阐述了造成主井回风的自然热位差产生原因和对通风系统的影响，以及治理办法。

Mine, the causes of natural thermal potential difference in return air in main shaft and its influence on mine ventilation system and the control methods.

youdao

阐述了造成主井回风的自然热位差产生原因和对通风系统的影响，以及治理办法。

Mine, the causes of natural thermal potential difference in return air in main shaft and its influence on mine ventilation system and the control methods.

youdao