This paper presented the simultaneously determine the nitrate nitrogen and the nitrous nitrogen in drinking water by UV.
提出了紫外分光光度法同时测定生活饮用水中的硝酸盐氮和亚硝酸盐氮的含量。
While nitrous oxide is a powerful greenhouse gas, when it's burned as rocket fuel, the only byproducts are hot oxygen and nitrogen.
虽然氧化氮是种温室效应气体，但当用作火箭燃料燃烧时，排出的副产品仅仅是热氧气和热氮气。
There, in a process called denitrification, microbes convert the nitrogen into nitrous oxide (also called laughing gas) and an inert gas called dinitrogen.
在那里，经称为脱氮的过程，微生物把氮转化为一氧化二氮(又称笑气)和一种称为二氮的惰性气体。
They found that the amount of nitrous oxide produced in streams is related to human activities that release nitrogen into the environment, such as fertilizer use and sewage discharges.
他们发现，溪流中一氧化二氮的数量与人类活动释放到环境中的氮有关，如使用化肥和污水排放。
Reducing use of agricultural fertilizer and other sources of nitrogen are examples of how to decrease humanity’s contribution to the growth of nitrous oxide produced in waterways, the study concluded.
人类使河川释放出一氧化二氮增加，而研究结论指出，透过减少使用农业肥料和其他含氮物质，可以改善这种情况。
Reducing use of agricultural fertilizer and other sources of nitrogen are examples of how to decrease humanity's contribution to the growth of nitrous oxide produced in waterways, the study concluded.
人类使河川释放出一氧化二氮增加，而研究结论指出，透过减少使用农业肥料和其他含氮物质，可以改善这种情况。
The problem has been how to dispose of the nitrous oxide byproduct, which is far worse for the environment than nitrogen.
问题是如何处置氧化氮副产品，这对环境污染远比氮气更严重。
Emissions of nitrous oxide (a very powerful greenhouse gas) caused by the application of nitrogen fertilisers.
氮肥的使用造成氧化亚氮的排放(一种威力强大的温室气体)。
In a Stanford press release, Cantwell says the nitrous oxide can heat an engine to almost 3, 000 degrees Fahrenheit and expel nitrogen and oxygen at 5, 000 feet per second.
Cant well教授在斯坦福出版的新闻稿中说，氧化氮能把发动机加热到华氏3,000度，排出氮气和氧气每秒钟5,000英尺。
Purpose: Studies the removal effect on ammonia nitrogen, nitrous acid nitrogen, CODMn and turbidity during immobilized nitrobacterias pilot experiment, and provide reference for the actual project.
目的分别研究小试中试条件下固化硝化菌对氨氮的去除效果及相关参数的选择，为实际工程提供参考。
In a Stanford press release, Cantwell says the nitrous oxide can heat an engine to almost 3,000 degrees Fahrenheit and expel nitrogen and oxygen at 5,000 feet per second.
Cant well教授在斯坦福出版的新闻稿中说，氧化氮能把发动机加热到华氏3,000度，排出氮气和氧气每秒钟5,000英尺。
Nitrogen also contributes to climate change. Nitrous oxide (N2O) is a greenhouse gas 300 times more potent than carbon dioxide.
氮化物同样会引起气候变化。氮氧化物(一氧化二氮)是一种比二氧化碳强300倍的温室气体。
Nitrogen also contributes to climate change. Nitrous oxide (N2O) is a greenhouse gas 300 times more potent than carbon dioxide.
氮化物同样会引起气候变化。氮氧化物(一氧化二氮)是一种比二氧化碳强300倍的温室气体。
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