抽水 量 : 67 phrases in 14 subjects |
Agriculture | 2 |
Animal husbandry | 1 |
Aviation | 1 |
Bridge construction | 1 |
Desert science | 1 |
Earth sciences | 3 |
Ecology | 1 |
Electric machinery | 2 |
Electronics | 2 |
Engineering geology | 18 |
Hydraulics | 1 |
Hydroelectric power stations | 3 |
Hydrology | 2 |
Technology | 29 |