nitrogen 词态变化
形容词: nitrogenous;
nitrogen 中文词源
nitrogen 氮气nitr-,硝，-gen,产生。因研究硝石化学性质时认识这种气体而得名。
nitrogen 英文词源
- nitrogen (n.)
- 1794, from French nitrogène, coined 1790 by French chemist Jean Antoine Chaptal (1756-1832), from comb. form of Greek nitron "sodium carbonate" (see nitro-) + French gène "producing," from Greek -gen "giving birth to" (see -gen). The gas was identified in part by analysis of nitre. Earlier name (1772) was mephitic air, and Lavoisier called it azote (see azo-).
nitrogen 英文释义
- 1. a common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas; constitutes 78 percent of the atmosphere by volume; a constituent of all living tissues
nitrogen 双语例句
- 1. The atmosphere consist of more than 70 % of nitrogen.
- 大气中含有70%以上的氮气.
来自《简明英汉词典》
- 2. Every tonne of coal contains, on average, 30 kilograms of nitrogen.
- 每吨煤平均含30公斤氮.
来自《简明英汉词典》
- 3. The plant requires nitrogen in order to make proteins.
- 植物需要氮以便制造蛋白质.
来自《现代汉英综合大词典》
- 4. What is the percentage of nitrogen in air?
- 空气中所含的氮的比例是多少?
来自《简明英汉词典》
- 5. Nitrogen is a gas without colour or smell.
- 氮是一种无色无臭的气体.
来自《简明英汉词典》
nitrogen 实用场景例句
- Nitrogen is the most important for high yield of rice.
- 氮对水稻高产最为重要.
期刊摘选
- However, remained organic matter was not enough for the denitrification of nitrogen nitrate.
- 然而, 有机物过早消耗对硝化后产生的硝酸氮再行反硝化作用不利.
期刊摘选
- The amide nitrogen of glutamine or asparagine functions more effectively than ammonia.
- 谷酰胺或天门冬酰胺的酰胺氮作用较氨更有效.
辞典例句
- The granularity of coal, inoculation amount of bacteria and additional nitrogen have some effect on desulfurization.
- 煤样的粒度 、 菌接种量、加氮源对脱硫有一定影响.
期刊摘选
- Nitramines are substances which contain a nitro group bonded to nitrogen.
- 含有与氮原子相连的硝基的物质称为硝胺.
辞典例句
- Can detect hydrogen, oxygen, nitrogen, carbon monoxide, methane, dioxide, ethylene, ethane, acetylene and other gases.
- 可对氢 、 氧 、 氮 、 一氧化碳 、 甲烷 、 二氧化碳 、 乙烯 、 乙烷 、 乙炔九种气体检测.
期刊摘选
- Increased nitrogen levels in seawater upset the natural ecological balance of the oceans.
- 海水中增加的氮含量打乱了海洋的自然生态平衡.
期刊摘选
- Enterprises shall gradually adopt measures to control the nitrogen oxide generated by the burning of fuel.
- 企业应当对燃料燃烧过程中产生的氮氧化物采取控制措施.
期刊摘选
- Nitrification is the key to biological wastewater nitrogen removal.
- 硝化作用是废水生物脱氮中的关键.
期刊摘选
- High concentration of sulphur dioxide, nitrogen, oxides and dust have long been known to be harmful.
- 人们早已知道,二氧化硫 、 氮 、 氧化物和尘埃浓度高是有害的.
期刊摘选
- And also it refers the prevention and treatment technology of nitrogen in groundwater.
- 同时,要提高三氮污染的野外监测水平和三氮污染的治理技术研究.
期刊摘选
- The lamp is full of gaseous nitrogen.
- 灯里充满了气体氮.
期刊摘选
- Nitrogen: Gaseous chemical element, chemical symbol N, atomic number 7.
- 氮: 气态化学元素, 化学符号N, 原子序数7.
期刊摘选
- Common market, there are nitrogen, air, hydrogen, ammonia, acetylene, propane, steam and other special relief valve.
- 市面上常见的有氮气 、 空气 、 氢气 、 氨 、 乙炔 、 丙烷 、 水蒸气等专用减压阀.
期刊摘选
- The mechanism of the high nitrogen stainless steel showing excellent properties also analyzed and discussed.
- 本文还对高氮不锈钢表现出的优异性能的机制进行了分析和讨论.
期刊摘选
- Since nitrogen is non corrosive , special materials of construction are not required to prevent corrosion.
- 由于氮无腐蚀性,不需要特殊的建材.但是,选择的建材必须能抗液氮的低温.
期刊摘选
- There are nitrogen, oxygen, a little carbon dioxide and water vapour.
- 它们分别是氮气, 氧气, 少量的二氧化碳和水蒸汽.
期刊摘选
- Nitrogen dioxide and ozone may cause pulmonary edema.
- 二氧化炭和臭氧可以引起肺水肿.
辞典例句
- The atmosphere consist of more than 70 % of nitrogen.
- 大气中含有70%以上的氮气.
《简明英汉词典》
- Every tonne of coal contains, on average, 30 kilograms of nitrogen.
- 每吨煤平均含30公斤氮.
《简明英汉词典》
- What is the percentage of nitrogen in air?
- 空气中所含的氮的比例是多少?
《简明英汉词典》
- Nitrogen is a gas without colour or smell.
- 氮是一种无色无臭的气体.
《简明英汉词典》
- The plant requires nitrogen in order to make proteins.
- 植物需要氮以便制造蛋白质.
《现代汉英综合大词典》
- 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。
柯林斯例句
