复杂难采高瓦斯煤层简易放顶煤开采综合防灭火技术研究

复杂难采高瓦斯煤层简易放顶煤开采综合防灭火技术研究的英文翻译

基本释义

• Study on Comprehensive Fire Preventing and Extinguishing Technique of Simple Cutting Top Coal Dropping of Complicated and Difficult Cutting Coal Bed with High Gas