因此一般认为在秋冬季，大气中羰基化合物的来源主要是汽车尾气，而夏季则是汽车尾气和大气光化学反应。
Therefore, vehicular exhaust was the primary source in autumn and winter while both vehicular exhaust and photochemical reactions were the major sources in summer.
这些反应增加了不完全燃烧的可能性，更有可能释放未燃尽和光化学活性碳氢化合物到大气中。
These reactions increase the probability of incomplete combustion and are more likely to release uncombusted and photochemically active hydrocarbon compounds into the atmosphere.
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.
模式除考虑污染物在大气中的输送、弥散过程外，还加入了光化学反应过程。
Except for considering the processes of transfer and diffusion of air pollution matter, the model covers the photochemical reaction effects as well.
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.
本文研究了二硝基芘异构体在模拟大气条件下的光化学反应，结果表明反应速率呈二级动力学关系。
Photo reaction of dinitropyrenes in simulated atmospheric conditions was studied. The photochemical reaction rate was found to be of the second order.
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.
研究了1-硝基芘在模拟大气条件下的光化学反应。
Potoreaction of particle-bound 1-nitropyrene under simulated atmospheric condition has been studied.
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.
研究表明，颗粒物对光化学过程的抑制造成了大气氧化能力的降低，是近地面臭氧浓度减少的可能原因。
The results indicate that impacts of atmospheric particles on photochemistry and oxidation ability of atmosphere are responsible for the reduction of the observed surface ozone concentration.
前人对于POP的光化学行为研究主要集中于水相和大气相中，本研究则主要研究POP在环境界面上的光化学行为。
Previous studies focus on the photodegradation of POP in aqueous phase and in atmosphere. The photolytic behavior of POP at the interfacial environment is investigated in this study.
甲烷的光化学氧化可能是大气对流层有机过氧化物的重要来源。
Photooxidation of CH4 probably was an important source of organic peroxides in the troposphere.
甲烷的光化学氧化可能是大气对流层有机过氧化物的重要来源。
Photooxidation of CH4 probably was an important source of organic peroxides in the troposphere.
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