9598| 25
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部门招了个新人,工作2年,图纸都看不懂 |
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点评
不管哪种齿轮本身材料要过关,看来你对齿轮了解不深刻啊
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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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