|
controlled source : 44 phrases in 14 subjects |
| Aviation | 2 |
| Earth sciences | 8 |
| Electric machinery | 2 |
| Electronics | 7 |
| Explosives and Explosive Ordnance Disposal | 1 |
| General | 2 |
| Geophysics | 5 |
| Hydroelectric power stations | 1 |
| Information technology | 4 |
| Metallurgy | 3 |
| Oceanography & oceanology | 1 |
| Oil / petroleum | 2 |
| Space | 2 |
| Technology | 4 |