Once the formation of photochemical smog, affection is a wide range.And its harmfulness has caused enormous threat for city environment, human health, ecological balance.

 
  • 光化學(xué)煙霧一旦形成,影響范圍廣,其危害性已對城市環(huán)境、人體健康、生態(tài)環(huán)境平衡造成巨大危脅。
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