10 mineable coal seams in Inner Mongolia 内蒙十层可采煤层
behavior characteristic of coal in furnace 炉内煤粉颗粒的行为特征
Correlation of Coal Seams 煤层对比
erosion zones in coal seams 煤层冲刷带
lower group of coal seams 下组煤
Mercury in coal of China 中国煤中汞
overlying strata of upper coal seam 上位煤层覆岩
permeability of coal seams 储层渗透率
roof of coal seams 煤层顶板
stress of coal seams 煤层应力状态
Taiyuan formation coal 太原组煤
trace elements in coal of China 中国煤中微量元素
water infusion in coal seams 煤层注水
formation of coal-field in North-eastern China 东北煤田岩层
cause of formation in the river pattern 河型成因
Bitao Formation of Upper Cambrian Series 上寒武统比条组
Linxi formation of Upper Permian 上二叠统林西组
the upper member of Guantao Formation 馆陶组上段
Upper member of Eh3 核三上亚段