>Es </td> <td>艾秒 </td></tr> <tr> <td>10<sup>−21</sup> s </td> <td>zs </td> <td>仄秒 </td> <td>10<sup>21</sup> s </td> <td>Zs </td> <td>泽秒 </td></tr> <tr> <td>10<sup>−24</sup> s </td> <td>ys </td> <td>幺秒 </td> <td>10<sup>24</sup> s </td> <td>Ys </td> <td>尧秒 </td></tr> <tr> <td>10<sup>−27</sup> s </td> <td>rs </td> <td>柔秒 </td> <td>10<sup>27</sup> s </td> <td>Rs </td> <td>容秒 </td></tr> <tr> <td>10<sup>−30</sup> s </td> <td>qs </td> <td>亏秒 </td> <td>10<sup>30</sup> s </td> <td>Qs </td> <td>昆秒 </td></tr> <tr> <td colspan="7">常用單位以粗體表示 </td></tr></tbody></table> </div> <div class="mw-heading mw-heading2"><h2 id="其他的定義方式"><span id=".E5.85.B6.E4.BB.96.E7.9A.84.E5.AE.9A.E7.BE.A9.E6.96.B9.E5.BC.8F"></span>其他的定義方式</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E7%A7%92&action=edit&section=8" title="编辑章节：其他的定義方式"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>有時需要用其他和國際單位制不同的定義方法來定義秒。像<a href="/wiki/%E5%9C%8B%E9%9A%9B%E5%A4%A9%E6%96%87%E8%81%AF%E5%90%88%E6%9C%83" class="mw-redirect" title="國際天文聯合會">國際天文聯合會</a>定義<a href="/wiki/%E4%B8%96%E7%95%8C%E6%97%B6" title="世界时">世界時</a>的UT0、UT1及UT2系統是以地球自轉為基準得到的時間尺度，就是這样的系統。McCarthy和Seidelmann沒有說明SI制的秒是世界上時間計算的法定標準，他們只說「在這些年來UTC或是成為許多國家法定時間的基礎，或是成為事實上的常用時間基準。」<sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="汉字“秒”的古义"><span id=".E6.B1.89.E5.AD.97.E2.80.9C.E7.A7.92.E2.80.9D.E7.9A.84.E5.8F.A4.E4.B9.89"></span>汉字“秒”的古义</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E7%A7%92&action=edit&section=9" title="编辑章节：汉字“秒”的古义"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>汉字<b>秒</b>，在古代指的是10<sup>-4</sup>，比如在《<a href="/wiki/%E9%9A%8B%E4%B9%A6" title="隋书">隋书</a>·律历志》中，记载：宋末，南徐州从事史<a href="/wiki/%E7%A5%96%E5%86%B2%E4%B9%8B" title="祖冲之">祖冲之</a>，更开密法，以圆径一亿为一丈，圆周盈数三丈一尺四寸一分五厘九毫二<b>秒</b>七忽，朒数三丈一尺四寸一分五厘九毫二<b>秒</b>六忽，正数在盈朒二限之间。密率，圆径一百一十三，圆周三百五十五。约率，圆径七，周二十二。 </p> <div class="mw-heading mw-heading2"><h2 id="參見"><span id=".E5.8F.83.E8.A6.8B"></span>參見</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E7%A7%92&action=edit&section=10" title="编辑章节：參見"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r79074265">.mw-parser-output .div-col{margin-top:0.3em;column-width:30em}.mw-parser-output .div-col-small{font-size:90%}.mw-parser-output .div-col-rules{column-rule:1px solid #aaa}.mw-parser-output .div-col dl,.mw-parser-output .div-col ol,.mw-parser-output .div-col ul{margin-top:0}.mw-parser-output .div-col li,.mw-parser-output .div-col dd{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style><div class="div-col"> <ul><li><a href="/wiki/%E5%9B%BD%E9%99%85%E5%8D%95%E4%BD%8D%E5%88%B6" title="国际单位制">国际单位制</a></li> <li><a href="/wiki/%E6%97%B6%E9%97%B4%E5%8D%95%E4%BD%8D" title="时间单位">时间单位</a></li> <li><a href="/wiki/%E6%97%B6%E9%97%B4%E9%95%BF%E5%BA%A6%E6%AF%94%E8%BE%83" class="mw-redirect" title="时间长度比较">时间长度比较</a></li> <li><a href="/wiki/%E5%B0%8F%E6%97%B6" title="小时">小时</a></li> <li><a href="/wiki/%E5%88%86_(%E6%97%B6%E9%97%B4)" class="mw-redirect" title="分 (时间)">分钟</a></li> <li><a href="/wiki/%E6%95%B0%E9%87%8F%E7%BA%A7_(%E6%97%B6%E9%97%B4)" title="数量级 (时间)">数量级 (时间)</a></li> <li><a href="/wiki/%E5%8D%95%E4%BD%8D%E8%BD%AC%E6%8D%A2" class="mw-redirect" title="单位转换">单位转换</a></li> <li><a href="/wiki/%E5%8E%9F%E5%AD%90%E6%97%B6" class="mw-redirect" title="原子时">原子时</a></li> <li><a href="/wiki/%E4%B8%96%E7%95%8C%E6%97%B6" title="世界时">世界时</a></li> <li><a href="/wiki/%E9%96%8F%E7%A7%92" class="mw-redirect" title="閏秒">閏秒</a></li> <li><a href="/wiki/%E5%8D%94%E8%AA%BF%E4%B8%96%E7%95%8C%E6%99%82" class="mw-redirect" title="協調世界時">協調世界時</a></li> <li><a href="/wiki/%E8%B5%AB%E8%8C%B2" class="mw-redirect" title="赫茲">赫茲</a></li> <li><a href="/wiki/%E8%B4%9D%E5%8F%AF%E5%8B%92%E5%B0%94" class="mw-redirect" title="贝可勒尔">贝可勒尔</a></li> <li><a href="/wiki/%E6%AF%94%E5%86%B2" title="比冲">比衝</a>：單位流量燃料產生的推力，若燃料以重量計算，單位即為秒</li> <li><a href="/wiki/%E6%99%82%E9%96%93%E6%A8%99%E6%BA%96" title="時間標準">時間標準</a></li> <li><a href="/wiki/%E6%AF%AB%E7%A7%92" class="mw-redirect" title="毫秒">毫秒</a></li> <li><a href="/wiki/%E5%BE%AE%E7%A7%92" class="mw-redirect" title="微秒">微秒</a></li> <li><a href="/wiki/%E7%BA%B3%E7%A7%92" class="mw-redirect" title="纳秒">纳秒</a></li> <li><a href="/wiki/%E7%9A%AE%E7%A7%92" class="mw-redirect" title="皮秒">皮秒</a></li> <li><a href="/wiki/%E9%A3%9B%E7%A7%92" class="mw-redirect" title="飛秒">飛秒</a></li> <li><a href="/wiki/%E8%A8%88%E6%99%82%E5%B7%A5%E5%85%B7%E7%9A%84%E6%AD%B7%E5%8F%B2" title="計時工具的歷史">計時工具的歷史</a></li></ul> </div> <div class="mw-heading mw-heading2"><h2 id="參考資料"><span id=".E5.8F.83.E8.80.83.E8.B3.87.E6.96.99"></span>參考資料</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E7%A7%92&action=edit&section=11" title="编辑章节：參考資料"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="reflist columns references-column-count references-column-count-2" style="-moz-column-count: 2; -webkit-column-count: 2; column-count: 2; list-style-type: decimal;"> <ol class="references"> <li id="cite_note-BIPM21-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-BIPM21_1-0">^</a></b></span> <span class="reference-text"><cite class="citation web"><a rel="nofollow" class="external text" href="http://www.bipm.org/en/si/si_brochure/chapter2/2-1/second.html">Unit of time (second)</a>. SI Brochure. <a href="/wiki/BIPM" class="mw-redirect" title="BIPM">BIPM</a>. <span class="reference-accessdate"> [<span class="nowrap">2013-12-22</span>]</span>. （原始内容<a rel="nofollow" class="external text" href="https://web.archive.org/web/20140731074432/http://www.bipm.org/en/si/si_brochure/chapter2/2-1/second.html">存档</a>于2014-07-31）.