光化学烟雾 [环境] photochemical smog ; smog
光化学烟雾模式 photochemical smog model
光化学烟雾效应 effect of photochemical smog
洛杉矶光化学烟雾事件 los angeles photochemical smog episode
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.
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.
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