| |||
| определённый элемент (ssn) | |||
|
certain element : 2 phrases in 2 subjects |
| Firefighting and fire-control systems | 1 |
| Scientific | 1 |
| |||
| определённый элемент (ssn) | |||
|
certain element : 2 phrases in 2 subjects |
| Firefighting and fire-control systems | 1 |
| Scientific | 1 |