nitrogen An essential nutrient in the food supply of plants and the diets of animals. Animals obtain it in nitrogen-containing compounds, particularly amino acids. Although the atmosphere is nearly 80% gaseous nitrogen, very few organisms have the ability to use it in this form. The higher plants normally obtain it from the soil after micro-organisms have converted the nitrogen into ammonia or nitrates, which they can then absorb ['naɪtrədʒən] n

environ.

氮 (一种在食品供应的植物和动物饮食中必要的营养物质。动物从含氮的化合物中获得的，特别是氨基酸。虽然空气中差不多80%的是气态氮，但非常少的生物体有能力以这种形式使用它。在微生物体已经把氮转变成之后能被吸收的氨或者硝酸盐后，更高等的植物通常能从土壤中获得它。)

nitrogen freezant; propellant ['naɪtrədʒən] n

food.ind.

氮气冷冻剂，推进剂

English thesaurus

Nitrogen ['naɪtrədʒən] n

food.ind., abbr.

E941

nitrogen

: 1614 phrases in 75 subjects

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nitrogen
gen.	氮; 氮; 氮
agric.	氮
compr.	氮
earth.sc.	氮
environ.	氮
food.ind.	氮气
space	氮气
sport. med.	氮


loading
athlet.	负荷
busin.	装货
hydroel.st. од.	加载
interntl.trade.	装船; 货船额外保险费
math.	输入
met.	装料; 荷重; 载重; 装入