</cite><span title="ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fzh.wikipedia.org%3A%E7%A7%92&rft.atitle=Unit+of+time+%28second%29&rft.genre=unknown&rft.jtitle=SI+Brochure&rft_id=http%3A%2F%2Fwww.bipm.org%2Fen%2Fsi%2Fsi_brochure%2Fchapter2%2F2-1%2Fsecond.html&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><cite class="citation journal"><a rel="nofollow" class="external text" href="http://www.learnersdictionary.com/search/sec">Second</a>. Merriam Webster Learner's Dictionary. <span class="reference-accessdate"> [<span class="nowrap">2014-11-03</span>]</span>. （原始内容<a rel="nofollow" class="external text" href="https://web.archive.org/web/20130325132310/http://www.learnersdictionary.com/search/SEC">存档</a>于2013-03-25）.</cite><span title="ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fzh.wikipedia.org%3A%E7%A7%92&rft.atitle=Second&rft.genre=article&rft_id=http%3A%2F%2Fwww.learnersdictionary.com%2Fsearch%2Fsec&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><cite class="citation web"><a rel="nofollow" class="external text" href="http://www.etymonline.com/index.php?term=second">Online Etymology Dictionary</a>. <span class="reference-accessdate"> [<span class="nowrap">2014-11-03</span>]</span>. （原始内容<a rel="nofollow" class="external text" href="https://web.archive.org/web/20141026101846/http://www.etymonline.com/index.php?term=second">存档</a>于2014-10-26）.</cite><span title="ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fzh.wikipedia.org%3A%E7%A7%92&rft.btitle=Online+Etymology+Dictionary&rft.genre=unknown&rft_id=http%3A%2F%2Fwww.etymonline.com%2Findex.php%3Fterm%3Dsecond&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><cite class="citation web"><a rel="nofollow" class="external text" href="http://physics.nist.gov/cuu/Units/second.html">Unit of time (second)</a>. NIST. <span class="reference-accessdate"> [<span class="nowrap">2014-11-04</span>]</span>. （原始内容<a rel="nofollow" class="external text" href="https://web.archive.org/web/20180726103642/https://physics.nist.gov/cuu/Units/second.html">存档</a>于2018-07-26） <span style="font-family: sans-serif; cursor: default; color:var(--color-subtle, #54595d); font-size: 0.8em; bottom: 0.1em; font-weight: bold;" title="连接到中文网页">（中文）</span>.</cite><span title="ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fzh.wikipedia.org%3A%E7%A7%92&rft.btitle=Unit+of+time+%28second%29&rft.genre=unknown&rft.pub=NIST&rft_id=http%3A%2F%2Fphysics.nist.gov%2Fcuu%2FUnits%2Fsecond.html&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-USNO-5"><span class="mw-cite-backlink">^ <a href="#cite_ref-USNO_5-0"><sup><b>5.0</b></sup></a> <a href="#cite_ref-USNO_5-1"><sup><b>5.1</b></sup></a> <a href="#cite_ref-USNO_5-2"><sup><b>5.2</b></sup></a> <a href="#cite_ref-USNO_5-3"><sup><b>5.3</b></sup></a> <a href="#cite_ref-USNO_5-4"><sup><b>5.4</b></sup></a> <a href="#cite_ref-USNO_5-5"><sup><b>5.5</b></sup></a> <a href="#cite_ref-USNO_5-6"><sup><b>5.6</b></sup></a> <a href="#cite_ref-USNO_5-7"><sup><b>5.7</b></sup></a></span> <span class="reference-text"><cite class="citation web"><a rel="nofollow" class="external text" href="http://tycho.usno.navy.mil/leapsec.html">Leap Seconds</a>. Time Service Department, <a href="/wiki/United_States_Naval_Observatory" class="mw-redirect" title="United States Naval Observatory">United States Naval Observatory</a>. <span class="reference-accessdate"> [<span class="nowrap">2012-03-24</span>]</span>. （原始内容<a rel="nofollow" class="external text" href="https://web.archive.org/web/20150312003149/http://tycho.usno.navy.mil/leapsec.html">存档</a>于2015-03-12）.</cite><span title="ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fzh.wikipedia.org%3A%E7%A7%92&rft.btitle=Leap+Seconds&rft.genre=unknown&rft.pub=Time+Service+Department%2C+United+States+Naval+Observatory&rft_id=http%3A%2F%2Ftycho.usno.navy.mil%2Fleapsec.html&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"><cite class="citation web"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20150203052913/http://www.nim.ac.cn/list/sc/4502">我国对确定国际标准时间有了表决权</a>. <span class="reference-accessdate"> [<span class="nowrap">2015-02-03</span>]</span>. （<a rel="nofollow" class="external text" href="http://www.nim.ac.cn/list/sc/4502">原始内容</a>存档于2015-02-03）.</cite><span title="ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fzh.wikipedia.org%3A%E7%A7%92&rft.btitle=%E6%88%91%E5%9B%BD%E5%AF%B9%E7%A1%AE%E5%AE%9A%E5%9B%BD%E9%99%85%E6%A0%87%E5%87%86%E6%97%B6%E9%97%B4%E6%9C%89%E4%BA%86%E8%A1%A8%E5%86%B3%E6%9D%83&rft.genre=unknown&rft_id=http%3A%2F%2Fwww.nim.ac.cn%2Flist%2Fsc%2F4502&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-Brochure9_2019-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-Brochure9_2019_7-0">^</a></b></span> <span class="reference-text"><cite class="citation web"><a rel="nofollow" class="external text" href="https://www.bipm.org/en/publications/si-brochure/">9th edition of the SI Brochure</a>. BIPM. 2019 <span class="reference-accessdate"> [<span class="nowrap">2019-05-20</span>]</span>. （原始内容<a rel="nofollow" class="external text" href="https://web.archive.org/web/20210118152000/https://www.bipm.org/en/publications/si-brochure/">存档</a>于2021-01-18）.