 |
| |||
| schlieren picture | |||
| полученный методом полос снимок: 2 phrases in 2 subjects |
| Firefighting and fire-control systems | 1 |
| Quantum electronics | 1 |
|
| |||
| schlieren picture | |||
| полученный методом полос снимок: 2 phrases in 2 subjects |
| Firefighting and fire-control systems | 1 |
| Quantum electronics | 1 |