| |||
nitrogen level | |||
nitrogen content | |||
nitrogenous content |
含 氮量 : 31 phrases in 13 subjects |
Agriculture | 4 |
Animal husbandry | 4 |
Ecology | 4 |
Electronics | 1 |
Environment | 1 |
Food industry | 1 |
Food service and catering | 1 |
General | 3 |
Metallurgy | 3 |
Oil / petroleum | 1 |
Space | 1 |
Technology | 4 |
Water resources | 3 |