Large section starting cut in top-coal caving face 综放大断面开切眼
fully mechanized longwall top coal caving face 综放工作面
Fully Mechanized Top Coal Caving Face 综采放顶煤工作面
Fully Mechanized Top-Coal Caving Face 综放工作面; 综放; 综放面
FULLY-MECHANIZED TOP-COAL CAVING FACE 综放工作面; 综放面
light supported top-coal caving face 轻放面
LONGWALL TOP-COAL CAVING FACE 综放面
Steeply inclined Longwell top-coal caving face 急倾斜长壁综放工作面
super long fully mechanized top coal caving face 超长综放工作面
Super-Length Fully-Mechanized Top-Coal Caving Face 超长综放面
top coal caving in horizontal sectional seam 水平分段放顶煤
TOP-COAL CAVING FACE 综放工作面; 放顶煤工作面
fully-mechanized face in coal seam 煤层综采面
capability of top coal caving 顶煤可放性
Caving Top Coal 放顶煤
full-mechanized top-coal caving 综放
fully machanized top coal caving 综放
fully mechanized high cutting and top coal caving mining technology 大采高综采放顶煤技术
Fully mechanized longwall top coal caving mining 综放开采