回风巷 meaning in Chinese
return airway
Examples
- Water drainage of 2031 face in 21 district of huopu mine
采用下行通风回收采面及回风巷的实践 - Study on reasonable position of air - return roadway near the edge of goaf
采空区边缘回风巷合理位置的研究 - Special support used in haulage way and return airway of 21123 fully mechanized face during larger ground pressure
21123综采工作面运输及回风巷的特殊支护