14129| 19
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物體在線性導軌上滑動,所需推力如何計算 |
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點評
加速是勻加速嗎?減速是勻減速嗎?
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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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