1.
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
2.
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
3.
counterbore with guide
有导柱的平底扩充孔钻
4.
BHA directional behavior
底部钻具组合定向特性
5.
multistabilizer BHA
多稳定器底部钻具组合
6.
and are fitted with a cutting bit at the bottom.
它的底部装有钻头。
7.
Drill three holes in the floor/base plate for anchoring the leg.
在地面/底板上为锚固支柱打钻三个孔。
8.
Study on seismic behavior of fringe frame with rectangle columns at the bottom and specially-shaped columns at upper stories
底部矩形柱上部异形柱边框架抗震研究
9.
Nonliner Analysis of Special-Shaped R.C. Frame Structure with Bottom Rectangle Columns;
底部矩形柱上部异形柱框架非线性分析
10.
blank-casing bit
套管底部装用的环状钻头坯
11.
BHA finite element model
底部钻具组合有限元模式
12.
BHA's relative rigidity
底部钻具组合的相对刚度
13.
Under-drilling is calculated on the maximum theoretical burden.
底部钻凿是按最大理论抵抗线计算。
14.
Research on Mechanical Properties of Special-Shaped Columns Structures with Reduced Columns at the Bottom and Transfer Stories;
底部抽柱带转换层的异形柱结构受力性能研究
15.
the cutting part of a drill; usually pointed and threaded and is replaceable in a brace or bitstock or drill press.
钻机的切割部分；通常是尖头的有螺旋状图案并且可以更换，用在钻柱钻柄或钻床上。
16.
commonly the lowest molding at the base of a column.
通常在一根柱子的底部的最低塑造物。
17.
A post that supports a handrail at the bottom or at the landing of a staircase.
楼梯柱在楼梯底部支撑扶手的地方
18.
Experimental and Theoretic Study on Seismic Behavior of Special-Shaped Column Frame with Bottom Rectangle Columns;
底部矩形柱上部异形柱框架抗震性能试验及理论研究