腾讯时时彩

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                新聞動態

                鏜削的定》義

                2019-04-03 14:37:21

                鏜削:通過設備ω上的鏜刀與工件間的相對運動,對工件加工表面進行切削,使一層金屬被切離加〓工表面,並使加工表面獲得一定的加工精度和表面粗糙幫助度的切削過程。