Rotary boring是什么意思

网络释义

1)Rotary boring,旋轉式鑽孔2)Gyratory crusher,旋轉式碎石機3)boring,鑽探,鑽孔4)borehole (boring),鑽孔5)borer,鑽孔,鑽機,鑽頭6)Rotational slip,旋轉滑動