contrnl

常见例句

• Position contrnl System
  位置控制系统
• s: Steerable rotary closed - loop is very complex.By closed - loop contrnl of downhole and its own adjusting, the drill bit goes ahead along the pre - planed profile during entire drilling procedure.
  井下自动控制定向旋转闭环钻井系统是指全程旋转、井下闭环控制，钻头沿着设计轨迹钻进，它是个非常复杂的系统。
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