1.
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
2.
Structural Analysis and Optimum Design of Downhole Motor Based on CAE;
基于CAE的螺杆钻具结构分析及优化设计
3.
Applacation of CFD on designing optimizing of fidelity corling drill structure
CFD在保真取心钻具结构优化设计中的应用
4.
Structure security analysis of cuttings falling-prevention tool for gas drilling
气体钻井防沉屑工具结构安全性分析
5.
Study on Structure of Reaming While Drilling Tools and Design of Suitable Bottom-Hole Assembly;
随钻扩眼工具结构及与之相匹配的钻具组合设计方法研究
6.
Self-Rescue Device Development of Rodless Drilling Unit and Structural Analysis of Guiding & Supporting Device
无钻杆钻具自救装置研制及导向撑压器结构分析
7.
Structural analysis and improved design for transmission shaft of screw-drilling device
螺杆钻具传动轴的结构分析与改进设计
8.
Design of a Rotating Blow-out Preventer(RBOP) with a New Sealing Structure
一种新型钻具密封结构的旋转防喷器的设计研究
9.
Structural dynamic analysis on ultrasonic driller and drilling experiments
超声钻结构动力分析与钻削实验研究
10.
New technology and essentials in die design for upsetting drill key on a universal press was introduced. Then a practical die construction was presented.
介绍了在通用冲床上镦锻钻头钥匙的新工艺和模具设计要点 ,并给出了实用的模具结构
11.
A selfmade apparatus called" fish scalelike grinding head" is employed to solve the problem, and its operation and structure are introduced.
介绍该厂用自制鱼鳞磨头解决轴孔在钻床上扩孔120μ的具体操作方法及鱼鳞磨头的结构。
12.
ZW4006 type miniature bench drills is light weight, simple structure and easy for operation. It is ideal tool for homework and handcraft.
ZW4006微型台钻重量轻、结构简单、使用方便，是家庭、手工作坊等用户的理想工具。
13.
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
14.
Any of numerous hand tools for boring holes.
钻孔工具，手钻钻孔用的手持工具
15.
The Structural Principle and Application Practice of Coal Auger
螺旋钻采煤机的结构原理和使用实践
16.
PDC Variable Diameter Drilling Bit Mechanical Characteristics and Structural Design;
PDC变径钻头力学特性及结构设计
17.
The development and application of a new type rock bit with bearing liner structure;
镶套轴承结构牙轮钻头的开发与应用
18.
Synthetic Method of “Resilience-Augercore” to Detect the Intensity of Concrete;
“回弹-钻芯”综合法检测结构混凝土强度