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信号 装置: 183 phrases in 20 subjects |
Air defense | 6 |
Automobiles | 17 |
Aviation | 31 |
Chemistry | 1 |
Communications | 3 |
Earth sciences | 1 |
Electronics | 17 |
Explosives and Explosive Ordnance Disposal | 1 |
General | 5 |
Geophysics | 2 |
Hydroelectric power stations | 3 |
Ice hockey | 1 |
Metallurgy | 1 |
Nautical | 2 |
Oil / petroleum | 4 |
Refrigeration | 1 |
Skydiving | 2 |
Space | 14 |
Technology | 68 |
Telecommunications | 3 |