1.
The new-type of hose pulsating pump is used for underground face draining and sump cleaning.
采用新型软管壁外脉动泵进行井下工作面排水及水仓清理。
2.
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
3.
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
4.
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
5.
Minimum Age (underground work) Convention, 1965
（井下工作）最低年龄公约
6.
Theoretical and Applied Study on the Strip-Filling Mining Technology Using Cementing Gangue in Long-Wall Face of Coal Mine
井下长壁工作面矸石胶结条带充填开采的理论与应用研究
7.
Discussion on Installation Mode of Methane Sensor in Cutting Face with Special Arrangement of Coal Mine Underground
煤矿井下特殊布置采掘工作面甲烷传感器设置方式的探讨
8.
Research and Application of Face Beforehand Grouting Intercept Water Technology in Shaft
立井井筒工作面预注浆堵水技术的研究与应用
9.
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
10.
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
11.
Cause Analysis of Water Bursting on 27080 Face in East of Caoyao Coal Mine
曹窑东井27080工作面突水成因分析
12.
Brief Talking about Grouting and Drilling Construction Process of Sealing Vertical Crack Sub-sealing at Vertical Shaft Face;
浅谈立井井筒工作面竖向裂隙封底打钻注浆施工工艺
13.
(6) having an actually measured surface and underground engineering comparison drawing, a mining and excavation plan and a ventilation system drawing;
（六）有实测的井上、井下工程对照图、采掘工程平面图、通风系统图；
14.
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
15.
downhole performance
钻具等设备的井下工作性能
16.
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
17.
work - over equipment for oil and gas wells
油气井井下作业设备
18.
Study on Ground Movement and Deformation of 90102 and 90103 Working Face of AnTaiBao Coal Mine
安太堡井工矿90102、90103工作面地表移动规律研究