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Terms for subject Drilling containing 心盘 | all forms
ChineseEnglish
方钻杆补心自动对中导盘kelly bushing guide skirt
转盘补心rotary drive bushing
转盘补心rotary kelly bushing
转盘补心rotary bushing
转盘补心测量rotary bushing measurement
转盘补心至地面的距离rotary drive bushing to ground
转盘补心高rotary drive bushing to ground

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