稳定平台单元机械系统的设计是旋转导向钻井工具的关键和难点之一。
Mechanical design of stabilized platform unit is one of the key techniques in the rotary steering drilling tool.
井下随钻测量系统的存储单元是调制式旋转导向钻井系统的关键技术之一。
The storage unit of measurement while drilling system is one of the important parts of rotary steerable drilling tool.
本单元组包括拥有和经营自己生意的挖掘，分级，铺路，钻井和爆破承建商。
This unit group includes excavating, grading, paving, drilling and blasting contractors who own and operate their own business.
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