Since the process of colliding mechanism of electric rock drill is complex, there isn't a set of calculating method practically still now.

电动凿岩机冲击机构因其受力过程比较复杂，至今尚无一套可行的计算方法。

youdao

Since the process of colliding mechanism of electric rock drill is complex, there isn't a set of calculating method practically still now.

电动凿岩机冲击机构因其受力过程比较复杂，至今尚无一套可行的计算方法。

youdao