1.
Modeling and Simulation of Rotating Hydraulic System in Down-the-Hole Drill
潜孔钻机回转液压系统的建模与仿真
2.
The efficiency study of traveling hydraulic drive about the down-the-hole drill
潜孔钻机履带行驶液压驱动系统效率研究
3.
Emulation of New Type Forward Pressure Control System for DTH Drill Based on AMESim
基于AMESim潜孔钻机推进力控制系统研究与仿真分析
4.
Dynamic simulation and experiment study about the rotating hydraulic system of down-the-hole drill based on AMEsim
采用AMEsim的潜孔钻机回转液压系统的动态仿真与试验研究
5.
The sorker was drilling.
此工人在用钻孔机钻孔。
6.
Study of Non-Dig Oscillate-Drilling DTH Orientation Device Applied on Hard Rock Stratum;
硬岩非开挖钻进摆动式潜孔锤定向机构的研究
7.
Penetration Mechanism of DTH Percussion Compact Drilling and Experimental Research on Compact Bit;
潜孔锤冲击挤密钻进机理及挤密钻头的设计与实验研究
8.
kelly for well-drilling machiens
旋转钻孔,钻井机用
9.
Development of core drill equipment for combined underwater drill rammer of rock built-in pile hole
嵌岩桩孔组合潜孔锤取心钻具的研制
10.
On application of DTH drill in drilling pile construction in karst developing areas
潜孔钻在岩溶发育地区钻孔桩施工中的应用
11.
Research on Coring Mechanism of Reverse Circulation Continuous Coring Drilling of Hollow DTH;
贯通式潜孔锤反循环连续取心钻进取心机理研究
12.
Theoretical Analysis and Experimental Research of Flow Field by DTH Hammer Drilling with Simultaneous Casing Tool of JSL-30 Drill Rig;
基于JSL-30型砾石钻机潜孔锤同心跟管钻具的流场理论分析及试验研究
13.
Using a drill, he bore a hole through the wood.
他用钻孔机在木头上钻了一个孔。
14.
A Brief Explanation of Air Actuated DTH Hammer Drilling Efficiency
空气潜孔锤钻进是提高钻进效率的有效途径
15.
Downhole drill hammers and drills
GB/T13344-1992潜孔冲击器和钻头
16.
Study on DTH with Self-propelled Round Bit and Its Simulation Analysis;
钻头自回转型潜孔锤研究及仿真分析
17.
Neural Network Method in the Penetration Rate Prediction of Percussive Drilling
利用神经网络法预测风动潜孔锤钻速
18.
Research of Technology Problem with Pneumatic Downhole Hammer Core Drilling
气动潜孔锤取心钻进工艺问题的研究