 |
| |||
| well | |||
| air shaft; ventilating shaft | |||
| vent shaft | |||
| air relief shaft | |||
| air intake shaft; light well; venting shaft | |||
| |||
| air-handling shaft; air inlet shaft; air-relief shaft; air shaft; air well; ventilating shaft; ventilation shaft | |||
| 通风竖井: 9 phrases in 5 subjects |
| Architecture | 1 |
| Electric machinery | 1 |
| Engineering geology | 1 |
| Hydroelectric power stations | 1 |
| Technology | 5 |