 |
| |||
| air sweeping system (Porcia) | |||
| air recirculation system | |||
| air circulating system | |||
| air-circulating system | |||
| система циркуляции воздуха: 18 phrases in 10 subjects |
| Astronautics | 3 |
| Automobiles | 2 |
| Construction | 3 |
| Makarov | 2 |
| Nautical | 1 |
| Occupational health & safety | 1 |
| Production | 2 |
| Textile industry | 2 |
| Thermal engineering | 1 |
| Transport | 1 |