ventilation pressureの例文
- Measures and calculates mine nature ventilation pressure by air reversing methods
- Application on indirect calculation of natural ventilation pressure in chengjiao coal mine
- Application of even ventilation pressure technology to control emission of carbon monoxide from goaf
- Influence of nature ventilation pressure against reversing ventilation in multi air shaft level mine
- Influence of nature ventilation pressure against reversing ventilation in multi air shaft amp; amp; level mine