安全 荷载 : 61 phrases in 19 subjects |
Architecture | 2 |
Automobiles | 3 |
Aviation | 1 |
Bridge construction | 2 |
Business | 1 |
Compressors | 1 |
Computer networks | 2 |
Cryptography | 1 |
Earth sciences | 1 |
Economy | 1 |
Electronics | 2 |
Engineering geology | 3 |
Explosives and Explosive Ordnance Disposal | 1 |
Hydroelectric power stations | 2 |
Information technology | 1 |
Nautical | 4 |
Oil / petroleum | 2 |
Space | 2 |
Technology | 29 |