2852| 14
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随手拍29—轿车变速箱齿轮 |
点评
我认为用滑动主要是空间结构考虑
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点评
粉末冶金轴套和那种带石墨粒子的轴套,哪种自润滑性?
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小黑屋|手机版|Archiver|机械必威体育网址 ( 京ICP备10217105号-1,京ICP证050210号,浙公网安备33038202004372号 )
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