特厚极软煤层放顶煤工作面防片帮、漏顶技术的研究

特厚极软煤层放顶煤工作面防片帮、漏顶技术的研究的英文翻译

基本释义

• Study on Technology of Preventing Collapse of Coal Wall and Roof Leakage in Light Supports Top-coal Caving Mining Face with Extra-thick Soft Seam