rotary drilling rig meaning in Chinese

旋转式钻机
旋转钻机

Hydraulic system design and analysis for hydraulic rotary drilling rig
全液压旋挖钻机液压系统设计与分析
Application of fully - cased bored piles by rotary drilling rigs in power plants
旋挖式全护筒钻孔灌注桩在电厂建设中的应用
Xgr18 type multi functional rotary drilling rig developed by basic company fill gaps in the province
基础公司研制的xgr18型多功能旋挖钻机填补省内空白。
It is a walking - frame rotary drill rig , suitable for industrial and civil piling construction
简述：该机是适应于工业与民用建筑桩基础施工的步履式螺旋钻机。