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

• 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。
• Carbon atoms can form bonds with nitrogen and oxygen atoms.
  碳原子可以与氮和氧原子形成化学键。
• Sulfur dioxide and nitrogen oxides are the main gas emissions of the smoke and waste gas.
  二氧化硫和氮氧化物是烟气的主要气体排放物。
• Choose a fertilizer that contains nitrogen, phosphorus, and potassium.
  选择含有氮，磷和钾的肥料。
• 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。
• 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。
• 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。
• Combustion at high temperature causes decomposition to nitrogen and water.
  氨在高温下燃烧分解成为氮和水。
• The amount and time of nitrogen application of bilinear of late rice were studied.
  本文对两系杂交晚稻的施氮量和施氮时期进行了研究。
• The concentration of nitrogen dioxide in Beijing's air was reduced by an average of 20 per cent.
  北京空气中二氧化氮的含量平均降低了20%。