Nitrogen Oxide氮氧化物;一氧化二氮;氮的氧化物
nitrogen trifluoride翻译
ammonia nitrogen氨氮;[无化] 氨型氮;氨态氮;氨态氨
nitrogen peroxide二氧化氮;[无化] 过氧化氮
nitrogen source氮源;氮源物质;工业上常用的氮源
Polypetide Nitrogen多肽氮
Nitrogen chemistry氮化学
Urea nitrogen尿素氮;脲氮
active nitrogen有效质量;活性氮英语
The biomass between the different nitrogen concentrations had a little difference.
3、2种生菜的生物量随着氮浓度的增加而增加,且生物量在氮水平间差异较小。
参考来源 - 不同施氮水平对几种水培叶菜硝酸盐累积影响的研究N-UNCOUNT（不可数名词） Nitrogen is a colourless element that has no smell and is usually found as a gas. It forms about 78 percent of the Earth's atmosphere, and is found in all living things. 氮