1.
Discussion on Nos.4 and 9 Coal Seams Gas Distribution Pattern in Guanzhai Minefield,Qianxi County
黔西县官寨井田4、9号煤层瓦斯分布规律探讨
2.
The Hydrogeological Conditions of the Strata Under No.9 Coal Seam of Zhaigou Coal Field
寨沟井田二水平9号煤层底部岩层水文地质条件分析究与应用
3.
The Design of Bolt-rope Support in No.9 Seam Entries
9号煤半煤岩巷道锚杆锚索支护设计浅析
4.
Nos.9 and 16 Coal Seams Anthracographic Features and Sulfur in Coal
黔北煤田花秋勘探区9、16号煤煤相特征与煤中硫
5.
Research on Support of 9~# Difficult Mining Coal Seam of Fully Mechanized Mining Tunnel in Ximing Coal Mine
西铭矿9~#难采煤层综采巷道支护研究
6.
Analysis on Stability of Coal Pillar in Goaf Area of No.11 Seam in Tangshangou Mine
唐山沟煤矿11号煤层采空区煤柱稳定性分析
7.
Operation Practice of Full Dry Bag Gas Dedusting at No.9 BF of Xingang
新钢9号高炉全干式布袋煤气除尘运行实践
8.
Application Performance Comparison between Two Type Hydraulic Powered Supports in No.9 Seam Mining of Xingtai Mining Area
邢台矿区开采9号煤2种架型的使用性能比较
9.
Yes, I think the ninth. The ninth of...
对，我想是9号。几月9号？
10.
Reconstruction of Coal Mining Method for Shallow Mining Depth Seam in Nalinmiao No.2 Mine
纳林庙二号井浅埋煤层条件下采煤方法改造
11.
Geological Hosting Characteristic Research on No.2 Coal Seam,Xiayukou Coalmine
下峪口煤矿2号煤层赋存地质特征研究
12.
Research on the harnessing technology of spontaneous combustion in XuanDong coal
宣东二号煤矿煤层自然发火治理技术研究
13.
A Study on No.6 Coal Seam Coal Quality Characteristics in Ulan Nur Minefield, Inner Mongolia
内蒙古乌兰诺尔井田6号煤层煤质特征研究
14.
The researching methods of Shanxi Province Hedong Coal mingzhu one for correlation of coal seams
山西河东煤田明珠一号煤层对比的研究方法
15.
The Gaussian curvature of No.3 coal seam in Qinshui basin is calculated.
计算了沁水盆地3号煤层的高斯曲率。
16.
Talking about the All-bolt Tailing-in Technique of Reserved Empty Roadway in No.2 Seam
浅谈2号煤层预留空巷全锚收尾技术
17.
According to the criteria, natural fracture zones of No.3 coal seam are divided into four grades and then the permeability distribution of No.3 coal seam is preestimated.
依据该标准将3号煤层天然裂隙划分为4级发育区，进而预测出3号煤层渗透率的分布概况。
18.
Development Conditions for Coalseam 13 of Upper Shihezi Formation in Permian of Series Huainan Coalfield
淮南煤田二叠系上石盒子组13号煤层的形成条件