风化层: 76 phrases in 15 subjects |
Agriculture | 1 |
Automobiles | 1 |
Bridge construction | 3 |
Desert science | 13 |
Earth sciences | 1 |
Electronics | 1 |
Engineering geology | 3 |
Explosives and Explosive Ordnance Disposal | 2 |
General | 2 |
Geology | 1 |
Hydroelectric power stations | 3 |
Metallurgy | 1 |
Oil / petroleum | 17 |
Space | 1 |
Technology | 26 |