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denitrogenate | |||
denitrogen | |||
denitrogenation | |||
removal of nitrogen |
除 氮 : 32 phrases in 10 subjects |
Agriculture | 3 |
Animal husbandry | 1 |
Aviation | 1 |
Desert science | 1 |
Ecology | 4 |
Explosives and Explosive Ordnance Disposal | 1 |
Space | 3 |
Technology | 11 |
United Nations | 1 |
Water resources | 6 |