![]() |
半致死量 : 30 phrases in 14 subjects |
Agriculture | 3 |
Animal husbandry | 2 |
Desert science | 3 |
Earth sciences | 1 |
Ecology | 1 |
Electronics | 3 |
General | 1 |
Genetics | 1 |
Life sciences | 2 |
Oil / petroleum | 1 |
Reproductive biology | 1 |
Space | 3 |
Technology | 6 |
Water resources | 2 |