7299| 11
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做了一個活塞,放什么公差和光潔度好 |
點評
謝了!可0.4的光潔度怎么加工 ?大俠可否指點一二
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點評
兩個都要做
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Archiver|手機版|小黑屋|機械社區 ( 京ICP備10217105號-1,京ICP證050210號,浙公網安備33038202004372號 )
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