3457| 7
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200比1的减速器应该设计成几级传动? |
点评
呵呵,这个才是关键哈
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小黑屋|手机版|Archiver|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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