6166| 15
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长条工件加工工艺请教 |
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点评
毛胚内应力,加工内应力是必须要消除的
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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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