</cite><span title="ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fzh.wikipedia.org%3A%E7%A7%92&rft.btitle=9th+edition+of+the+SI+Brochure&rft.date=2019&rft.genre=unknown&rft.pub=BIPM&rft_id=https%3A%2F%2Fwww.bipm.org%2Fen%2Fpublications%2Fsi-brochure%2F&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-Landes-8"><span class="mw-cite-backlink">^ <a href="#cite_ref-Landes_8-0"><sup><b>8.0</b></sup></a> <a href="#cite_ref-Landes_8-1"><sup><b>8.1</b></sup></a> <a href="#cite_ref-Landes_8-2"><sup><b>8.2</b></sup></a></span> <span class="reference-text"><cite class="citation book">Landes, David S. <a rel="nofollow" class="external text" href="https://archive.org/details/revolutionintime00land_1">Revolution in Time</a>. Cambridge, Massachusetts: Harvard University Press. 1983. <a href="/wiki/Special:%E7%BD%91%E7%BB%9C%E4%B9%A6%E6%BA%90/0-674-76802-7" title="Special:网络书源/0-674-76802-7"><span title="国际标准书号">ISBN</span> 0-674-76802-7</a>.</cite><span title="ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fzh.wikipedia.org%3A%E7%A7%92&rft.aufirst=David+S.&rft.aulast=Landes&rft.btitle=Revolution+in+Time&rft.date=1983&rft.genre=book&rft.isbn=0-674-76802-7&rft.place=Cambridge%2C+Massachusetts&rft.pub=Harvard+University+Press&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Frevolutionintime00land_1&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-9">^</a></b></span> <span class="reference-text"><cite class="citation book">Willsberger, Johann. <a rel="nofollow" class="external text" href="https://archive.org/details/clockswatchessix0000will">Clocks & watches</a>. New York: Dial Press. 1975. <a href="/wiki/Special:%E7%BD%91%E7%BB%9C%E4%B9%A6%E6%BA%90/0-8037-4475-7" title="Special:网络书源/0-8037-4475-7"><span title="国际标准书号">ISBN</span> 0-8037-4475-7</a>.</cite><span title="ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fzh.wikipedia.org%3A%E7%A7%92&rft.aufirst=Johann&rft.aulast=Willsberger&rft.btitle=Clocks+%26+watches&rft.date=1975&rft.genre=book&rft.isbn=0-8037-4475-7&rft.place=New+York&rft.pub=Dial+Press&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fclockswatchessix0000will&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook" class="Z3988"><span style="display:none;"> </span></span> full page color photo: 4th caption page, 3rd photo thereafter (neither pages nor photos are numbered).</span> </li> <li id="cite_note-Selin1997-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-Selin1997_10-0">^</a></b></span> <span class="reference-text"><cite class="citation book">Helaine Selin. <a rel="nofollow" class="external text" href="http://books.google.com/books?id=raKRY3KQspsC&pg=PA934">Encyclopaedia of the History of Science, Technology, and Medicine in Non-Westen Cultures</a>. Springer Science & Business Media. 1 January 1997: 934– <span class="reference-accessdate"> [<span class="nowrap">2014-11-04</span>]</span>. <a href="/wiki/Special:%E7%BD%91%E7%BB%9C%E4%B9%A6%E6%BA%90/978-0-7923-4066-9" title="Special:网络书源/978-0-7923-4066-9"><span title="国际标准书号">ISBN</span> 978-0-7923-4066-9</a>. （原始内容<a rel="nofollow" class="external text" href="https://web.archive.org/web/20140902041509/http://books.google.com/books?id=raKRY3KQspsC&pg=PA934">存档</a>于2014-09-02）.</cite><span title="ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fzh.wikipedia.org%3A%E7%A7%92&rft.au=Helaine+Selin&rft.btitle=Encyclopaedia+of+the+History+of+Science%2C+Technology%2C+and+Medicine+in+Non-Westen+Cultures&rft.date=1997-01-01&rft.genre=book&rft.isbn=978-0-7923-4066-9&rft.pages=934-&rft.pub=Springer+Science+%26+Business+Media&rft_id=http%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DraKRY3KQspsC%26pg%3DPA934&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-11">^</a></b></span> <span class="reference-text"><cite class="citation web"><a rel="nofollow" class="external text" href="http://www.roma1.infn.it/~dagos/history/sm/node3.html">The seconds pendulum</a>. Istituto Nazionale di Fisica Nucleare. <span class="reference-accessdate"> [<span class="nowrap">2014-11-04</span>]</span>. （原始内容<a rel="nofollow" class="external text" href="https://web.archive.org/web/20150924092009/http://www.roma1.infn.it/~dagos/history/sm/node3.html">存档</a>于2015-09-24） <span style="font-family: sans-serif; cursor: default; color:var(--color-subtle, #54595d); font-size: 0.8em; bottom: 0.1em; font-weight: bold;" title="连接到英语网页">（英语）</span>.</cite><span title="ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fzh.wikipedia.org%3A%E7%A7%92&rft.btitle=The+seconds+pendulum&rft.genre=unknown&rft.pub=Istituto+Nazionale+di+Fisica+Nucleare&rft_id=http%3A%2F%2Fwww.roma1.infn.it%2F~dagos%2Fhistory%2Fsm%2Fnode3.html&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-12">^</a></b></span> <span class="reference-text"><cite class="citation web">Jenkin (编). <a rel="nofollow" class="external text" href="http://books.google.com/books?id=540DAAAAQAAJ&pg=PR1#v=onepage&q&f=true">Reports of the committee on electrical standards</a>. British Association for the Advancement of Science: 90. 1873 <span class="reference-accessdate"> [<span class="nowrap">2014-11-04</span>]</span>. （原始内容<a rel="nofollow" class="external text" href="https://web.archive.org/web/20140920133315/http://books.google.com/books?id=540DAAAAQAAJ&pg=PR1#v=onepage&q&f=true">存档</a>于2014-09-20）.</cite><span title="ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fzh.wikipedia.org%3A%E7%A7%92&rft.au=Jenkin&rft.btitle=Reports+of+the+committee+on+electrical+standards&rft.date=1873&rft.genre=unknown&rft.pages=90&rft.pub=British+Association+for+the+Advancement+of+Science&rft_id=http%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3D540DAAAAQAAJ%26pg%3DPR1%23v%3Donepage%26q%26f%3Dtrue&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-13"><span class="mw-cite-backlink"><b><a href="#cite_ref-13">^</a></b></span> <span class="reference-text"><cite class="citation journal">Leschiutta, Sigfrido. <a rel="nofollow" class="external text" href="http://stacks.iop.org/0026-1394/42/S10">The definition of the 'atomic' second</a>. Metrologia: S10–S19.