 |
| |||
| ouvertures d'entrée d'air | |||
| отверстия впуска воздуха: 12 phrases in 5 subjects |
| Aviation | 6 |
| Chemistry | 1 |
| Hydraulic engineering | 1 |
| Metallurgy | 1 |
| Mining | 3 |
|
| |||
| ouvertures d'entrée d'air | |||
| отверстия впуска воздуха: 12 phrases in 5 subjects |
| Aviation | 6 |
| Chemistry | 1 |
| Hydraulic engineering | 1 |
| Metallurgy | 1 |
| Mining | 3 |