 |
| |||
| supply and exhaust ventilation system (Elina Semykina) | |||
| balanced system of ventilation | |||
| система приточно-вытяжной вентиляции: 10 phrases in 7 subjects |
| Architecture | 1 |
| Aviation | 1 |
| Construction | 1 |
| General | 1 |
| Technology | 3 |
| Ventilation | 2 |
| Weapons of mass destruction | 1 |