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.
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
3.
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
4.
easing the bit in
钻头轻压慢转钻进地层
5.
Design and Improvement of Back Reamer in Directional Drilling Non-excavation Pipe Laying Construction
导向钻进非开挖铺管施工扩回钻头的设计改进
6.
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
7.
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
8.
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
9.
Drilling is performed with a rotating tool called a drill.
钻孔是用一个称为“钻头”的旋转刀具进行的。
10.
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
11.
drilling machine, rotary, self-propelled, for oil or gas
旋转式钻机,自动推进式,油田或气田用
12.
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
13.
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
14.
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
15.
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
16.
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
17.
As the diamond tip of the drill revolves, it is lubricated by mud.
在钻机的金刚钻头旋转的时候，泥浆便进行了润滑。
18.
He came back to the tent very late and crept in as silently as he could.
他很晚回到帐篷，尽可能不出声地钻了进来。