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声源 : 234 phrases in 29 subjects |
Acoustics | 3 |
Air defense | 13 |
Automobiles | 9 |
Aviation | 6 |
Chemistry | 1 |
Cryptography | 2 |
Earth sciences | 6 |
Ecology | 6 |
Electronics | 19 |
Environment | 1 |
Explosives and Explosive Ordnance Disposal | 6 |
General | 5 |
Geophysics | 28 |
Health care | 1 |
Information technology | 2 |
Multimedia | 1 |
Name of organization | 1 |
Nautical | 5 |
Navigation | 3 |
Oil / petroleum | 6 |
Otorhinolaryngology | 2 |
Physics | 1 |
Plastics | 3 |
Rail transport | 1 |
Refrigeration | 3 |
Space | 13 |
Technology | 78 |
Telecommunications | 7 |
Wind Energy | 2 |