英 [ˈnaɪtrədʒən] 美 [ˈnaɪtrədʒən]
n. [化学] 氮
nitrogen /ˈnaɪtrədʒən/ CET4 TEM4
不可数名词 Nitrogen is a colourless element that has no smell and is usually found as a gas. It forms about 78 percent of the Earth's atmosphere, and is found in all living things. 氮
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
同义词： N / atomic number 7
氮-引用次数：4822
The biomass between the different nitrogen concentrations had a little difference.
3、2种生菜的生物量随着氮浓度的增加而增加,且生物量在氮水平间差异较小。
氮气
痰气
氮
氮
氮
氮
氮气
...ion）的情形，天然钻石当中的微量元素或晶格扭曲就是形成钻石颜色的致色成因，不同颜色的彩钻致色的成因不一样。 氮（Nitrogen）与硼（Boron）是让钻石致色主要的微量元素，当氮原子取代了钻石结晶中小部分碳原子的时候，钻石吸收掉光线中的紫色与蓝色光，所以...
2.5氦气（helium）：氦气分子式为He。医疗上常用于高频氦气刀等手术器械。 2.6氮气（nitrogen）：氮气的分子式为N2。医疗上用来驱动医疗设备和工具。
... Oxygen氧气 Nitrogen痰气 Hydrogen Sulphide二氧化硫 ...
毕业论文天下网_红曲霉生产红色素菌株发酵条件的优_生物工程毕业论文格式范文 关键词：红曲霉；红色素；色价；碳源；氮源 [gap=1458]Keywords：Monascus; red pigment; color value; carbon; nitrogen
nitrogenous 氮的；[化学] 含氮的
nitrogenize 使含氮；使氮化
[化学]氮
The tanker was carrying liquid nitrogen.
油轮那时正在运送液态氮。
The faeces contain nitrogen which fertilizes the soil.
排泄物含有肥沃土壤的氮。
Nitrogen is an unstable element.
氮是一种不稳定的元素。
But improved farming methods later increased their yields and, at the same time, made better use of chemical nitrogen fertilizer.
VOA : special.2009.07.28
So, in order to fill our octet, what we do is put two on the nitrogen and two on the carbon.
因此，为了填满我们的“八隅体“,我们需要将两个放到氮上，将另外两个放到碳上。
化学原理课程节选 : 麻省理工公开课
So what we can actually directly compare is the dissociation energy or the bond strength of nitrogen versus hydrogen.
因此实际上我们可以直接进行比较,对氮分子与氢分子的离解能,或键的强度。
化学原理课程节选 : 麻省理工公开课
The atmosphere is about twenty-percent oxygen and eighty percent nitrogen from Earth's surface to where space begins at one-hundred-twenty kilometers up.
VOA : special.2011.04.06
University of Virginia professor Jim Galloway calls synthetic nitrogen fertilizer a "wonderful invention" because it increased food production.
VOA : special.2011.04.05
State oil company Pemex drilled dozens of new wells and built a system to inject nitrogen gas.
Engineers said they were considering also injecting nitrogen into the number two and three reactors.
Nitrogen, a basic organic compound, is then simply incorporated back into the food chain.