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| 通风竖井; 通风井; 通气竖管 | |||
| 通风管道 | |||
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| 通风竖井 | |||
| 通气竖井 | |||
| 风井用于矿井通风的井筒，从地面向井下工作面传输新鲜空气时称下风井, 从井下工作面向地面排废气时称上风井 | |||
| 通风井 | |||
| 通风竖井 | |||
| 通气竖管; 通风筒; 风井; 防风道; 隧道的通风竖井; 风道; 通风道 | |||
| air-shaft: 36 phrases in 6 subjects |
| Architecture | 2 |
| Electronics | 4 |
| Hydroelectric power stations | 4 |
| Refrigeration | 4 |
| Shipbuilding | 1 |
| Technology | 21 |