It has changed the traditional design order in checking the diameter of bit.
它改变了牙轮钻头直径校核的传统设计顺序。
Diameter controlling is of great importance in rock bit manufacturing.
保证三牙轮钻头的直径是钻头制造工艺的重点。
The difference in the caliper-measured diameter of the well and the bit size.
指井径仪测量的井眼直径与钻头尺寸之差。
The difference in the caliper-measured diameter of the well and the bit size.
指井径仪测量的井眼直径与钻头尺寸之差。
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