 |
| |||
| drop of floor; drop of a floor | |||
| выступ перекрытия: 3 phrases in 3 subjects |
| Construction | 1 |
| Firefighting and fire-control systems | 1 |
| Thermal engineering | 1 |
|
| |||
| drop of floor; drop of a floor | |||
| выступ перекрытия: 3 phrases in 3 subjects |
| Construction | 1 |
| Firefighting and fire-control systems | 1 |
| Thermal engineering | 1 |