</cite><span title="ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fzh.wikipedia.org%3A%E7%A7%92&rft.atitle=The+definition+of+the+%27atomic%27+second&rft.aufirst=Sigfrido&rft.aulast=Leschiutta&rft.genre=article&rft.issue=3&rft.jtitle=Metrologia&rft.pages=S10-S19&rft.volume=42&rft_id=http%3A%2F%2Fstacks.iop.org%2F0026-1394%2F42%2FS10&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-14"><span class="mw-cite-backlink"><b><a href="#cite_ref-14">^</a></b></span> <span class="reference-text">R. A. Nelson <i>et al.</i>, "<span class="PDFlink"><a rel="nofollow" class="external text" href="http://www.cl.cam.ac.uk/~mgk25/time/metrologia-leapsecond.pdf">The leap second: its history and possible future</a></span><span style="font-size:smaller;">PDF（381 <a href="/wiki/Kibibyte" class="mw-redirect" title="Kibibyte">KiB</a>）</span>", <i>Metrologia</i> <b>38</b> (2000) 509-529, p. 515.</span> </li> <li id="cite_note-15"><span class="mw-cite-backlink"><b><a href="#cite_ref-15">^</a></b></span> <span class="reference-text"><cite class="citation book">McCarty, D. D.; <a href="/w/index.php?title=Dennis_McCarthy_(scientist)&action=edit&redlink=1" class="new" title="Dennis McCarthy (scientist)（页面不存在）">Seidelmann, P. K.</a> TIME From Earth Rotation to Atomic Physics. Weinheim: WILEY-VCH Verlag GmbH & Co. 2009: 68, 232.</cite><span title="ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fzh.wikipedia.org%3A%E7%A7%92&rft.au=Seidelmann%2C+P.+K.&rft.aufirst=D.+D.&rft.aulast=McCarty&rft.btitle=TIME+From+Earth+Rotation+to+Atomic+Physics&rft.date=2009&rft.genre=book&rft.pages=68%2C+232&rft.place=Weinheim&rft.pub=WILEY-VCH+Verlag+GmbH+%26+Co.&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook" class="Z3988"><span style="display:none;"> </span></span></span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="外部連結"><span id=".E5.A4.96.E9.83.A8.E9.80.A3.E7.B5.90"></span>外部連結</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E7%A7%92&action=edit&section=12" title="编辑章节：外部連結"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r82655521">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid #aaa;font-size:88%;line-height:1.25em;background-color:#f9f9f9;display:flow-root}.mw-parser-output .side-box-abovebelow,.mw-parser-output .side-box-text{padding:0.25em 0.9em}.mw-parser-output .side-box-image{padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .side-box-imageright{padding:2px 0.9em 2px 0;text-align:center}@media(min-width:500px){.mw-parser-output .side-box-flex{display:flex;align-items:center}.mw-parser-output .side-box-text{flex:1}}@media(min-width:720px){.mw-parser-output .side-box{width:238px}.mw-parser-output .side-box-right{clear:right;float:right;margin-left:1em}.mw-parser-output .side-box-left{margin-right:1em}}</style><div class="side-box side-box-right plainlinks sistersitebox" style="font-size:small;"><style data-mw-deduplicate="TemplateStyles:r82655520">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style> <div class="side-box-flex"> <div class="side-box-image"><span class="noviewer" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/e/ec/Wiktionary-logo.svg/40px-Wiktionary-logo.svg.png" decoding="async" width="40" height="38" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/ec/Wiktionary-logo.svg/60px-Wiktionary-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/ec/Wiktionary-logo.svg/80px-Wiktionary-logo.svg.png 2x" data-file-width="370" data-file-height="350" /></span></span></div> <div class="side-box-text plainlist">查看<a href="/wiki/%E7%BB%B4%E5%9F%BA%E8%AF%8D%E5%85%B8" title="维基词典">维基词典</a>中的词条「<b><a href="https://zh.wiktionary.org/wiki/second" class="extiw" title="wikt:second">second</a></b>」。</div></div> </div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r82655521" /><div class="side-box side-box-right plainlinks sistersitebox" style="font-size:small;"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r82655520" /> <div class="side-box-flex"> <div class="side-box-image"><span class="noviewer" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/40px-Commons-logo.svg.png" decoding="async" width="30" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/60px-Commons-logo.svg.png 1.5x" data-file-width="1024" data-file-height="1376" /></span></span></div> <div class="side-box-text plainlist"><a href="/wiki/%E7%BB%B4%E5%9F%BA%E5%85%B1%E4%BA%AB%E8%B5%84%E6%BA%90" title="维基共享资源">维基共享资源</a>中相关的多媒体资源：<b><a class="external text" href="https://commons.wikimedia.org/wiki/%E7%A7%92?uselang=zh">秒</a></b></div></div> </div> <ul><li><a rel="nofollow" class="external text" href="http://www.bipm.org/en/si/si_brochure/chapter2/2-1/second.html">Official BIPM definition of the second</a> （<a rel="nofollow" class="external text" href="//web.archive.org/web/20140731074432/http://www.bipm.org/en/si/si_brochure/chapter2/2-1/second.html">页面存档备份</a>，存于<a href="/wiki/%E4%BA%92%E8%81%94%E7%BD%91%E6%A1%A3%E6%A1%88%E9%A6%86" title="互联网档案馆">互联网档案馆</a>）</li> <li><a rel="nofollow" class="external text" href="http://tycho.usno.navy.mil/leapsec.html">Seconds and leap seconds by the USNO</a> （<a rel="nofollow" class="external text" href="//web.archive.org/web/20150312003149/http://tycho.usno.navy.mil/leapsec.html">页面存档备份</a>，存于<a href="/wiki/%E4%BA%92%E8%81%94%E7%BD%91%E6%A1%A3%E6%A1%88%E9%A6%86" title="互联网档案馆">互联网档案馆</a>）</li> <li><a rel="nofollow" class="external