| 1. | Improvement of model fd contra - rotating auxiliary fan
型对旋式局部通风机的改进研究 |
| 2. | Technical specification for contrarotating auxiliary fans
对旋式局部通风机技术条件 |
| 3. | Test study of two - speed contra - rotating auxiliary fan
双速对旋式局部通风机的试验研究 |
| 4. | Brief discussion on respiration apparatus
对旋主通风机调节性能的试验研究 |
| 5. | Determining bdk - 10 - no . 36 main fan ' s property
36型对旋主扇性能测定 |
| 6. | 1 have 25 pairs of twist - card module
1采用25对旋卡模块 |
| 7. | An innovation on the rope separator of friction - type hoister in mines
矿用防爆对旋抽出式通风机安全运行浅探 |
| 8. | Development of automatic switchover monitor of model kjd11 local ventilator
系列矿用防爆对旋轴流式局部通风机的研制 |
| 9. | The characters of mine - used moving ventilator with two spinning axles face to face
矿用两级对旋轴流式通风机特点分析 |
