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請(qǐng)問(wèn)鉆平底盲孔要用什么鉆頭,? |
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點(diǎn)評(píng)
無(wú)論計(jì)時(shí),,計(jì)件,,你先實(shí)際比較一下,這兩種工藝(限定鉆床)還真不好說(shuō),。而且你要考慮到鉆頭壽命,。
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