机译:天辰矿薄煤层综采单支,旋转,刀柄,不规则形,双工作面组合调整开采技术
Shandong Institute of Business and Technology, Yantai 264005, China;
Shandong Institute of Business and Technology, Yantai 264005, China;
Shandong Institute of Business and Technology, Yantai 264005, China;
mining of thin coal seam, double unit face, rotational and adjusting mining;