| 1. | Improving on automatic device for rotary fan
11型局部通风机自动切换监控器的研制 |
| 2. | Inquiring into local power supply method in mines
井下局部通风机供电方式的探讨 |
| 3. | Technical specification for auxiliary fans used for mine
矿井局部通风机.技术条件 |
| 4. | Improvement of model fd contra - rotating auxiliary fan
型对旋式局部通风机的改进研究 |
| 5. | Technical specification for contrarotating auxiliary fans
对旋式局部通风机技术条件 |
| 6. | Using auxiliary fan to treat gas in upper corner
局部通风机引排上隅角瓦斯技术的应用 |
| 7. | Test study of two - speed contra - rotating auxiliary fan
双速对旋式局部通风机的试验研究 |
| 8. | Development of auto - shifting device of auxiliary fan
矿用局部通风机自动切换装置的研制 |
| 9. | Application of intelligent double - auxiliary fan special switch
智能双局部通风机专用开关的应用 |
| 10. | Automatic rotate device of auxiliary fan
局部通风机自动倒台装置 |
