坚硬顶板、软煤、软底大倾角较薄厚煤层综放工作面的开采实践

坚硬顶板、软煤、软底大倾角较薄厚煤层综放工作面的开采实践的英文翻译

基本释义

• Mining Practice in Fully Mechanized Caving Coal Face of Hard Roof, Soft Coal, Soft Bottom, and Large Inclination Thick Coal Bed