方位 测定 : 38 phrases in 16 subjects |
Air defense | 3 |
Automated equipment | 1 |
Aviation | 1 |
Drilling | 3 |
Earth sciences | 2 |
Electronics | 1 |
Explosives and Explosive Ordnance Disposal | 1 |
Finances | 1 |
General | 2 |
Nautical | 1 |
Navigation | 1 |
Oil / petroleum | 3 |
Space | 5 |
Technology | 10 |
Telecommunications | 2 |
United Nations | 1 |