 |
| |||
| surveillance of air; surveillance of airspace | |||
| air observation | |||
| surveillance | |||
| air watch; air surveillance | |||
| air scouting | |||
| наблюдение за воздухом: 28 phrases in 12 subjects |
| Aviation medicine | 3 |
| Diplomacy | 1 |
| Ecology | 4 |
| Makarov | 1 |
| Medical appliances | 1 |
| Meteorology | 1 |
| Metrology | 2 |
| Military | 8 |
| Mining | 1 |
| Natural resourses and wildlife conservation | 2 |
| Nautical | 2 |
| Technology | 2 |