rotary kelly bushing的意思|示意
美 / /
英 / /
旋转方钻杆衬套
rotary kelly bushing的网络常见释义
补心海拔 ... run in hole（将仪器）下入井中 rotary kelly bushing补心海拔 road tanker油罐车 ...
rotary kelly bushing相关例句
The kelly is used to transmit rotary motion from the rotary table or kelly bushing to the drillstring, while allowing the drillstring to be lowered or raised during rotation.
方钻杆用于传递转盘或者方钻杆补心的旋转运动到钻柱上去，并允许钻柱在上提或下放的过程中旋转。