Assemble inserts and cones respectively, and prepare for calculating 3d engaging distance of tri-cone rock bit.
对牙轮和牙齿分别进行了装配，为三维啮合间隙计算做了充分准备。
The structure of tri-cone rock bit is complicated. As the cutting structure touch the stratum directly, it affects the process of breaking rock and the performance of tri-cone rock bit.
三牙轮钻头结构复杂，其中齿面结构直接与地层接触，对于岩石破碎过程和钻头工作性能的影响最大。
The experiential ratio of optimum combination of three nozzles on tri cone bit is obtained based on many field experiments.
通过大量的现场试验，得出三牙轮钻头三喷嘴优化组合的经验比值。
The experiential ratio of optimum combination of three nozzles on tri cone bit is obtained based on many field experiments.
通过大量的现场试验，得出三牙轮钻头三喷嘴优化组合的经验比值。
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