text" href="http://www.cl.cam.ac.uk/~mgk25/time/metrologia-leapsecond.pdf">The leap second: its history and possible future</a> （<a rel="nofollow" class="external text" href="//web.archive.org/web/20140812030338/http://www.cl.cam.ac.uk/~mgk25/time/metrologia-leapsecond.pdf">页面存档备份</a>，存于<a href="/wiki/%E4%BA%92%E8%81%94%E7%BD%91%E6%A1%A3%E6%A1%88%E9%A6%86" title="互联网档案馆">互联网档案馆</a>）</li> <li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20090214020937/http://www.npl.co.uk/server.php?show=ConWebDoc.1086">National Physical Laboratory: <i>Trapped ion optical frequency standards</i> </a></li> <li><a rel="nofollow" class="external text" href="http://resource.npl.co.uk/docs/networks/time/meeting3/klein.pdf"><i>High-accuracy strontium ion optical clock</i>; National Physical Laboratory (2005)</a> （<a rel="nofollow" class="external text" href="//web.archive.org/web/20160209231640/http://resource.npl.co.uk/docs/networks/time/meeting3/klein.pdf">页面存档备份</a>，存于<a href="/wiki/%E4%BA%92%E8%81%94%E7%BD%91%E6%A1%A3%E6%A1%88%E9%A6%86" title="互联网档案馆">互联网档案馆</a>）</li> <li><a rel="nofollow" class="external text" href="http://physics.nist.gov/cuu/Units/second.html">NIST: <i>Definition of the second</i>; notice the cesium atom must be in its ground state at 0 K</a> （<a rel="nofollow" class="external text" href="//web.archive.org/web/20180726103642/http://physics.nist.gov/cuu/Units/second.html">页面存档备份</a>，存于<a href="/wiki/%E4%BA%92%E8%81%94%E7%BD%91%E6%A1%A3%E6%A1%88%E9%A6%86" title="互联网档案馆">互联网档案馆</a>）</li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r84265675">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output .hlist ul dl,.mw-parser-output .hlist ul ol,.mw-parser-output .hlist ul ul{display:inline}.mw-parser-output .hlist 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href="/wiki/%E6%97%B6%E9%97%B4%E5%8D%95%E4%BD%8D" title="时间单位">时间单位</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0px"><div style="padding:0em 0.25em"><a href="/wiki/%E5%9C%B0%E8%B4%A8%E5%B9%B4%E4%BB%A3" title="地质年代">地质年代</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E5%8D%83%E7%BA%AA" title="千纪">千纪</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E4%B8%96%E7%BA%AA" title="世纪">世纪</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E5%B9%B4%E4%BB%A3" title="年代">年代</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E5%B9%B4" title="年">年</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E5%AD%A3%E5%BA%A6" title="季度">季</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E6%9C%88" title="月">月</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E6%97%AC" title="旬">旬</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E6%98%9F%E6%9C%9F" title="星期">星期</a>（週）<span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E6%97%A5" title="日">日</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E5%B0%8F%E6%97%B6" title="小时">小时</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E5%88%BB" title="刻">刻</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E5%88%86%E9%92%9F" title="分钟">分</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a class="mw-selflink selflink">秒</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E6%AF%AB%E7%A7%92" class="mw-redirect" title="毫秒">毫秒</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E5%BE%AE%E7%A7%92" class="mw-redirect" title="微秒">微秒</a><span style="white-space:nowrap; font-weight:bold;"> ·</span> <a href="/wiki/%E7%BA%B3%E7%A7%92" class="mw-redirect" title="纳秒">纳秒</a></div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r84265675" /><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r84261037" /></div><div role="navigation" class="navbox" aria-labelledby="时间" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="collapsible-title navbox-title" colspan="3"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r84265675" /><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r84244141" /><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:%E6%99%82%E9%96%93" title="Template:時間"><abbr title="查看该模板">查</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:%E6%99%82%E9%96%93" title="Template talk:時間"><abbr title="讨论该模板">论</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:%E7%BC%96%E8%BE%91%E9%A1%B5%E9%9D%A2/Template:%E6%99%82%E9%96%93" title="Special:编辑页面/Template:時間"><abbr title="编辑该模板">编</abbr></a></li></ul></div><div id="时间" style="font-size:110%;margin:0 5em"><a href="/wiki/%E6%97%B6%E9%97%B4" title="时间">时间</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%;line-height:12pt;">基本概念</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/%E5%8E%86%E5%8F%B2" title="历史">历史</a></li> <li><a href="/wiki/%E9%81%8E%E5%8E%BB" title="過去">過去</a></li> <li><a href="/wiki/%E7%8F%BE%E5%9C%A8" title="現在">現在</a></li> <li><a href="/wiki/%E6%9C%AA%E6%9D%A5" title="未来">未来</a></li> <li><a href="/wiki/%E6%B0%B8%E6%81%86" title="永恆">永恆</a></li> <li><a href="/wiki/%E6%97%B6%E9%97%B4%E7%AE%AD%E5%A4%B4" title="时间箭头">时间箭头</a></li></ul> </div></td><td class="noviewer navbox-image" rowspan="9" style="width:1px;padding:0px 0px 0px 2px"><div><span typeof="mw:File"><a href="/wiki/File:Wooden_hourglass_3.