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.
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Design calculation process as well as machining technology of rock bit are detailed introduced.
详细介绍了104牙轮钻头的设计计算过程和加工工艺.
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This paper analyses the factors that affect the contact stress of rock bit journal bearing.
文章分析了牙轮钻头滑动轴承接触力学性质的影响因素.
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