保护层工作面
coal mining face in protected seam
表面工作温度
surface working temperature
不等长工作面
unequal length coal mining face
不规格综采工作面
irregular fully-mechanized face
不规则工作面
abnormal coal mining face
采掘工作面
mining and tunneling face
采煤工作面
mining face
Coal mining working face
coal face
coal working face
working face
working surface
coal excavation working face
coal recovery face
coal wall
Face
COALFACE
残采孤岛工作面
isolated working face of residual mining