12633| 14
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平面渦卷彈簧(發(fā)條彈簧)其剛度及功怎么算? |
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點評
看樓上已經(jīng)補充了。
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點評
希望能幫到你,。
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點評
手上沒有
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小黑屋|手機版|Archiver|機械社區(qū) ( 京ICP備10217105號-1,,京ICP證050210號,,浙公網(wǎng)安備33038202004372號 )
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