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

• 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
• Sulphur Oxides and Nitrogen Oxides are two major emissions released in the flue gas of coal-fired power plants.
  硫氧化物和氮氧化物是燃煤电厂烟气中两种主要的污染物。
• 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。
• Combustion at high temperature causes decomposition to nitrogen and water.
  氨在高温下燃烧分解成为氮和水。
• Oxygen, hydrogen and nitrogen are all gases.
  氧气、氢气和氮气都是气体。
• 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。
• 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。
• Choose a fertilizer that contains nitrogen, phosphorus, and potassium.
  选择含有氮，磷和钾的肥料。
• 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。
• 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。