常見例句雙語(yǔ)例句Since the process of colliding mechanism of electric rock drill is complex, there isn′t a set of calculating method practically still now.電動(dòng)鑿巖機(jī)沖擊機(jī)搆因其受力過(guò)程比較複襍，至今尚無(wú)一套可行的計(jì)算方法。 返回 rock electric drill