1.
Minimum Age (underground work) Convention, 1965
（井下工作）最低年龄公约
2.
Convention concerning the Minimum Age for Admission to Employment Underground in Mines
矿山井下工作最低许可年龄公约
3.
downhole performance
钻具等设备的井下工作性能
4.
Discussion on Downhole Tool to Improve Drilling Maneuverability in Case of Narrow Density Windows
提高窄密度窗口钻井可操作性的井下工具探讨
5.
How to Make a Success of Supervising Downhole Operation Projects in the New Situation
浅谈新形势下如何做好井下作业工程监督工作
6.
Reverse Construction Technology of Deep and Circular Well Under Asymmetry Load
非对称荷载下深圆井逆作法施工技术
7.
Power Supply Plan for Thin-layers in Fully-mechanized Mining
煤矿井下薄煤层综采工作面供电方案
8.
work - over equipment for oil and gas wells
油气井井下作业设备
9.
Relationship Between Job Stress and Health Among The Coal Mine Well Descends Workers;
煤矿井下工人工作应激情况及其与健康的关系
10.
Deepening Management Work of Danger Source in the Pit And All-aroundly Constructing Intrinsic Safety Mines
深化井下危险源管理工作 全面建设本质安全型矿井
11.
Water Blocking Technology by Grouting in Alluvial Layer Vertical Shaft Working Face Under Complex Geological Conditions
复杂条件下立井井筒工作面冲积层预注浆堵水技术
12.
The State shall take special protective measures for miners working in underground coal mines.
国家对煤矿井下作业的职工采取特殊保护措施。
13.
Discussion on Clean Production for Downhole Operation
浅谈清洁生产在井下作业施工中的应用
14.
System Simulation and Working-mechanism Research on Differential Underground Supercharger
差动式井下增压器的工作机理研究及系统仿真
15.
open caisson method in underground construction
地下工程沉井法施工
16.
Investigation and Analysis of a Plateau Underground Mine(?) Working Environment and Workers
某高原地下矿山作业环境及井下工人的调查分析
17.
Applications ofTop-down Construction of Basement Terrace in Heapstead to Parallel Working of Mine Construction and Civil Engineering
井口房地下室平台“逆作法”施工在矿建、土建平行作业中的应用
18.
Underground Work Personnel's Administrative System Operation Principle and Application of the Colliery
煤矿井下作业人员管理系统工作原理及应用探讨