nitrogen

noun

1. 氮；氮气
   a chemical element. Nitrogen is a gas that is found in large quantities in the earth's atmosphere.

1. 氮;氮气
   Nitrogen is 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.

1. 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。
2. Nitrogen is of paramount importance to life on earth.
   氮对地球上的生命至关重要。
3. The plant requires nitrogen in order to make proteins.
   植物需要氮以便制造蛋白质。
4. The basic nitrogen compounds include pyridines and quinolines.
   碱性氮化物包括吡啶和喹啉。
5. 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。
6. Combustion at high temperature causes decomposition to nitrogen and water.
   氨在高温下燃烧分解成为氮和水。
7. 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。
8. 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。
9. 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。
10. ■ Five basic elements: carbon, oxygen, hydrogen, phosphorus and nitrogen.
    ■五种基本元素：碳、氧、氢、磷和氮。
11. Choose a fertilizer that contains nitrogen, phosphorus, and potassium.
    选择含有氮，磷和钾的肥料。
12. We destroyed the nest with liquid nitrogen.
    我们用液态氮摧毁了那个窝。
13. 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。
14. 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。
15. 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。
16. 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。
17. 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。
18. 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%。
19. 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。
20. 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。
21. The pyrolysis characteristics of polytetrafluoroethylene ( PTFE) were studied in the atmosphere of nitrogen by thermogravimetric analysis.
    采用热重分析法，研究了聚四氟乙烯（PTFE）在氮气气氛下的热裂解特性。
22. 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
23. 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。
24. 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。
25. Oxygen, hydrogen and nitrogen are all gases.
    氧气、氢气和氮气都是气体。
26. 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。
27. 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。
28. 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。
29. 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。
30. 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。

noun

1. a common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas

   Synonym:    Natomic number 7