1.
Modeling and Appling of Drilling Speed of Cutting Type PDC Bit;
切削式PDC钻头钻速方程建立及其应用
2.
5.9 The penetration rate (ROP) has been 6.18 meters per hour.
机械钻速为6.18米/小时。
3.
ROP Forecast by Artificial NN
利用人工神经网络原理对钻井中钻速的预测
4.
Improvement of penetration rate with hydraulic pulsating-cavitation jet compound drilling technology
利用水力脉冲空化射流复合钻井技术提高钻速
5.
A Study on the Theory and Technology of Drilling Fluids to Increase ROP.
提高机械钻速的钻井液理论与技术研究
6.
Calculating Method and Effect on ROP of Ratio for WOB of RWD Tools
随钻扩眼工具钻压分配比的计算方法及对钻速的影响
7.
Converting gas drilling to conventional drilling within short time
气体钻井快速转换为常规钻井的钻井液技术
8.
quick spindle adjustment
(钻床) 快速主轴调整
9.
low speed high torque turbodril
低速大扭矩涡轮钻具
10.
Razor Tergum digs into the ground and digs out at another place quickly.
剃背迅速地钻进地底并在任一个地方钻出来。
11.
The Spindle System and Drills Dynamic Characters Study for High-speed Micro-drills;
高速微孔钻床主轴系统及钻头的动态特性研究
12.
Research on Bit for Efficient Drilling of Gas Drainage Borehole in Nantong Mining Area;
南桐矿区瓦斯抽放孔快速钻进钻头的研究
13.
The Application of the Fast Drilling Fluid Technology in the West of Qaidam Basin.
快速钻井钻井液技术在柴西地区的应用
14.
The flames darted into a rick of straw with lightning swiftness.
火苗象闪电一样迅速地向草垛里钻着。
15.
bit-pinching formations
钻压略重就扭矩增大转速减慢的地层
16.
SCR controlled stepless speed regulation bench drill
可控硅控制无级调速台钻
17.
They introduced a special method of high-speed drilling.
他们采用了一种高速钻探的特殊方法。
18.
He darted off the road into the bushes.
他迅速离开大街钻进了灌木丛。