1.
BHA directional behavior
底部钻具组合定向特性
2.
multistabilizer BHA
多稳定器底部钻具组合
3.
BHA finite element model
底部钻具组合有限元模式
4.
BHA's relative rigidity
底部钻具组合的相对刚度
5.
semipacked bottom-hole assembly
半封隔井底钻具组合
6.
three-dimensional bottomhole assembly model
三维井底钻具组合模式
7.
weight-responsive bottom-assembly
对钻压敏感的井底钻具组合
8.
and are fitted with a cutting bit at the bottom.
它的底部装有钻头。
9.
stiff bottom hole hook up
刚性的下部钻具组合
10.
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
11.
blank-casing bit
套管底部装用的环状钻头坯
12.
Under-drilling is calculated on the maximum theoretical burden.
底部钻凿是按最大理论抵抗线计算。
13.
STUDY ON THE INFLUENCE OF ABNORMAL WELL BORE ON BOTTOM HOLE ASSEMBLY STRESS IN GAS DRILLING
非正常井眼对气体钻井下部钻具受力影响研究
14.
Design of Annular Slot Cutting Tool Used in Rock Stress Measurement with Borehole-wall Stress Relief Method
钻孔局部壁面应力解除切割工具设计
15.
The old worker emerged from under the car, his hands dirty with machine oil.
老工人从小车底部钻了出来，他的手沾满了机油。
16.
Propagation of water wave over a periodically perforated bottom and the band structure
水波在周期性钻孔底部结构中的传播及其能带
17.
Measurement Method and Experimental Research on Dynamic Force Behavior of Bottom Drill String
底部钻柱动态力学特性测量方法与实验研究
18.
tap(ping) drill
螺丝孔钻，螺丝底孔钻