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鉆孔難題 |
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點(diǎn)評(píng)
鉆床是專門(mén)為鉆孔而設(shè)計(jì)的,應(yīng)該效率最高!可分為兩次鉆削,第二次精鉆!修光刃口一樣可以得到較好的粗糙度的!而且效率不會(huì)低的。
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