coal face
短語詞組
- 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(jī)械化工作麪
- mining coal work face 高檔工作麪
- coal caving face 放頂煤工作麪
- coal -face work 採煤工 返回 coal face