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/70/Wooden_hourglass_3.jpg/120px-Wooden_hourglass_3.jpg" decoding="async" width="76" height="154" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/70/Wooden_hourglass_3.jpg/250px-Wooden_hourglass_3.jpg 2x" data-file-width="967" data-file-height="1959" /></a></span></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;line-height:12pt;"><a href="/wiki/%E6%97%B6%E9%97%B4%E5%8D%95%E4%BD%8D" title="时间单位">时间单位</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0px"><div style="padding:0em 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">取法自然</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/%E9%8A%80%E6%B2%B3%E5%B9%B4" title="銀河年">銀河年</a></li> <li><a href="/wiki/%E9%BB%98%E5%86%AC%E7%AB%A0" title="默冬章">默冬章</a></li> <li><a href="/wiki/%E5%B9%B4" title="年">年</a></li> <li><a href="/wiki/%E5%AD%A3%E7%AF%80" class="mw-redirect" title="季節">季</a></li> <li><a href="/wiki/%E6%9C%88" title="月">月</a></li> <li><a href="/wiki/%E6%97%A5" title="日">日</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">人為單位</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a class="mw-selflink selflink">秒</a></li> <li><a href="/wiki/%E5%88%86%E9%90%98" class="mw-redirect" title="分鐘">分</a></li> <li><a href="/wiki/%E5%88%BB" title="刻">刻</a></li> <li><a href="/wiki/%E5%B0%8F%E6%97%B6" title="小时">时</a></li> <li><a href="/wiki/%E6%98%9F%E6%9C%9F" title="星期">周</a></li> <li><a href="/wiki/%E6%97%AC" title="旬">旬</a></li> <li><a href="/wiki/%E5%B9%B4%E4%BB%A3" title="年代">年代</a></li> <li><a href="/wiki/%E4%B8%96%E7%BA%AA" title="世纪">世纪</a></li> <li><a href="/wiki/%E5%8D%83%E7%BA%AA" title="千纪">千纪</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">中國古代曆法時間單位</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/%E5%85%83_(%E6%9B%86%E6%B3%95)" title="元 (曆法)">元</a></li> <li><a href="/wiki/%E7%B4%80_(%E6%9B%86%E6%B3%95)" title="紀 (曆法)">紀</a></li> <li><a href="/wiki/%E8%94%80_(%E4%B8%AD%E5%9C%8B)" title="蔀 (中國)">蔀</a></li> <li><a href="/wiki/%E7%AB%A0_(%E6%9B%86%E6%B3%95)" title="章 (曆法)">章</a></li> <li><a href="/wiki/%E5%9B%9E%E5%BD%92%E5%B9%B4" title="回归年">歲</a></li> <li><a href="/wiki/%E6%9C%94%E6%9C%9B%E6%9C%88" title="朔望月">月</a></li> <li><a href="/wiki/%E6%97%AC" title="旬">旬</a></li> <li><a href="/wiki/%E5%A4%AA%E9%98%B3%E6%97%A5" title="太阳日">日</a></li> <li><a href="/wiki/%E6%97%B6%E8%BE%B0" title="时辰">辰</a></li> <li><a href="/wiki/%E6%9B%B4" title="更">更</a></li> <li><a href="/wiki/%E7%82%B9_(%E6%97%B6%E9%97%B4)" title="点 (时间)">點</a></li> <li><a href="/wiki/%E5%88%BB" title="刻">刻</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">印度古代時間單位</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/%E6%99%82_(%E5%8F%A4%E5%8D%B0%E5%BA%A6)" title="時 (古印度)">大時</a></li> <li><a href="/wiki/%E9%A0%88%E8%87%BE" title="須臾">須臾</a></li> <li><a href="/w/index.php?title=%E7%BE%85%E8%B1%AB&action=edit&redlink=1" class="new" title="羅豫（页面不存在）">羅豫</a></li> <li><a href="/w/index.php?title=%E8%85%8A%E7%BC%9A&action=edit&redlink=1" class="new" title="腊缚（页面不存在）">腊缚</a></li> <li><a href="/wiki/%E5%BD%88%E6%8C%87" title="彈指">彈指</a></li> <li><a href="/w/index.php?title=%E5%9D%A6%E5%89%8E%E9%82%A3&action=edit&redlink=1" class="new" title="坦剎那（页面不存在）">坦剎那</a></li> <li><a href="/w/index.php?title=%E7%9E%AC%E9%A0%83&action=edit&redlink=1" class="new" title="瞬頃（页面不存在）">瞬頃</a></li> <li><a href="/wiki/%E5%BF%B5_(%E4%BD%9B%E6%95%99)" title="念 (佛教)">念</a></li> <li><a href="/wiki/%E5%88%B9%E9%82%A3" title="刹那">刹那</a></li> <li><a href="/w/index.php?title=%E7%94%9F%E6%BB%85&action=edit&redlink=1" class="new" title="生滅（页面不存在）">生滅</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">取自<a href="/wiki/%E7%89%A9%E7%90%86%E5%AD%A6" title="物理学">物理</a><a href="/wiki/%E7%90%86%E8%AB%96" title="理論">理論</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/%E6%99%AE%E6%9C%97%E5%85%8B%E6%99%82%E9%96%93" title="普朗克時間">普朗克時間</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;line-height:12pt;">天文的年</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/%E4%BA%A4%E7%82%B9%E5%B9%B4" title="交点年">交点年</a></li> <li><a href="/wiki/%E5%9B%9E%E5%BD%92%E5%B9%B4" title="回归年">回归年</a></li> <li><a href="/wiki/%E6%81%92%E6%98%9F%E5%B9%B4" title="恒星年">恒星年</a></li> <li><a href="/wiki/%E8%BF%91%E7%82%B9%E5%B9%B4" title="近点年">近点年</a></li> <li><a href="/wiki/%E5%84%92%E7%95%A5%E5%B9%B4" title="儒略年">儒略年</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;line-height:12pt;">天文的月</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/%E6%9C%88#天文學的背景" title="月">交點月</a></li> <li><a href="/wiki/%E6%9C%88#天文學的背景" title="月">回歸月</a></li> <li><a href="/wiki/%E6%81%92%E6%98%9F%E6%9C%88" title="恒星月">恒星月</a></li> <li><a href="/wiki/%E6%9C%88#天文學的背景" title="月">近點月</a></li> <li><a href="/wiki/%E6%9C%94%E6%9C%9B%E6%9C%88" title="朔望月">朔望月</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;line-height:12pt;">天文的日</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/%E5%A4%AA%E9%98%B3%E6%97%A5" title="太阳日">太阳日</a></li> <li><a href="/wiki/%E6%81%92%E6%98%9F%E6%97%A5" title="恒星日">恒星日</a></li> <li><a href="/wiki/%E6%9B%86%E6%9B%B8%E6%99%82" title="曆書時">曆書日</a></li> <li><a href="/wiki/%E5%84%92%E7%95%A5%E6%97%A5" title="儒略日">儒略日</a></li> <li><a href="/wiki/%E6%9C%83%E5%90%88%E6%97%A5" title="會合日">會合日</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;line-height:12pt;">天文的時</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/%E6%B0%91%E7%94%A8%E6%99%82" title="民用時">民用時</a></li> <li><a href="/wiki/%E6%81%92%E6%98%9F%E6%97%B6" title="恒星时">恒星时</a></li> <li><a href="/wiki/%E6%9B%86%E6%9B%B8%E6%99%82" title="曆書時">曆書時</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;line-height:12pt;">時間標準</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/%E5%9C%8B%E9%9A%9B%E5%8E%9F%E5%AD%90%E6%99%82" title="國際原子時">國際原子時</a></li> <li><a href="/wiki/%E5%8D%8F%E8%B0%83%E4%B8%96%E7%95%8C%E6%97%B6" title="协调世界时">協調世界時（UTC）</a></li> <li><a href="/wiki/%E6%A0%BC%E6%9E%97%E5%B0%BC%E6%B2%BB%E6%A8%99%E6%BA%96%E6%99%82%E9%96%93" title="格林尼治標準時間">格林尼治平时（GMT）</a></li> <li><a