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。
• Oxygen, hydrogen and nitrogen are all gases.
  氧气、氢气和氮气都是气体。
• The scientists then compared how much nitrogen and phosphorus were available in the soil.
  科学家然后比较土壤里有多少氮和磷元素吸收了。
• Both phosphorus and nitrogen are key nutrients for living organisms.
  磷和氮都是活组织生长的关键营养物质。
• Among the common toxic gases are sulfur dioxide, methane, the oxides of nitrogen, ammonia, hydrogen sulfide, and hydrogen cyanide; and ( most commonly) carbon monoxide.
  常见的有毒气体有二氧化硫、甲烷、氧化氮、氨、硫化氢、氰化氢以及最常见的一氧化碳。
• The faeces contain nitrogen and it is that which fertilises the desert soil.
  粪便含氮，而正是氮可以肥化荒芜的土地。
• Combustion at high temperature causes decomposition to nitrogen and water.
  氨在高温下燃烧分解成为氮和水。
• 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。
• ■ Five basic elements: carbon, oxygen, hydrogen, phosphorus and nitrogen.
  ■五种基本元素：碳、氧、氢、磷和氮。
• 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。