6418| 8
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鑄鋼件ZG310—570,調質硬度為240—280,該用什么型號的刀加工? |
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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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