The SIP updates of the 1990s andearly 2000s continued to focus on reducing volatile organic compounds and nitrogen oxides emissions.
国际研究组的研究结果显示,碳废气当中的另一种物质二氧化氮为这一过程提供了条件。
Research on the international research group showed that another material carbon- nitrogen dioxide gas which provides conditions for the process.
因此,臭氧的前体物,也就是挥发性有机化合物和二氧化氮的排放,同样也是PM2.5颗粒物的前体物。
Thus, the precursors of ozone,namely volatile organic compounds and nitrogen oxides emissions, are also precursors of PM2.5 particulates.
周一法院给了政府,直到4月24日制定准则草案解决非法的二氧化氮(NO2)污染水平。
Courts had given the government until Monday 24th April to set outdraft guidelines to tackle illegal levels of nitrogen dioxide(NO2) pollution.
二氧化氮(NO2)--具有刺激性气味的气体,可导致呼吸问题、肺部刺激,降低对呼吸道感染的抵抗力。
Nitrogen dioxide(NO2)- Harsh-smelling gas that can cause breathing problems, lung irritation, and lowers resistance to respiratory infections.
数据表明存在着一个二氧化碳、氩气和二氧化氮的稳定混合,以及比先前估计含量更高的氧气。
Data indicate a steady mixing of carbon dioxide, argon, and nitrogen dioxide, as well as higher amounts of oxygen than previously estimated.
(3)氮氧化物有刺激性气味的有毒气体,其中,经常接触到的氮氧化物主要是二氧化氮。
(3) Nitrogen oxides are toxic gases with pungent odors, andthe nitrogen oxides that are often exposed are mainly nitrogen dioxide.
同时对大气污染物进行监测,其中包括臭氧、PM10、PM2.5、二氧化氮和有机碳和碳元素。
Simultaneous monitoring will be carried out of atmospheric pollutants including ozone, PM10,PM2.5, nitrogen dioxide and organic and elemental carbon.
利用人口普查数据,调查人员还估计了调查对象接触某些空气污染物包括细颗粒物、二氧化氮和臭氧的程度。
Using Census data, the investigators also estimated the participants' exposure to certain air pollutants,including fine-particulate matter, nitrogen dioxide and ozone.
不过,这些污染物的产生使人们很难断定是否存在同二氧化氮分子本身相关的健康问题。
But the production of those notorious pollutants has made it difficult toestablish whether there are health problems connected with the NO2 molecules themselves.
结果表明,氮氧化物气体特别是二氧化氮可能会破坏蜜蜂依靠的气味识别过程来定位花卉食物资源。
The results indicate that NOx gases- particularly nitrogen dioxide- may be capable of disrupting the odour recognition process that honeybees rely on for locating floral food resources.
北京大学和耶鲁大学的研究人员测量了参与者环境中的二氧化硫、二氧化氮和小于10微米的微粒。
Researchers from Beijing's Peking University andYale University measured the amount of sulfur dioxide,nitrogen dioxide, and particulates smaller than 10 micrometers.
在2月2017和9月2019宣布这一消息之间,该报告发现伦敦中心区的路边二氧化氮浓度降低了36%。
Between that announcement in February 2017 and September 2019,the report found a 36 per cent reduction in roadside concentrations of nitrogen dioxide in London's central zone.
Taken together these additional programssignificantly reduced volatile organic compounds and nitrogen oxides emissions throughout the region, further contributing to improved ozone air quality.
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