low coal meaning in Chinese

薄煤层

The reason of lower coal reservoir pressure in lu an coal mining area
潞安矿区煤储层压力低的原因分析
Forming differences between high and low coal rank coalbed methane reservoirs
我国高低煤阶煤层气成藏的差异性
Hydrogeological condition for coal mining of lower coal seam group in nantun coal mine
南屯煤矿下组煤开采水文地质条件
Analysis on water isolation layer conditions of taiayuan group lower coal seam mining of hebi coal mine
鹤壁矿区开采太原群下组煤的隔水层条件分析
To close mines , low coal production , adjust the structure and promote the continuous development of coal industry
关井压产调整结构促进煤炭工业持续健康发展

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