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

• They are mostly sulfur dioxide and nitrogen dioxide from power plants, auto exhausts and industry.
  这些颗粒大部分是发电站、汽车尾气和工厂排出的二氧化硫和二氧化氮。
• Carbon source, nitrogen source and plant hormone had the obvious effects on the callus growth and flavonoids production.
  碳源、氮源、植物激素对愈伤组织生长和黄酮类形成影响较为显著。
• 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。
• Nitrogen is of paramount importance to life on earth.
  氮对地球上的生命至关重要。
• 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。
• 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。
• 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。
• 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。