累积曲线 : 109 phrases in 19 subjects |
Agriculture | 1 |
Animal husbandry | 2 |
Architecture | 2 |
Bridge construction | 3 |
Business | 1 |
Desert science | 7 |
Earth sciences | 1 |
Economy | 1 |
Engineering geology | 1 |
Genetics | 1 |
Hydroelectric power stations | 11 |
Hydrology | 2 |
Life sciences | 1 |
Mathematics | 3 |
Metallurgy | 5 |
Rail transport | 1 |
Statistics | 8 |
Technology | 57 |
Telecommunications | 1 |