7633| 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(zhì)合金絲錐一只幾千大洋,斷了虧死了
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Archiver|手機版|小黑屋|機械社區(qū) ( 京ICP備10217105號-1,京ICP證050210號,浙公網(wǎng)安備33038202004372號 )
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