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.ambox-move{border-left-color:#9932cc!important}html.skin-theme-clientpref-os .mw-parser-output .ambox-protection{border-left-color:#a2a9b1!important}}</style> <table class="box-Expand_language plainlinks metadata ambox ambox-notice" role="presentation"> <tbody> <tr> <td class="mbox-text"> <div class="mbox-text-span"> 此條目<b>可参照<a href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://en.wikipedia.org/wiki/Normalnull" class="extiw" title="en:Normalnull">英語維基百科</a>相應條目来扩充</b>。<span class="hide-when-compact"></span> <small class="date-container"><i>(<span class="date">2020年4月22日</span>)</i></small><span class="hide-when-compact"><br><small>若您熟悉来源语言和主题，请协助<a href="https://zh-m-wikipedia-org.translate.goog/wiki/Wikipedia:%E7%BF%BB%E8%AF%91%E5%AE%88%E5%88%99?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" class="mw-redirect" title="Wikipedia:翻译守则">参考外语维基百科扩充条目</a>。请勿直接提交机械翻译，也不要翻译不可靠、低品质内容。依<a href="https://zh-m-wikipedia-org.translate.goog/wiki/Wikipedia:%E5%9C%A8%E7%BB%B4%E5%9F%BA%E7%99%BE%E7%A7%91%E5%86%85%E5%A4%8D%E5%88%B6%E5%86%85%E5%AE%B9?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Wikipedia:在维基百科内复制内容">版权协议</a>，译文需<a href="https://zh-m-wikipedia-org.translate.goog/wiki/Wikipedia:%E7%B7%A8%E8%BC%AF%E6%91%98%E8%A6%81?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB#%E7%BF%BB%E8%AD%AF%E6%96%87%E7%AB%A0" title="Wikipedia:編輯摘要">在编辑摘要注明来源</a>，或于讨论页顶部标记<code>{{<a href="https://zh-m-wikipedia-org.translate.goog/wiki/Template:Translated_page?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Template:Translated page">Translated page</a>}}</code>标签。</small></span><span class="hide-when-compact"></span> </div></td> </tr> </tbody> </table> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r83732972"> <table class="box-Unreferenced plainlinks metadata ambox ambox-content" role="presentation"> <tbody> <tr> <td class="mbox-text"> <div class="mbox-text-span"> 此條目<b>没有列出任何<a href="https://zh-m-wikipedia-org.translate.goog/wiki/Wikipedia:%E5%88%97%E6%98%8E%E6%9D%A5%E6%BA%90?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Wikipedia:列明来源">参考或来源</a></b>。<span class="hide-when-compact"></span> <small class="date-container"><i>(<span class="date">2020年4月22日</span>)</i></small><span class="hide-when-compact"><br><small>維基百科所有的內容都應該<a href="https://zh-m-wikipedia-org.translate.goog/wiki/Wikipedia:%E5%8F%AF%E4%BE%9B%E6%9F%A5%E8%AD%89?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Wikipedia:可供查證">可供查證</a>。请协助補充<a href="https://zh-m-wikipedia-org.translate.goog/wiki/Wikipedia:%E5%8F%AF%E9%9D%A0%E6%9D%A5%E6%BA%90?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="Wikipedia:可靠来源">可靠来源</a>以<a class="external text" href="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://zh.wikipedia.org/w/index.php?title%3D%25E6%25A0%2587%25E5%2587%2586%25E9%259B%25B6%25E7%2582%25B9%26action%3Dedit">改善这篇条目</a>。无法查证的內容可能會因為異議提出而被移除。</small></span><span class="hide-when-compact"></span> </div></td> </tr> </tbody> </table> <p><b>标准零点</b>（德語：<span lang="de">Normalnull</span> 或 <span lang="de">Normal-Null</span>，缩写为<b>N. N.</b> 或 <b>NN</b>）是<a href="https://zh-m-wikipedia-org.translate.goog/wiki/%E5%BE%B7%E5%9B%BD?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="德国">德国</a>于1879年至1992年间采用的高程基准，已由<a href="https://zh-m-wikipedia-org.translate.goog/wiki/%E6%A0%87%E5%87%86%E9%AB%98%E7%A8%8B%E9%9B%B6%E7%82%B9?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" title="标准高程零点">标准高程零点</a>（德語：<span lang="de">Normalhöhennull</span>，简称NHN）取代。使用该参考系统时高程标记为“xxx Meter über Normalnull”（标准零点以上xxx米），简记“xxx m ü. NN”。</p> <figure class="mw-default-size" typeof="mw:File/Thumb"> <a href="https://zh-m-wikipedia-org.translate.goog/wiki/File:Borne_de_nivellement_Kriegstor.JPG?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-GB" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/71/Borne_de_nivellement_Kriegstor.JPG/220px-Borne_de_nivellement_Kriegstor.JPG" decoding="async" width="220" height="165" class="mw-file-element" srcset="https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://upload.wikimedia.org/wikipedia/commons/thumb/7/71/Borne_de_nivellement_Kriegstor.JPG/330px-Borne_de_nivellement_Kriegstor.JPG 1.5x,https://translate.google.com/website?sl=auto&tl=en&hl=en-GB&u=https://upload.wikimedia.org/wikipedia/commons/thumb/7/71/Borne_de_nivellement_Kriegstor.JPG/440px-Borne_de_nivellement_Kriegstor.JPG 2x" data-file-width="2272" data-file-height="1704"></a> <figcaption> 用标准零点来标示海拔的标志 </figcaption> </figure> </section> <div class="mw-heading mw-heading2 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