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一公尺究竟有多長？從單擺到相對論，公尺制的精彩變身史！
Showing live article 1615 of 1714 in channel 18321891
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Language: Chinese
Channel Number: 18321891
Article Number: 1615
Date: July 15, 2020, 12:00 am
URL: https://pansci.asia/archives/187953
GUID: https://pansci.asia/?p=187953
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