光化学烟雾在世界各地的许多大城市里都有。
Photochemical smog is found in many large cities all over the world.
城市的光化学烟雾引起的大气污染越来越引起人们的关注。
There are increasing concerns on the air pollution caused by photochemical smog in cities.
与高层大气臭氧层不同的是，地面的臭氧是光化学烟雾的一个主要组成部分。
Ozone at ground level - not to be confused with the ozone layer in the upper atmosphere - is one of the major constituents of photochemical smog.
光化学烟雾的臭氧和氮氧化物和碳氢化合物在阳光下产生的反应。
Photochemical ozone and smog are created as nitrogen oxides and hydrocarbons react to sunlight.
我们用此模式计算了1983年8月中旬兰州市西固地区的光化学烟雾浓度。
Using the model and monitored data for photochemical smog in Xigu industrial area of Lanzhou city for 6 days of August, 1983, the numerical simulation was run.
本文介绍了光化学烟雾的形成机理，对人类、动植物等的危害并提出了预防措施。
The formation of photochemical smog, the reaction mechanism, the harm to our humanity, the zoology and botany and the preventive measure are introduced in this paper.
光化学烟雾是大气污染的一种，它不仅危害人们的健康，而且严重威胁着生态系统的平衡。
The photochemical fog is one kind of the atmosphere pollution. It endangers not only people's health but also the balance of the ecosystem.
以兰州西固地区为研究对象，建立了描述该地区光化学烟雾污染的大气质量模拟模式——柱子模式。
An air quality simulation model-column model for describing photochemical smog pollution at Xigu district in Lanzhou has been developed.
光化学烟雾和大气臭氧形成的重要前体物之一——非甲烷烃(NMHC)的排放受到研究者的热切关注。
As one important predecessor of photo-chemical smog and ozone, non-methane hydrocarbon's (NMHC) emission is paid great attention.
文章分析了光化学烟雾形成的原因，讨论了其形式的机理以及造成的危害，同时提出了防治光化学烟雾的一些对策。
The reasons of the formation of Photochemical Smoke is analyzed, its production harms brought about, meanwhile, came up with some countermeasures of preventing photochemical smoke is discussed.
作为空气污染的主要来源之一，易挥发有机物(VOCS)不仅是一次污染源而且还可能造成光化学烟雾等二次污染。
Volatile Organic Compounds (VOCS), as one of the major sources of air contaminations, can not only cause direct pollution, but also lead to secondary pollution, such as photochemistry smog.
这些污染物常常与其他有害物质，如铅、锌和地面臭氧一起出现。地面臭氧是汽车排气与太阳光一起发生光化学反应形成的一种烟雾成分。
The pollutants often occur with high levels of other toxins such as lead, zinc, and ground-level ozone, a component of smog formed by chemical reactions between car exhausts and sunlight.
这些污染物常常与其他有害物质，如铅、锌和地面臭氧一起出现。地面臭氧是汽车排气与太阳光一起发生光化学反应形成的一种烟雾成分。
The pollutants often occur with high levels of other toxins such as lead, zinc, and ground-level ozone, a component of smog formed by chemical reactions between car exhausts and sunlight.
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