强度系数 : 59 phrases in 16 subjects |
Architecture | 1 |
Automobiles | 3 |
Aviation | 2 |
Bridge construction | 8 |
Earth sciences | 1 |
Ecology | 1 |
Electronics | 3 |
Explosives and Explosive Ordnance Disposal | 5 |
General | 1 |
Hydroelectric power stations | 4 |
Mechanics | 1 |
Metallurgy | 9 |
Nautical | 1 |
Space | 1 |
Technology | 16 |
Wind Energy | 2 |