tri-cone bit 三牙轮钻头
mining tri-cone bit 矿用牙轮钻头
tri-cone rock bit 三牙轮钻头
tri-cone combination bit 三牙轮组合钻头
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 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。
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。
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