1.
Analysis of the Nonlinear Multi-contact Frictional Drag of Drill String Based on Statistical Learning
基于统计学习的非线性多向接触钻柱摩阻分析
2.
Analysis of Frictional Effect on the Drill Stem Stability in Horizontal Wells
考虑摩擦时水平井钻柱的稳定性分析
3.
EXPERIMENTAL RESEARCH ON NEGATIVE SKIN FRICTION OF LARGE-DIAMETER BORED PILES
大直径钻孔灌注桩负摩阻力试验研究
4.
Effect of Roughness of Bore Wall on Side Friction Resistance of Bored Pile
孔壁粗糙度对钻孔灌注桩侧摩阻力的影响
5.
Lateral Friction Test and Amend Calculation of Bored Grouting Pile
钻孔灌注桩侧摩阻力试验研究及修正计算
6.
In drilling high angle deviated holes, friction is the main factor affecting the effective WOB.
在大斜度定向井钻井过程中，摩擦阻力是影响有效钻压的主要因素。
7.
The Drag and Friction of Completion String in Horizontal Well-Analysis and Prediction
水平井完井管柱受力分析与摩阻预测方法
8.
A Study of Multi-Post Strain Transducer of Friction and the Measurement of the Friction along the Pile Side
多柱应变式摩擦力传感器研究与桩侧摩阻力测定
9.
Frequency-dependent friction model for consecutive pulse signal of drilling fluid transmitting in borehole
井筒内钻井液连续脉冲信号传输频率相关摩阻模型
10.
Study on Dynamic Characteristics and Failure Mechanism of Drill String in Air Drilling
气体钻井钻柱动力学特性及钻柱失效机理研究
11.
counterbore with guide
有导柱的平底扩充孔钻
12.
bottom supporting drilling platform
定柱沉垫式钻井平台
13.
new series vertical drilling machines with square colum
新系列方柱立式钻床
14.
cone type roller bearing rock bit
滚柱轴承锥形牙轮钻头
15.
ANALYSING DYNAMIC CHARACTERISTICS OF DRILLING STRING EDDY OF INSIDE CONTAINING DRILL FLUID
内含钻井液的钻柱涡动动力特性分析
16.
frictional soil
内摩擦阻力大的土壤
17.
head of fluid frictinal loss
流体摩擦阻力损失压头
18.
motorists hung up in traffic.
受阻于交通的摩托车手