Photochemical smog: Smog produced by action of solar radiation, especially of ultraviolet radiation, on exhausts from vehicles and industry.是什么意思_Photochemical smog: Smog produced by action of solar radiation, especially of ultraviolet radiation, on exhausts from vehicles and industry.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句