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信号 系统 : 238 phrases in 35 subjects |
Agriculture | 3 |
Air defense | 9 |
Archery | 1 |
Architecture | 1 |
Automobiles | 10 |
Aviation | 26 |
Business | 1 |
Communications | 2 |
Computer networks | 1 |
Construction | 2 |
Earth sciences | 1 |
Electricity generation | 2 |
Electronics | 43 |
Explosives and Explosive Ordnance Disposal | 1 |
General | 7 |
Geophysics | 3 |
Hydroelectric power stations | 2 |
Industry | 1 |
Information technology | 6 |
International trade | 1 |
Life sciences | 1 |
Mammals | 1 |
Mechanics | 1 |
Metallurgy | 4 |
Multimedia | 1 |
Nautical | 2 |
Navigation | 1 |
Project management | 1 |
Rail transport | 4 |
Securities | 1 |
Space | 22 |
Sports | 2 |
Technology | 63 |
Telecommunications | 10 |
United Nations | 1 |