In winter, there is a dense smog layer over Lanzhou city.
冬季兰州城市上空形成浓厚的烟雾层。
The existence of the smog layer increases the stability of the urban boundary layer.
烟雾层的存在增加了城市边界层的稳定性。
The average optical parameters of the urban smog layer over Lanzhou are calculated by using the solar observation data on the two different levels.
利用一次外场试验中两个不同高度上的太阳辐射观测资料,计算了城市烟雾层大气平均光学特性参数。
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.
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.
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。
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