1.
Design and Application of large Diameter Bit in Rock and Soil Drilling
岩土钻探工程大口径钻头设计与应用
2.
Study on drill bit for large diameter core drilling of deep hole in hard rock
硬岩深孔大口径取芯钻进的钻头研究
3.
Bit Design for Main Pier Bored Piles of Donghai Bridge
东海大桥主墩大直径钻孔灌注桩钻头设计
4.
Application of Wireless-while-drilling Technology on Large Diameter Directional Hole
无线随钻技术在大口径定向工程钻孔中的应用
5.
large-orifice sprinkler system
大口径洒水喷头系统
6.
The Research of Producing and Test of Jointing Intensity of Small Caliber PDC Bit;
小口径PDC钻头制造与焊接强度检测研究
7.
Study on Construction Platform Structure Design of Water Surface Large Diameter Bored Pile;
水上大口径钻孔灌注桩施工平台设计研究
8.
Horizontally Directional Drilling Engineering of Big Inch Pipeline
论大口径管道水平定向钻穿越施工技术
9.
a small bit that drills a first hole to guide a larger drill.
钻凿初洞来导引大钻头的一种小钻头。
10.
He heaved another sigh, screwed his head into the pillow.
他又叹口气，头向枕头里钻钻。
11.
Discussion on friction head loss calculation for large diameter PCCP
大口径PCCP管道沿程水头损失计算探讨
12.
Influence of Drill's Edge Preparation on Drilling of 42CrMo
钻头刃口处理对钻削加工42CrMo的影响
13.
Application of Bit Water Way in HDD
水平定向钻进扩孔钻头水口应用分析
14.
Research on the Cutting Performance of the Horniness Alloy Drill with Larger Length to Dirmeter
大长径比整体硬质合金深孔钻头的切削性能分析
15.
APPLICATION OF BIG BORE REVERSE-CIRCULATION CORING CABLE DRILLING TO CAVERN OF LIMESTONE
大口径冲击反循环钻进方法在岩溶地层中的应用
16.
Analysis and treatment on pile bore checking collapse accidents of large diameter bored perfusion pile
大口径钻孔扩底灌注桩在孔形检测时的塌孔分析及处理
17.
Technology of Big Caliber Boring Pouring Pile;
大口径钻孔灌注桩施工——土建类专业建筑施工新技术
18.
Most drilling in metal is done with a twist drill.
大多数金属钻孔用的是麻花钻头。