1.
Finite Elemtnt Analysis of 3-D Elastoplastic for DTH Bits
潜孔钻头本体三维弹塑性有限元分析
2.
Simulation analysis on the downhole bit based on LS-D YNA and optimization of tooth distribution
基于LS-DYNA的潜孔钻头仿真分析与布齿优化设计
3.
Downhole drill hammers and drills
GB/T13344-1992潜孔冲击器和钻头
4.
Study on DTH with Self-propelled Round Bit and Its Simulation Analysis;
钻头自回转型潜孔锤研究及仿真分析
5.
Penetration Mechanism of DTH Percussion Compact Drilling and Experimental Research on Compact Bit;
潜孔锤冲击挤密钻进机理及挤密钻头的设计与实验研究
6.
Experimental and Drill Bit Flow Field Analyze of Run-through DTH Reverse Circulation Drilling Technique;
贯通式潜孔锤反循环钻进技术试验及钻头流场分析
7.
A tool used for drilling.
钻头用于钻孔的工具
8.
A pointed and threaded tool for drilling and boring that is secured in a brace, bitstock, or drill press.
钻头曲柄、钻柄或钻床之上用于钻孔的尖头工具
9.
diamond-particle bit
潜铸型细粒金刚石钻头
10.
Using a drill, he bore a hole through the wood.
他用钻孔机在木头上钻了一个孔。
11.
Drilling is cutting a hole with a drill.
钻削就是用钻头钻一个孔。
12.
Development of core drill equipment for combined underwater drill rammer of rock built-in pile hole
嵌岩桩孔组合潜孔锤取心钻具的研制
13.
On application of DTH drill in drilling pile construction in karst developing areas
潜孔钻在岩溶发育地区钻孔桩施工中的应用
14.
A needle-shaped drill for boring holes in rock or masonry.
钻头，钻石器，钻孔器用于在岩石或砖石上钻孔的针形钻
15.
Many of the stones have holes drilled through them.
许多石头钱都钻有孔。
16.
To drive(a screw or bolt)into a countersink.
将钻或螺栓置入埋头孔
17.
bolt or cotter-pin drill
螺栓或开尾销孔钻头
18.
To make a hole in (a hard material) with a drill
用钻头在(硬材料)上打孔.