 |
|
flight check : 57 phrases in 15 subjects |
| Aerohydrodynamics | 1 |
| Air defense | 6 |
| Airports and air traffic control | 1 |
| Apollo-Soyuz | 1 |
| Astronautics | 5 |
| Aviation | 9 |
| General | 5 |
| Makarov | 2 |
| Medical | 2 |
| Military | 5 |
| Missiles | 2 |
| Nanotechnology | 1 |
| Space | 8 |
| Technology | 7 |
| Travel | 2 |