href="/wiki/%E5%9C%B0%E7%90%83%E6%99%82" title="地球時">地球時（TT）</a></li> <li><a href="/wiki/%E5%8A%9B%E5%AD%A6%E6%97%B6" title="力学时">力學時（DT）</a></li> <li><a href="/wiki/%E6%9C%88%E7%90%83%E6%97%B6" title="月球时">月球时</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;line-height:12pt;">授時與守時</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0px"><div style="padding:0em 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">授時</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/%E5%8E%9F%E6%99%82" title="原時">原時</a></li> <li><a href="/wiki/%E6%9B%86%E5%85%83" title="曆元">曆元</a></li> <li><a href="/wiki/%E5%B2%81%E5%B7%AE" class="mw-redirect" title="岁差">岁差</a></li> <li><a href="/wiki/%E5%9D%87%E6%99%82%E5%B7%AE" title="均時差">均時差</a></li> <li><a href="/wiki/%E5%81%95%E6%97%A5%E5%8D%87" title="偕日升">偕日升</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">守時</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/%E5%9C%B0%E6%96%B9%E5%B9%B3%E6%99%82" title="地方平時">地方平時</a></li> <li><a href="/wiki/%E6%97%B6%E5%8C%BA" title="时区">时区</a></li> <li><a href="/wiki/%E6%A8%99%E6%BA%96%E6%99%82%E9%96%93" title="標準時間">標準時間</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;line-height:12pt;">其他</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/%E6%99%82%E9%90%98" title="時鐘">時鐘</a></li> <li><a href="/wiki/%E5%88%86%E9%BB%9E" title="分點">分點</a></li> <li><a href="/wiki/%E6%99%82%E9%96%93%E5%9C%B0%E7%90%86%E5%AD%B8" title="時間地理學">時間地理學</a></li> <li><a href="/wiki/%E6%99%82%E9%96%93%E7%94%9F%E7%89%A9%E5%AD%B8" title="時間生物學">時間生物學</a></li> <li><a href="/wiki/%E6%9C%AA%E6%9D%A5%E5%AD%A6" title="未来学">未来学</a></li> <li><a href="/wiki/%E6%97%B6%E7%A9%BA" title="时空">时空</a></li> <li><a href="/wiki/%E6%97%B6%E9%97%B4%E6%97%85%E8%A1%8C" title="时间旅行">时间旅行</a></li> <li><a href="/wiki/UNIX%E6%97%B6%E9%97%B4" title="UNIX时间">UNIX时间</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="3"><div><b>参见</b>：<a href="/wiki/%E6%95%B0%E9%87%8F%E7%BA%A7_(%E6%97%B6%E9%97%B4)" title="数量级 (时间)">数量级 (时间)</a> · <span class="nowrap"><a href="/wiki/%E5%9C%B0%E8%B4%A8%E5%B9%B4%E4%BB%A3" title="地质年代">地质年代</a> ·</span> <span class="nowrap"><a href="/wiki/%E5%B9%B4%E4%BB%A3%E5%AD%A6" title="年代学">年代学</a></span></div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r84265675" /><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r84261037" /></div><div role="navigation" class="navbox" aria-labelledby="依據秒的冪的時間單位" style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="collapsible-title navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r84265675" /><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r84244141" /><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:%E7%A7%92%E7%9A%84%E6%95%B0%E9%87%8F%E7%BA%A7" title="Template:秒的数量级"><abbr title="查看该模板">查</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:%E7%A7%92%E7%9A%84%E6%95%B0%E9%87%8F%E7%BA%A7" title="Template talk:秒的数量级"><abbr title="讨论该模板">论</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:%E7%BC%96%E8%BE%91%E9%A1%B5%E9%9D%A2/Template:%E7%A7%92%E7%9A%84%E6%95%B0%E9%87%8F%E7%BA%A7" title="Special:编辑页面/Template:秒的数量级"><abbr title="编辑该模板">编</abbr></a></li></ul></div><div id="依據秒的冪的時間單位" style="font-size:110%;margin:0 5em">依據<a class="mw-selflink selflink">秒</a>的<a href="/wiki/%E5%86%AA" title="冪">冪</a>的<a href="/wiki/%E6%95%B0%E9%87%8F%E7%BA%A7_(%E6%97%B6%E9%97%B4)" title="数量级 (时间)">時間單位</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">負冪</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/%E6%99%AE%E6%9C%97%E5%85%8B%E6%99%82%E9%96%93" title="普朗克時間">普朗克時間</a></li> <li><a href="/wiki/%E9%98%BF%E7%A7%92" title="阿秒">阿秒</a></li> <li><a href="/wiki/%E9%A3%9E%E7%A7%92" title="飞秒">飞秒</a></li> <li><a href="/wiki/%E7%9A%AE%E7%A7%92" class="mw-redirect" title="皮秒">皮秒</a></li> <li><a href="/wiki/%E6%95%B0%E9%87%8F%E7%BA%A7_(%E6%97%B6%E9%97%B4)" title="数量级 (时间)">納秒</a></li> <li><a href="/wiki/%E5%BE%AE%E7%A7%92" class="mw-redirect" title="微秒">微秒</a></li> <li><a href="/wiki/%E6%AF%AB%E7%A7%92" class="mw-redirect" title="毫秒">毫秒</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">正冪</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a class="mw-selflink selflink">秒</a></li> <li><a href="/wiki/%E5%8D%83%E7%A7%92" class="mw-redirect" title="千秒">千秒</a></li> <li><a href="/wiki/%E7%99%BE%E8%90%AC%E7%A7%92" title="百萬秒">百萬秒</a></li> <li><a href="/wiki/%E5%90%89%E7%A7%92" class="mw-redirect" title="吉秒">吉秒</a></li> <li><a href="/wiki/%E6%95%B0%E9%87%8F%E7%BA%A7_(%E6%97%B6%E9%97%B4)" title="数量级 (时间)">兆秒和更長</a></li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r84265675" /><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r84261037" /></div><div role="navigation" class="navbox" aria-labelledby="国际单位" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="collapsible-title navbox-title" colspan="3"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r84265675" /><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r84244141" /><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:SI%E5%8D%95%E4%BD%8D%E5%AF%BC%E8%88%AA%E6%A1%86" title="Template:SI单位导航框"><abbr title="查看该模板">查</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:SI%E5%8D%95%E4%BD%8D%E5%AF%BC%E8%88%AA%E6%A1%86" title="Template talk:SI单位导航框"><abbr title="讨论该模板">论</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:%E7%BC%96%E8%BE%91%E9%A1%B5%E9%9D%A2/Template:SI%E5%8D%95%E4%BD%8D%E5%AF%BC%E8%88%AA%E6%A1%86" title="Special:编辑页面/Template:SI单位导航框"><abbr title="编辑该模板">编</abbr></a></li></ul></div><div id="国际单位" style="font-size:110%;margin:0 