1.
The Micromation of Micro Horizontal Directional Drill s Drive Equipment and Energy-saving Study;
微型定向钻动力装置微型化与节能研究
2.
Application in Angles Measurement for Directional Drilling with Micromachined Polysilicon Accelerometers
微硅加速度计在定向钻进角度测量中的应用
3.
BHA directional behavior
底部钻具组合定向特性
4.
bit's directional cutting ability
钻头的定向切削能力
5.
Parameter Measurement and Transmission of the Drill Bit for Horizontal Directional Drilling
水平定向钻进钻头信息的测量与传输
6.
Study on axial vibration drilling to improve positioning accuracy
轴向振动钻削提高钻孔定位精度研究
7.
Application of Bit Water Way in HDD
水平定向钻进扩孔钻头水口应用分析
8.
Study on Directional/Guided Drilling of Trenchless in Fluvial Facies Stratum;
典型河相地层条件下非开挖定（导）向钻进施工技术研究
9.
Research on the Technology of Horizontal Directional Drilling of Oil and Gas Pipeline Crossing Large and Medium-sized River
油气管道水平定向钻穿越大中型河流技术的研究
10.
Design of directional coupling ultracompact multichannel beam splitters
定向耦合型超微多路光分束器的设计
11.
Research on MWD Surveying Method and Locating Technique of Horizontal Directional Drilling;
水平定向钻进随钻测量方法及定位技术研究
12.
A novel design of miniaturized branch-line coupler based on microwave communication
基于微波通信的新型小型化定向耦合器的设计
13.
Research on Direction Control Techology of Auger Drill Miner Drill
螺旋钻采煤机钻具定向控制技术的研究
14.
Research on the Drill Pipe Transportation Manipulator of Horizontal Directional Driller and the Control System
水平定向钻机钻杆输送机械手及控制系统研究
15.
Research of Key Technology with Drilling Stem Fixed with Cable in Directional Drilling under Coal Mine
煤矿井下定向钻进通缆钻杆关键技术研究
16.
Application of Wireless-while-drilling Technology on Large Diameter Directional Hole
无线随钻技术在大口径定向工程钻孔中的应用
17.
Research and design of a measurement-while-drilling system for horizontal directional drilling
水平定向钻进随钻测量系统研究与设计*
18.
The measurement while drilling technology in nearly horizontal directional drilling in coal mines
煤矿井下近水平定向钻进中的随钻测量技术