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出道題:壓緊的彈簧有彈性勢能,此時用酸融化它,勢能去哪里了? |
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點評
https://www.zhihu.com/question/21069416
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小黑屋|手機版|Archiver|機械社區 ( 京ICP備10217105號-1,京ICP證050210號,浙公網安備33038202004372號 )
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