7061| 17
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絲錐攻鋼件壽命問題 |
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點評
想辦法把孔割開,,打硬度啊 如果有問題就從鉆頭上改善,。
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點評
硬質合金絲錐一只幾千大洋,,斷了虧死了
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小黑屋|手機版|Archiver|機械社區(qū) ( 京ICP備10217105號-1,,京ICP證050210號,浙公網安備33038202004372號 )
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