nitrogen

英 [ˈnaɪtrədʒən]

美 [ˈnaɪtrədʒən]

n.  氮; 氮气

复数：nitrogens　

CET4CET6考研TOEFLIELTSTEM4TEM8化学

Collins.1 / BNC.6287 / COCA.5881

牛津词典

noun

• 氮；氮气
  a chemical element. Nitrogen is a gas that is found in large quantities in the earth's atmosphere.

柯林斯词典

• 氮;氮气
  Nitrogenis a colourless element that has no smell and is usually found as a gas. It forms about 78% of the earth's atmosphere, and is found in all living things.

英英释义

noun

• a common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas
  Synonym:Natomic number 7

双语例句

• The plant requires nitrogen in order to make proteins.
  植物需要氮以便制造蛋白质。
• Carbohydrate is found in sugar, Organic carbon and total nitrogen in bed load had enrichment phenomenon.
  碳水化合物富含于糖推移质中有机碳和全氮均有富集现象。
• The pyrolysis characteristics of polytetrafluoroethylene ( PTFE) were studied in the atmosphere of nitrogen by thermogravimetric analysis.
  采用热重分析法，研究了聚四氟乙烯（PTFE）在氮气气氛下的热裂解特性。
• Nitrogen fertilizer had significant promoting effect on yield and water use of winter wheat.
  施氮对冬小麦产量和水分利用效率有显著促进作用。
• Life on Earth requires six basic ingredients carbon, hydrogen, nitrogen, oxygen, sulfur and phosphorus.
  地球上的生命体需要六种基本元素碳、氢、氮、氧、硫和磷。
• ■ Five basic elements: carbon, oxygen, hydrogen, phosphorus and nitrogen.
  ■五种基本元素：碳、氧、氢、磷和氮。
• The consumption of the carbon, nitrogen and phosphate acid closely correlated with the crocin synthesis.
  碳源、源和磷酸的消耗与藏红花素的合成密切相关。
• Researchers also blamed exposure to nitrogen dioxide, carbon monoxide and particulates for the increase.
  研究人员还指责了二氧化氮，一氧化碳和颗粒物的增加问题。
• The removal rates of ammonia nitrogen, denitrification ability and anammox ability were investigated in three bioreactors.
  探讨了序批式生物反应器填埋场的氨氮去除率、反硝化能力以及厌氧氨氧化能力。
• Removal of Phosphate and Ammonia Nitrogen from Hogpen Wastewater by Steel Slag and Zeolite
  钢渣和沸石去除猪场废水中的磷酸盐和氨氮