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

• 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。
• 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。
• 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。
• 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。
• 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。
• Oxygen, hydrogen and nitrogen are all gases.
  氧气、氢气和氮气都是气体。
• 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。
• 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。
• The basic nitrogen compounds include pyridines and quinolines.
  碱性氮化物包括吡啶和喹啉。