دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: at ground level, one of the primary ingredients in smog and a poisonous form of pure oxygen. Smog ozone is created by sunlight acting on nitrogen oxides and volatile organic compounds in the air. Ozone high in the atmosphere forms the Earths main shield against the suns ultraviolet radiation.