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给钱的话,别人会不会愿意教我设计 |
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点评
这个手册能帮助机械工人了解材料,制图,钳工,标准件,计算公式,几乎机械工人要用到的全有,
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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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