Afterwards " fuliginous model " , " photochemical smog " after pollution, modern is being entered with " indoor air is polluted " the 3rd generation that is a mark pollutes period.
继“煤烟型”、“光化学烟雾型”
后，现
进入以“室内空气”为标志的第三时期。
Afterwards " fuliginous model " , " photochemical smog " after pollution, modern is being entered with " indoor air is polluted " the 3rd generation that is a mark pollutes period.
继“煤烟型”、“光化学烟雾型”后，现进入以“室内空气”为标志的第三时期。
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