5em"><a href="/wiki/%E5%9B%BD%E9%99%85%E5%8D%95%E4%BD%8D%E5%88%B6" title="国际单位制">国际单位</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/%E5%9B%BD%E9%99%85%E5%8D%95%E4%BD%8D%E5%88%B6%E5%9F%BA%E6%9C%AC%E5%8D%95%E4%BD%8D" title="国际单位制基本单位">基本单位</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a class="mw-selflink selflink">秒</a></li> <li><a href="/wiki/%E7%B1%B3_(%E5%8D%95%E4%BD%8D)" title="米 (单位)">米</a></li> <li><a href="/wiki/%E5%8D%83%E5%85%8B" title="千克">千克</a></li> <li><a href="/wiki/%E5%BC%80%E5%B0%94%E6%96%87" title="开尔文">开尔文</a></li> <li><a href="/wiki/%E5%AE%89%E5%9F%B9" title="安培">安培</a></li> <li><a href="/wiki/%E5%9D%8E%E5%BE%B7%E6%8B%89" title="坎德拉">坎德拉</a></li> <li><a href="/wiki/%E6%91%A9%E5%B0%94_(%E5%8D%95%E4%BD%8D)" title="摩尔 (单位)">摩尔</a></li></ul> </div></td><td class="noviewer navbox-image" rowspan="4" style="width:1px;padding:0px 0px 0px 2px"><div><span typeof="mw:File"><a href="/wiki/File:International_System_Of_Units_Logo.png" class="mw-file-description" title="SI base unit"><img alt="SI base unit" src="//upload.wikimedia.org/wikipedia/commons/thumb/1/11/International_System_Of_Units_Logo.png/250px-International_System_Of_Units_Logo.png" decoding="async" width="125" height="125" class="mw-file-element" data-file-width="2481" data-file-height="2481" /></a></span></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/%E5%9B%BD%E9%99%85%E5%8D%95%E4%BD%8D%E5%88%B6%E5%AF%BC%E5%87%BA%E5%8D%95%E4%BD%8D" title="国际单位制导出单位">导出单位</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/%E8%B5%AB%E5%85%B9" title="赫兹">赫兹</a></li> <li><a href="/wiki/%E5%BC%A7%E5%BA%A6" title="弧度">弧度</a></li> <li><a href="/wiki/%E7%90%83%E9%9D%A2%E5%BA%A6" title="球面度">球面度</a></li> <li><a href="/wiki/%E7%89%9B%E9%A0%93_(%E5%96%AE%E4%BD%8D)" title="牛頓 (單位)">牛頓</a></li> <li><a href="/wiki/%E5%B8%95%E6%96%AF%E5%8D%A1" title="帕斯卡">帕斯卡</a></li> <li><a href="/wiki/%E7%84%A6%E8%80%B3" title="焦耳">焦耳</a></li> <li><a href="/wiki/%E7%93%A6%E7%89%B9" title="瓦特">瓦特</a></li> <li><a href="/wiki/%E5%BA%93%E4%BB%91" title="库仑">库仑</a></li> <li><a href="/wiki/%E4%BC%8F%E7%89%B9" title="伏特">伏特</a></li> <li><a href="/wiki/%E6%AD%90%E5%A7%86" title="歐姆">歐姆</a></li> <li><a href="/wiki/%E6%B3%95%E6%8B%89" title="法拉">法拉</a></li> <li><a href="/wiki/%E8%A5%BF%E9%96%80%E5%AD%90_(%E5%96%AE%E4%BD%8D)" title="西門子 (單位)">西门子</a></li> <li><a href="/wiki/%E9%9F%A6%E4%BC%AF_(%E5%8D%95%E4%BD%8D)" title="韦伯 (单位)">韋伯</a></li> <li><a href="/wiki/%E7%89%B9%E6%96%AF%E6%8B%89_(%E5%8D%95%E4%BD%8D)" title="特斯拉 (单位)">特斯拉</a></li> <li><a href="/wiki/%E4%BA%A8%E5%88%A9_(%E5%8D%95%E4%BD%8D)" title="亨利 (单位)">亨利</a></li> <li><a href="/wiki/%E6%91%84%E6%B0%8F%E6%B8%A9%E6%A0%87" title="摄氏温标">摄氏度</a></li> <li><a href="/wiki/%E6%B5%81%E6%98%8E" title="流明">流明</a></li> <li><a href="/wiki/%E5%8B%92%E5%85%8B%E6%96%AF" title="勒克斯">勒克斯</a></li> <li><a href="/wiki/%E8%B4%9D%E5%85%8B%E5%8B%92%E5%B0%94" title="贝克勒尔">贝克勒尔</a></li> <li><a href="/wiki/%E6%88%88%E7%91%9E" title="戈瑞">戈瑞</a></li> <li><a href="/wiki/%E8%A5%BF%E5%BC%97" title="西弗">希沃特</a></li> <li><a href="/wiki/%E9%96%8B%E7%89%B9" title="開特">開特</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/%E5%8F%AF%E4%B8%A6%E7%94%A8%E5%96%AE%E4%BD%8D" title="可並用單位">可並用單位</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/%E5%A4%A9%E6%96%87%E5%96%AE%E4%BD%8D" title="天文單位">天文單位</a></li> <li><a href="/wiki/%E5%85%AC%E5%99%B8" title="公噸">吨</a></li> <li><a href="/wiki/%E9%81%93%E5%B0%94%E9%A1%BF_(%E5%8D%95%E4%BD%8D)" title="道尔顿 (单位)">原子質量單位</a></li> <li><a href="/wiki/%E5%85%AC%E5%8D%87" title="公升">升</a></li> <li><a href="/wiki/%E5%88%86%E9%92%9F" title="分钟">分</a></li> <li><a href="/wiki/%E5%B0%8F%E6%97%B6" title="小时">小时</a></li> <li><a href="/wiki/%E6%97%A5" title="日">天</a></li> <li><a href="/wiki/%E5%BA%A6_(%E8%A7%92)" title="度 (角)">度</a></li> <li><a href="/wiki/%E5%BC%A7%E5%88%86" title="弧分">角分</a></li> <li><a href="/wiki/%E5%BC%A7%E7%A7%92" title="弧秒">角秒</a></li> <li><a href="/wiki/%E9%9B%BB%E5%AD%90%E4%BC%8F%E7%89%B9" title="電子伏特">电子伏</a></li> <li><a href="/wiki/%E5%88%86%E8%B2%9D" title="分貝">分貝</a></li> <li><a href="/wiki/%E5%85%AC%E9%A1%B7" title="公顷">公顷</a></li> <li><a href="/wiki/%E5%A5%88%E5%9F%B9" title="奈培">奈培</a></li> <li><a href="/wiki/%E5%8E%9F%E5%AD%90%E5%8D%95%E4%BD%8D%E5%88%B6" title="原子单位制">原子單位</a></li> <li><a href="/wiki/%E8%87%AA%E7%84%B6%E5%96%AE%E4%BD%8D%E5%88%B6" class="mw-redirect" title="自然單位制">自然單位</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">參閱</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0px"><div style="padding:0em 0.25em"> <ul><li><a href="/wiki/%E8%AE%A1%E9%87%8F%E5%8D%95%E4%BD%8D" title="计量单位">计量单位</a></li> <li><a href="/wiki/%E8%AE%A1%E9%87%8F%E5%8D%95%E4%BD%8D%E5%88%B6" title="计量单位制">计量单位制</a></li> <li><a href="/wiki/%E5%8D%95%E4%BD%8D%E6%8D%A2%E7%AE%97" title="单位换算">单位换算</a></li> <li><a href="/wiki/%E5%9B%BD%E9%99%85%E5%8D%95%E4%BD%8D%E5%88%B6%E8%AF%8D%E5%A4%B4" title="国际单位制词头">国际单位制词头</a></li> <li><a href="/wiki/%E5%9B%BD%E9%99%85%E5%8D%95%E4%BD%8D%E5%88%B6%E5%9F%BA%E6%9C%AC%E5%8D%95%E4%BD%8D" title="国际单位制基本单位">国际单位制基本单位</a></li> <li><a href="/wiki/2019%E5%B9%B4%E5%9C%8B%E9%9A%9B%E5%96%AE%E4%BD%8D%E5%88%B6%E5%9F%BA%E6%9C%AC%E5%96%AE%E4%BD%8D%E9%87%8D%E6%96%B0%E5%AE%9A%E7%BE%A9" title="2019年國際單位制基本單位重新定義">2019年國際單位制基本單位重新定義</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="3"><div> <ul><li><span typeof="mw:File"><span title="分类"><img alt="分类" src="//upload.wikimedia.org/wikipedia/commons/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" 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