1.
Model Analysis on Electro-hydraulic Proportional Control for Rotary Drilling System of Engineering Geological Drilling Rig
工程地质钻机回转钻进比例控制系统的模拟分析
2.
Construction Methods for Rotary Excavating Drilling Machine for Pile Foundation of Weak Geological Layer
软弱地质层桩基旋挖钻机钻孔施工工法
3.
Research on Electro-hydraulic Proportional and Automatic Drilling System of JDD-100 City Geology Survey Drilling Rig
JDD-100型城市地质调查钻机电液比例自动钻进系统研究
4.
The geological prospecting enterprises completed a total of 5.36 million meters of drilling.
地质勘查完成机械岩心钻探工作量536万米。
5.
Research on Computer-Assistant Design System of Borehole Structure in Geological Drilling;
地质钻探孔身结构计算机设计系统的研究
6.
The Development of Oil Driller Geo-steering Wireless Moniter System
石油钻井机地质导向无线监控系统的研发
7.
IMPROVING THE RATE WHILE DRILLING DEEP,OR ULTRA DEEP WELL IN THE COMPLEX GEOLOGICAL STRUCTURE OF EAST SICHUAN
提高川东复杂地质深井超深井机械钻速的研究
8.
drill bit for mining and geological prospecting
矿山及地质勘探钻头
9.
The men dug the oil well by Boring through the ground with huge drills
工人使用巨大钻机钻透地层挖掘油井。
10.
Research on the System Design for Advance Geological Prediction in TBM Construction Tunnel Based on Drilling Machine;
基于钻机的TBM隧洞施工超前地质预报系统开发研究
11.
Difficulties of comprehensive geological logging and measures to cope with them during drilling adjustment wells using service rigs
利用修井机钻调整井地质综合录井难点及应对措施
12.
A machine in the tower gradually cuts a narrow hole down into the ground.
井架内的钻机渐渐地往地下钻出一个小洞来。
13.
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。
14.
To bore(a shaft) with a trepan.
钻用钻井机钻（矿井）
15.
machine tool, ultrasonic, for working diamond or metal carbide
钻石或金属硬质合金片加工超声机床
16.
Study on drilling quality of samba 261 drill for VCR stope in Tonglvshan
铜绿山VCR法采场Simba261钻机凿岩质量研究
17.
Specification for operation of hydrographic geological drilling and digging for water-supply
供水水文地质钻探与凿井操作规程
18.
Technical standard for boring of geotechnical investigation of buildings
建筑工程地质钻探技术标准