1.
Technology of 1000 meter directional borehole at large diameter for mine gas extraction
顶板大直径千米长钻孔抽采瓦斯技术
2.
Drilling, Logging, Mud-logging Managers
钻井、测井、录井处长（经理）
3.
The professor's erudition came from long years of study.
这位教授的学问来自长年累月的钻研。
4.
We pored over the sketches for a long time.
我们花了很长时间钻研素描。
5.
An experimental study of the auger bored cast-with-pressure concrete pile on soft ground
软土地区长螺旋钻孔压灌桩试验研究
6.
Construction of Bored Piles in Double wall Steel Cofferdam for the Second Changjiang River Bridge in Wuhan
武汉长江二桥双壁钢围堰钻孔桩施工
7.
Improving Growth of Street Trees by Boring the Rhizo$pheric Soil for Aeration
土壤钻孔通气法对行道树生长的改善
8.
An Analysis of the Process of Axial Vibration Drilling and Chip Length
轴向振动钻削过程及其切屑长度分析
9.
Study on the Reliability of the Auger Bored Cast-with-pressure Concrete Pile
长螺旋钻孔压灌混凝土桩可靠度研究
10.
Research on the Bearing Performance of the Super-Long and Large-Diameter Bored Pile;
超长大直径钻孔灌注桩承载性能研究
11.
A Research on the Corporate Cultural Building of the Changqing Well Construction Company;
长庆钻井总公司的企业文化建设研究
12.
Research on and Design of the Driven Section of the Long-Stroke Modular Drilling Pump;
长冲程模块钻井泵动力端研究与设计
13.
PetroChina Great Wall Drilling Logging Company Development Strategic Research
中油长城钻探测井公司发展战略研究
14.
Great Wall Drilling Company Overseas Business Tax Planning Measures
长城钻探公司海外业务税收筹划对策
15.
The Research of Employee Incentive System in Greatwall Drilling Company
长城钻探工程公司员工激励对策研究
16.
Effects of Drillstring Length on Snake Buckling Loads
斜直井内钻柱长度对蛇形屈曲的影响
17.
Application of Drilling Fluid Technology in the Long Open Well X92
X92井长裸眼井段钻井液技术措施
18.
Anti-bit balling for PDC bits of horizontal wells in Changqing gas field
长庆气田水平井PDC钻头防泥包技术