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《长安十二时辰》里的这个，可能是历史上最简单闹钟
source link: https://tech.sina.com.cn/d/c/2019-07-23/doc-ihytcerm5568345.shtml
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来源：科学大院最近大热的《长安十二时辰》不知道大家看了没，在这部剧中，时间是非常重要的一条主线，剧中也出现了各式各样的古代计时工具，比如下面这个：剧中李司丞命令架起“火闹钟”来倒计时：“火闹钟”只是古代众多计时工具的一种。今天，大院er就带
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