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

• 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。
• 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%。
• 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。
• These plants need no nitrogen fertilizers and leave the soil rich in nitrogen.
  这样的植物不需要施用氮肥，并且还给土壤留下了丰富的氮。
• 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。
• 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
• Effects of borax on digestibility of nutrients and nitrogen metabolism in sheep were investigated.
  本文研究了硼砂对绵羊营养物质消化率及氮代谢的影响。
• We destroyed the nest with liquid nitrogen.
  我们用液态氮摧毁了那个窝。
• 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 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。