coal face
短语词组
- first coal mining face 首採工作麪
- conventional coal mining face 普採工作麪
- coal working face 煤工作麪
- thin coal seam face 薄煤層工作麪
- Mechanized Coal Winning Face 機械化工作麪
- mining coal work face 高档工作麪
- coal caving face 放頂煤工作麪
- coal -face work 採煤工 返回 coal face