 |
| |||
| free radical propulsion engine | |||
| ракетний двигун: 597 phrases in 14 subjects |
| Agriculture | 1 |
| Astronautics | 64 |
| Aviation | 188 |
| Chemistry | 1 |
| Construction | 3 |
| Earth sciences | 1 |
| Ecology | 1 |
| General | 11 |
| Military | 301 |
| Missiles | 1 |
| Space | 6 |
| Technology | 13 |
| Transport | 5 |
| Weapons and gunsmithing | 1 |