(nitrogen 的复数) n. 氮
[化] 氮N-2

plural of nitrogen
n. a common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas; constitutes 78 percent of the atmosphere by volume; a constituent of all living tissues

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学英语单词

adiantum hispidulum sw.

adrians

aircraft lubricating oil

Bombax malabaricum DC.

borogen