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electromagnetic radiation : 60 phrases in 16 subjects |
Air defense | 6 |
Aviation | 3 |
Chemistry | 1 |
Earth sciences | 5 |
Ecology | 4 |
Electronics | 9 |
General | 3 |
Geophysics | 2 |
Hydroelectric power stations | 1 |
Information technology | 3 |
Nautical | 1 |
Plastics | 1 |
Project management | 1 |
Space | 7 |
Technology | 11 |
Telecommunications | 2 |