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把被子放进满满一缸水里,然后称一称排出的水的重量,就是您老人家被子的分量了,阿基米德就是这么干的。

lemondy (柠檬2000)
(#29460@0)
2001-3-1 -04:00
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Back To Topic: 原来空气没重量!我一条12斤的被子,抽成真空还是12斤!

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