1.
A Technical Investigation on Drilling in Australia and the Technical Service of Wire-line Coring Percussive-rotary Drilling
澳大利亚钻探技术考察与绳索取心冲击回转钻进技术服务
2.
Application of Percussion Drill and Rotary Drill in the Construction of Dock Rock-socketed Oblique Piles
冲击钻机与回转钻机在码头嵌岩斜桩施工中的应用
3.
Model Analysis on Electro-hydraulic Proportional Control for Rotary Drilling System of Engineering Geological Drilling Rig
工程地质钻机回转钻进比例控制系统的模拟分析
4.
Application of the Positive Cycle Mechanical Rotary Boring Grout Pile on the Pile Construction of the Pebble Bed
正循环机械回转钻孔灌注桩在卵石层中的应用
5.
Application of the drilling method of anti-circulation and rotation in building concrete cutoff wall
反循环回转钻法造混凝土防渗墙在水利工程中的应用
6.
Structural Design and Mechanism Study on Water-saving Rotary Percussive Devices;
节水型回转冲击钻具结构设计与钻进机理研究
7.
Research on Load Self-adapting of Rotating System in Measuring Drill
随钻测量钻机回转系统负载自适应研究
8.
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
9.
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
10.
The Development of CHF-20 Percussive-Rotary Reverse-circulation Drill;
CHF-20型冲击—回转反循环工程钻机的研制
11.
Researches on Rotary Machine of Drilling and Grinding Carbon Fiber Reinforce Composite Component;
回转类碳纤维复合材料构件钻磨机床的研究
12.
The Pore-forming Mechanism Study of Cam Bit on Percussive-Rotary Extruding DTH Drilling
凸轮型冲击回转挤压钻头成孔机理的研究
13.
Contact Analysis of Gear Transmission in Rotating Reducer of Blasthole Drills based on ANSYS
基于ANSYS的牙轮钻机回转机构齿轮接触分析
14.
kelly for well-drilling machiens
旋转钻孔,钻井机用
15.
easing the bit in
钻头轻压慢转钻进地层
16.
A device, such as a drill, that operates with a jerking or jolting motion.
振动器，推拉器一种像钻孔机的设备，运转时来回拉动和推动
17.
Experiment and Analysis Study on Percussion Device of CHF-20 Percussion and Rotary Reverse Circulation Drilling Rig;
CHF-20型冲击-回转反循环工程钻机冲击机构试验及分析研究
18.
Research on Rotary Positioning System of the Rotary Drill Rig with Load-sensing Properties
具有负载敏感特性的旋挖钻机回转定位系统的研究