High concentration of sulphur dioxide, nitrogen, oxides and dust have long been known to be harmful. 人们早已知道,二氧化硫(E220)、氮、氧化物和尘埃浓度高是有害的。
This is because a decline in coal burning in the Northern Hemisphere has reduced emissions of sulphur dioxide aerosols. 这是由于北半球煤炭燃烧的减少已经减少了二氧化硫(E220)气溶胶的排放。
Tinci manufactures and installs systems to reduce sulphur dioxide emissions from coal-fired power stations and large industrial boilers. 天赐生产和安装用于降低燃煤发电站和大型工业锅炉二氧化硫(E220)排放量的系统。
These gases trap the sun's heat whereas sulphur dioxide cools the atmosphere. 这些气体阻隔了阳光中的热量,而二氧化硫(E220)起到使空气变凉的作用。
Sulphur dioxide(E220) has been regarded as one of the most serious of these pollutants. 二氧化硫(E220)一直被认为是这些污染物中最严重的一种。