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知道力和行程怎么求時間 2帶圖 |
點評
彈簧變形量就是 64mm 拉倒64mm的時候是1200N 的力
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Archiver|手機版|小黑屋|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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