Study of kinematics of offset single cone bit
偏心单牙轮钻头运动学研究
Dynamic model of roller bit with nine degrees of freedom;
九自由度牙轮钻头动力学模型研究
Computer simulation for the side-cutting of roller bits;
牙轮钻头侧向切削的计算机仿真
Model to determine rock drillability by roller bit;
牙轮钻头可钻性级值的确定方法
bridge of the bit
四牙轮钻头牙轮支架
cone type roller bearing rock bit
滚柱轴承锥形牙轮钻头
Blast hole tricone rock bits
GB/T13343-1992矿用三牙轮钻头
Comparative analysis of drilling characteristics of dia- mond bits and roller bits
金刚石钻头与牙轮钻头钻井特点对比分析
Research on the simulation of the tooth slippage of the cone bit
牙轮钻头牙齿滑移量规律的仿真研究
AN APPLICATION OF ABRASIVE WATERJET INTO CUTTING OF CONE BIT
磨料水射流在切割牙轮钻头中的应用
Prediction and evaluation of systematic reliability of tricone bit
三牙轮钻头系统可靠性的预测与评估
The development and application of a new type rock bit with bearing liner structure;
镶套轴承结构牙轮钻头的开发与应用
The new-type mono-metal floating seal for roller bit
牙轮钻头用新型单金属浮动密封研究
Simulation model of drilling process of three-cone bit
三牙轮钻头破岩过程计算机仿真模型
Method of Calculating Three Cone Bit Diameter by Using Excel
用Excel实现三牙轮钻头直径计算的方法
Application of Roller Bit Combination Drilling Technology in Nappe Strata of Qingxi Oilfield
牙轮钻头复合钻进在青西推覆体地层的应用
The vertical Interaction Model of cone Bit Teeth-rock
牙轮钻头牙齿与岩石垂向互作用仿真模型
TEST STUDY OF A NEW TYPE NON-SEAL SLIDING BEARING CONE BIT
新型非密封滑动轴承牙轮钻头的试验研究
APPLICATION AND RESEACH-DEVELOPMENTOF WATER JET TECHNOLOGY IN ROCK BIT
水射流技术在牙轮钻头中的应用与研究进展
EXPERIMENTAL STUDY ON SELF EXCITED RESONANT PULSE JET NOZZLE FOR ROLLER BIT
牙轮钻头自激振荡脉冲喷嘴的实验研究
Boundary element method for stress analysis of tungsten carbide insert interface on cone bit
牙轮钻头镶齿结合面应力分析的边界元法
