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固 氮 : 181 phrases in 20 subjects |
Agriculture | 61 |
Animal husbandry | 2 |
Biology | 7 |
Botany | 1 |
Chemistry | 8 |
Desert science | 22 |
Earth sciences | 2 |
Ecology | 4 |
Environment | 3 |
General | 18 |
Genetics | 7 |
Latin | 2 |
Life sciences | 5 |
Microbiology | 7 |
Name of organization | 3 |
Oil / petroleum | 4 |
Pharmacology | 3 |
Space | 1 |
Technology | 14 |
Water resources | 7 |