 |
| space environment: 81 phrases in 17 subjects |
| Aerohydrodynamics | 3 |
| Astronautics | 34 |
| Aviation | 7 |
| Aviation medicine | 8 |
| Ecology | 5 |
| General | 1 |
| Information technology | 3 |
| Internet | 1 |
| Makarov | 1 |
| Mass media | 1 |
| Mechanics | 1 |
| Medical | 1 |
| Military | 3 |
| Nanotechnology | 4 |
| Robotics | 1 |
| Technology | 6 |
| United Nations | 1 |