In the light of the inefficiency of the conventional 2 - D engagement design method for tricone bits and the untruth of the 2 - D engagement chart, a new Program for bit engagement design is develope.
针对三牙轮钻头传统的二维啮合设计方法的低效率和二维啮合图的不真实性，开发出一个三牙轮钻头啮合设计新程序。
In the light of the inefficiency of the conventional 2 - D engagement design method for tricone bits and the untruth of the 2 - D engagement chart, a new Program for bit engagement design is develope.
针对三牙轮钻头传统的二维啮合设计方法的低效率和二维啮合图的不真实性，开发出一个三牙轮钻头啮合设计新程序。
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