nitrogen
英 ['na?tr?d?(?)n]
美['na?tr?d??n]
- n. [化學] 氮
CET4TEM4IELTS考研CET6低頻詞常用詞匯
詞態(tài)變化
形容詞:?nitrogenous;
助記提示
1. 1787年由拉瓦錫和其他法國科學家提出，氮的英文名稱nitrogen，是"硝石組成者“的意思。中國清末化學家啟蒙者徐壽在第一次把氮譯成中文時曾寫成“淡氣”，意思是說，它“沖淡”了空氣中的氧氣。元素名來源于希臘文，原意是“硝石”。
中文詞源
nitrogen 氮氣
nitr-,硝，-gen,產(chǎn)生。因研究硝石化學性質(zhì)時認識這種氣體而得名。
英文詞源
- nitrogen (n.)
- 1794, from French nitrogène, coined 1790 by French chemist Jean Antoine Chaptal (1756-1832), from comb. form of Greek nitron "sodium carbonate" (see nitro-) + French gène "producing," from Greek -gen "giving birth to" (see -gen). The gas was identified in part by analysis of nitre. Earlier name (1772) was mephitic air, and Lavoisier called it azote (see azo-).
雙語例句
- 1. The atmosphere consist of more than 70 % of nitrogen.
- 大氣中含有70%以上的氮氣.
來自《簡明英漢詞典》
- 2. Every tonne of coal contains, on average, 30 kilograms of nitrogen.
- 每噸煤平均含30公斤氮.
來自《簡明英漢詞典》
- 3. The plant requires nitrogen in order to make proteins.
- 植物需要氮以便制造蛋白質(zhì).
來自《現(xiàn)代漢英綜合大詞典》
- 4. What is the percentage of nitrogen in air?
- 空氣中所含的氮的比例是多少?
來自《簡明英漢詞典》
- 5. Nitrogen is a gas without colour or smell.
- 氮是一種無色無臭的氣體.
來自《簡明英漢詞典》