| 1. | Propeller fans exhaust air through holes in the wall .
螺旋式通风机从壁孔中排出空气。 |
| 2. | The fan at the window made a small whispering roar .
窗上的通风机发出了耳语般轻微的嗡嗡声。 |
| 3. | Because of their efficiency, compactness, and simplicity of installation, axial flow fans have become increasingly used in recent years .
由于它们效率高，体积小，装配简易，轴流式通风机近些年来使用得越来越多了。 |
| 4. | Improving on automatic device for rotary fan
11型局部通风机自动切换监控器的研制 |
| 5. | Nonlinear stress analysis on blade of tunnel fan
隧道通风机叶片非线性应力场分析 |
| 6. | Inquiring into local power supply method in mines
井下局部通风机供电方式的探讨 |
| 7. | Emergency vault ventilators and vault - ventilating ports
储藏室紧急通风机和通风口 |
| 8. | Technical specification for auxiliary fans used for mine
矿井局部通风机.技术条件 |
| 9. | Shipbuilding . outlet ventilators . swivel head
造船工业.出口通风机.旋转吹风头 |
| 10. | Industrial fans - vocabulary and definitions of categories
工业通风机词汇及种类定义 |
