旋转钻进 meaning in English

rotary boring

Analysis of energy for rotary drilling in weathered granite formation
风化花岗岩地层旋转钻进中的能量分析
The machine is circumgyration drilling machine that the rotary drives drilling tool to bore by rotation , adopts full hydraulic pressure drive , constant power loop , wheel cylinder startup , oil cylinder disappear ing end bumper , electrohydraulic combined control , steel wheel traveling and disassembly transport
该机是由转盘带动钻具旋转钻进的回转钻机，采用全液压驱动，恒功率回路，分泵启动，油缸升降，电液复合操纵，钢轮行走，解体运输。