1.
OPTIMIZATION OF LATERAL FORCE BALANCE OF PDC BITS BASED ON ANT COLONY PARTICLE SWARM HYBRID ALGORITHM
基于蚁群粒子群混合算法的PDC钻头侧向力平衡优化
2.
bit's directional cutting ability
钻头的定向切削能力
3.
medium-radius lateral drilling
中曲率半径侧向钻井
4.
drill(ing) head
钻头; 主轴头; 钻床床头箱; 钻削动力头;钻头头部, 钎头
5.
He heaved another sigh, screwed his head into the pillow.
他又叹口气，头向枕头里钻钻。
6.
Parameter Measurement and Transmission of the Drill Bit for Horizontal Directional Drilling
水平定向钻进钻头信息的测量与传输
7.
Application of Bit Water Way in HDD
水平定向钻进扩孔钻头水口应用分析
8.
Research on Dynamics of Driver & Hydraulic Driving System of Z6500 HDD Power Pack
Z6500水平定向钻机动力头及其液压驱动系统动力学研究
9.
The bird cocked its head to/on one side.
鸟把头斜向[到]一侧.
10.
engine mud sill
钻机动力机下纵向底梁
11.
Superior( Cephalic, Cranial, Above) Toward the head or upper part of the body.
上(头侧，颅侧，上方)指向头或身体上部的方位。
12.
unit-type drill head
组合钻床钻头, 标准钻头
13.
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
14.
APPLICATION OF SIDETRACKING USING CASING SECTION MILL IN BURIED HILL RESERVOIR
套管段铣定向侧钻技术在潜山油藏的应用
15.
Research on the Breakage Mechanism of Micro-drills and Drilling Forces Online Monitoring
微钻头折断机理及钻削力在线监测的研究
16.
Acoustic Transmission and Measurement Method for Near-bit Dynamic Force Signal of Bottom Drill String
底部钻柱近钻头动态力测量及声传输方法
17.
Longitudinal-cracking Failure Analysis of Box
φ139.7mm钻杆内螺纹接头纵向开裂失效分析
18.
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