 |
| |||
| комбинированная вентиляция | |||
| combined ventilation: 8 phrases in 4 subjects |
| Architecture | 1 |
| Mining | 3 |
| Security systems | 1 |
| Technology | 3 |
|
| |||
| комбинированная вентиляция | |||
| combined ventilation: 8 phrases in 4 subjects |
| Architecture | 1 |
| Mining | 3 |
| Security systems | 1 |
| Technology | 3 |