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硬質(zhì)合金階梯鉆倒角刃有小缺口,請(qǐng)教 |
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點(diǎn)評(píng)
還有是同一廠家,同一批產(chǎn)品嘛? 會(huì)不會(huì)廠家換了,棒料變了,制造參數(shù)也變了,(我說(shuō)的變不是輪廓參數(shù),小徑,大徑,階梯角度的變化)
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