4644| 9
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U鉆的效率問題求助 |
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點(diǎn)評(píng)
它的是球墨鑄鐵。
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點(diǎn)評(píng)
太快了吧!!!
各家鉆頭槽型和材質(zhì)涂層不同的,怎么可能隨便亂試,你的參數(shù)基于什么被加工材質(zhì)什么孔徑什么刀具材質(zhì)?
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