 |
| |||
| система для дыхания | |||
| breathing air system: 13 phrases in 6 subjects |
| Astronautics | 3 |
| Military | 4 |
| Nuclear physics | 1 |
| Security systems | 1 |
| Technology | 3 |
| Thermal engineering | 1 |
|
| |||
| система для дыхания | |||
| breathing air system: 13 phrases in 6 subjects |
| Astronautics | 3 |
| Military | 4 |
| Nuclear physics | 1 |
| Security systems | 1 |
| Technology | 3 |
| Thermal engineering | 1 |