air defense: 412 phrases in 13 subjects |
Air defense | 53 |
Architecture | 1 |
Astronautics | 1 |
Aviation | 145 |
Electronics | 40 |
Explosives and Explosive Ordnance Disposal | 1 |
General | 37 |
Nautical | 2 |
Shipbuilding | 2 |
Space | 113 |
Technology | 7 |
United Nations | 3 |
United States | 7 |