Evaluation on the varieties and structures of wire rope used on heavy-duty drilling rig;
重型钻机提升用钢丝绳的品种与结构评析
Techno-economic analysis of selection of drill types for cast-in-place piles;
混凝土灌注桩钻机类型选择经济技术分析
It sets good records on drilling cycle, net drilling time and average ROP in the same kind of horizontal wells.
该井的完成 ,创同类型水平井钻井周期、纯钻时间、平均机械钻速的国内好成绩。
The Dynamic Analysis on Drilling System of ZY-200 Type Rotary Drilling Rig;
ZY-200型旋挖钻机钻挖系统动力学分析
The Extend Function of Z3040 Radial Drilling Machine--the Drilling-Milling Body
Z3040型摇臂钻床扩展功能——钻铣机构
The Finite Element Analysis on Support Frame Machine of NR22 Type Rotary Drilling Rig;
NR22型旋挖钻机钻挖支撑机构有限元分析
This new model of drilling machine can bore through solid rock ten metres deep.
这台新型钻机能钻透十米厚的坚固岩石。
For connecting the different type of spindle of drill with the drill bits.
用于不同型号钻机的主轴与钻头的联接。
Structural Design and Mechanism Study on Water-saving Rotary Percussive Devices;
节水型回转冲击钻具结构设计与钻进机理研究
Dynamic Analysis on Tunneling Support System of the ZY-220 Rotary Drilling Rig;
ZY-220型旋挖钻机钻挖支撑系统动力分析
Study on Structure Optimization of the Derrick of JYD-1000 All-hydraulic Core Drilling Rig;
JYD-1000型全液压岩芯钻机钻塔结构优化研究
Application of the XY-1 type core drilling machine to horizontal drilling
XY-1型岩芯钻机在水平钻孔施工中的应用
To bore(a shaft) with a trepan.
钻用钻井机钻（矿井）
Production of electrical tools, such as electric drills impact, angle angle grinder, saw, electric drill and curves.
生产各类电动工具，如冲击电钻，角向磨光机、电钻和曲线锯等。
Hardypick drifting machine
哈迪皮克型平巷电钻机组
Status and. updating of Model Daqing-130 drilling rigs
大庆-130型钻机的现状及改造更新
The Research of New Type Drilling Machine Based on Optimization Design of Reliability;
基于可靠性最优化的新型钻机的研究
The Finite Element Analysis of Mast of NR22 Rotary Drilling Rig;
NR22型旋挖钻机桅杆有限元分析
Properties Research on the Hydraulic Tools of the New Type of Water-saving Drilling Technology;
新型节水钻探技术水力机械特性研究
