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

• 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。
• 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%。
• 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
• 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。
• 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。
• 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。
• 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。
• The experiment method of the measurement nanoparticles specific surface areas by the nitrogen adsorption method is investigated.
  本文研究了用氮吸附法测定纳米粒子比表面积的实验方法。
• The consumption of the carbon, nitrogen and phosphate acid closely correlated with the crocin synthesis.
  碳源、源和磷酸的消耗与藏红花素的合成密切相关。
• 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。