衰减率: 64 phrases in 17 subjects |
Air defense | 1 |
Automobiles | 2 |
Aviation | 2 |
Bridge construction | 3 |
Business | 1 |
Earth sciences | 2 |
Electronics | 5 |
Explosives and Explosive Ordnance Disposal | 1 |
Geophysics | 8 |
Hydroelectric power stations | 2 |
Information technology | 3 |
Metallurgy | 1 |
Oil / petroleum | 4 |
Physical sciences | 1 |
Space | 1 |
Technology | 22 |
Telecommunications | 5 |