2215| 2
|
40Cr加工 |
點評
你要動腦子干活。切削三要素你應該知道。可以自己算算。
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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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