变化范 围 : 42 phrases in 19 subjects |
Astronautics | 1 |
Automobiles | 1 |
Aviation | 2 |
Bridge construction | 1 |
Desert science | 1 |
Drilling | 2 |
Ecology | 1 |
Electronics | 2 |
Explosives and Explosive Ordnance Disposal | 1 |
General | 1 |
Hydroelectric power stations | 2 |
Metallurgy | 2 |
Nuclear and fusion power | 1 |
Oil / petroleum | 1 |
Refrigeration | 1 |
Securities | 1 |
Space | 1 |
Technology | 16 |
Wind Energy | 4 |