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Terms for subject Drilling containing 六六六 | all forms
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六方方钻杆hexagonal kelly
六方震击器hexagonal bumper jar
六点式底部扩眼器six point bottom hole reamer
六点式旋转扩眼器six point rotary reamer
六点式滚子稳定器six point roller reamer
六臂地层倾角测量仪six arm dipmeter
六角头螺栓hex-head screw
六角由壬hex union
内六方扳手allen wrench
内六方扳手allen key
内六方螺栓hex typ socket screw
内六方螺栓alien type socket screw
内六方螺钉socket head cap screw