1.
When drilling deep holes, the feed movement should be released from time to time.
在钻深孔的时候，有时必须放松进给运动。
2.
Drilling 50 yards deep,
钻孔至50码深处，
3.
guide twist drill
有导径的深孔麻花钻
4.
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
5.
Design and Realization of the Monitoring System in Deep-Sea Drilling Machine
深海中深孔钻机监控系统设计与实现
6.
The first choice is to dig our heads and oil drills deeper into the ground.
第1种选择就是用石油钻孔机钻至更深的地底。
7.
Supporting the use of impact drilling electric drill. Drilling, hole spacing with hole depth should meet the design requirements.
（1）钻孔使用配套冲击电钻.钻孔时,孔洞间距与孔洞深度应满足设计要求.
8.
high efficiency drilling system for small and deep hole
高效小直径深孔钻削系统
9.
STEP HOLE DRILLING METHOD FOR MEASURING PLANE RESIDUAL STRESSES IN DEEP LAYER
钻阶梯形孔法测量深层平面残余应力
10.
Study on High Speed Drilling in Deep 38CrMoAl Steel Tube;
38CrMoAl料筒高速深孔钻进研究
11.
The CAD and research of drill bit escape of clips for the deep hole processing drill
深孔加工钻头排屑研究及CAD设计
12.
Stability and Bifurcation of the Drilling Shaft System in Processing Deep Hole Based on Boring and Trepanning Association
BTA深孔加工钻杆系统的稳定性及分岔
13.
Experimental research on the system performance in near-dry deep hole drilling
亚干式深孔钻削系统性能的试验研究
14.
The application of combination of cast-in-place bored piles and deep-layered agitating pile
钻孔灌注桩和深层搅拌桩组合的应用
15.
An experimental study of drilling small and deep blind holes with an abrasive water jet
磨料水射流钻削深小盲孔的试验研究
16.
The Application of Deep Pore Loosening Control Blasting in Bridge Bored Pile Construction
深孔松动控制爆破在桥梁钻孔桩施工中的应用
17.
CONSTRUCTION SCHEDULE ADVANCEMENT OF DRILLING PILE BY DEEP HOLE WATER PRESSURE BLASTING
采取深孔水压爆破提高钻孔桩施工进度
18.
The Construction Techniques for the Deep-water and Large Aperture Drilled Piles of Hutiaomen Bridge
虎跳门特大桥深水大孔径钻孔桩施工工艺