7351| 11
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調質(淬火+高溫回火)會改善切削性能嗎? |
點評
毛坯材質軟,軟到不能機加工了????
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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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