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射 频 : 1059 phrases in 50 subjects |
Agriculture | 5 |
Air defense | 121 |
Animal husbandry | 2 |
Artificial intelligence | 1 |
Automobiles | 3 |
Aviation | 43 |
Business | 1 |
Chemistry | 7 |
Communications | 9 |
Computer networks | 3 |
Construction | 3 |
Cryptography | 4 |
Earth sciences | 18 |
Ecology | 3 |
Electric machinery | 2 |
Electronics | 170 |
Environment | 1 |
Explosives and Explosive Ordnance Disposal | 6 |
Fish farming pisciculture | 3 |
General | 29 |
Geophysics | 20 |
Hydroelectric power stations | 1 |
Information technology | 19 |
Labor law | 1 |
Librarianship | 8 |
Life sciences | 1 |
Logistics | 1 |
Medical appliances | 2 |
Metallurgy | 33 |
Multimedia | 4 |
Nautical | 1 |
Nursing | 5 |
Oil / petroleum | 23 |
Physics | 2 |
Plastic surgery | 1 |
Plastics | 15 |
Polymers | 3 |
Project management | 6 |
Radio | 3 |
Rail transport | 1 |
Refrigeration | 2 |
Reproductive biology | 1 |
Selective breeding | 1 |
Shipbuilding | 2 |
Space | 131 |
Statistics | 1 |
Surgery | 4 |
Technology | 312 |
Telecommunications | 20 |
Textile industry | 1 |