含硫量是指原油中所含硫（硫化物或单质硫分）的百分数。
Refers to the sulfur content of sulfur in crude oil (sulphide or elemental sulfur) of the percentage.
夏季随着颗粒物污染的加重，含硫颗粒物的数目百分数增加，是北京市大气颗粒物污染的重要特征。
When aerosol pollution was getting worse in summer in Beijing, increasing number percentage of S-containing particles featured the atmospheric aerosol.
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