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| supply and exhaust ventilation system (Elina Semykina) | |||
| balanced system of ventilation | |||
| система приточно- вытяжной вентиляции: 10 phrases, 7 sujets |
| Architecture | 1 |
| Armes de destruction massive | 1 |
| Aviation | 1 |
| Construction | 1 |
| Général | 1 |
| Technologie | 3 |
| Ventilation | 2 |