檢視密封的原始碼

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中文名；密封

外文名；seal

解    释；指严密地封闭
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'''密封'''，指严密地封闭。语出晋葛洪《[[抱朴子·金丹]]》：“又尹子丹法：以云母水和丹，密封致金华池中，一年出，服一刀圭，尽一斤得五百岁。”

密封可分为静密封和动密封两大类。密封是防止流体或固体微粒从相邻结合面间泄漏以及防止外界杂质如灰尘与水分等侵入[[机器]]设备内部的零部件或措施。 静密封指严密地封闭密封舱[[密封]]容器用于密封函件和遗嘱的印章。<ref>[http://wenku.cyjzzd.com/a/1300005754 投标用标书密封条格式范本],绿色文库网 , 2019-06-19</ref>