1) No.4 coal seam
四层煤
1.
The relationship of Tertiary groundwater and mining No.4 coal seam in Huafeng Coal Mine;
华丰煤矿第三系砾岩水与开采四层煤关系
4) coal bed
煤床，煤层
5) coal bed
煤层
1.
The distribution and exploration implications of coal beds of Pinghu Formation,Paleologene in Xihu Sag;
西湖凹陷古近系平湖组煤层分布及油气意义
2.
Possible existence of gas hydrate in coal bed;
煤层存在瓦斯水合物的可能性
3.
Controlling effect of the fold neutral plane on coal bed;
褶皱中和面对煤层的控制性研究
6) coal seams
煤层
1.
The characters of coal seams of Guanzhai Coal Mine was introduced in the paper.
简述了官寨井田含煤层特征,分析了井田内2号、4号、9号煤层的煤质特征及其变化规律,指出了上述3层煤的主要用途。
2.
There are many coal seams, the wide coalseams distribution area and the better reserving condition in Jixi basin.
鸡西盆地煤层多、煤层气储层分布广,储集条件较好。
3.
3 coal seams, forecasted the distribution of the small-scale structure of the expanding area in No.
煤系中小型地质构造的发育与煤层的厚度以及砂体、泥岩分布特征有密切的关系。
补充资料：高炉喷煤粉设施多层钢框架(上海宝山钢铁总厂3号高炉)
高炉喷煤粉设施多层钢框架(上海宝山钢铁总厂3号高炉)
熬 高炉喷煤粉设施多层钢框架(上海宝山钢铁总厂3号高炉)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条