3653| 4
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两个凸轮在给予推杆40KG左右的推力时, 能对下面的钢板有多大的压力 |
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Archiver|手机版|小黑屋|机械社区 ( 京ICP备10217105号-1,京ICP证050210号,浙公网安备33038202004372号 )
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