The bent-housing motor is relatively rigid,so the geometric method can be used to calculate the build angle rate of steerable motor.

 
  • 彎殼體導向鉆具的剛性大、變形小,因此可采用幾何法來(lái)計算造斜率。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan