降 雨量 : 133 phrases in 22 subjects |
Agriculture | 6 |
Air defense | 2 |
Architecture | 1 |
Aviation | 2 |
Bridge construction | 4 |
Business | 1 |
Climatology | 3 |
Desert science | 1 |
Earth sciences | 3 |
Ecology | 1 |
Economy | 1 |
Electronics | 6 |
Engineering geology | 7 |
Environment | 1 |
General | 3 |
Hydroelectric power stations | 13 |
Hydrology | 3 |
Oil / petroleum | 1 |
Space | 4 |
Technology | 68 |
Water resources | 1 |
Wind Energy | 1 |