4938| 15
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鏈傳動的傳動功率要怎么確定�,。� |
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點評
重量和速度相乘,,乘上系數。
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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,浙公網安備33038202004372號 )
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