5802| 13
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誰用過錐度鉆頭,請指教 |
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點評
擠削不能吧,肯定有側刃吧,擠削的阻力更大就不怕掰折了?
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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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