6828| 4
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用車床,普通麻花鉆鉆孔(45鋼)時切削速度選多少合適? |
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點評
進給量看鉆頭的大小了
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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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