Using new technology, clean coal plants sharply reduced the number of sooty particles spewed into the air, as well as gases like sulfur dioxide and nitrous oxide.
使用新技术，清洁煤电厂大大减少了煤烟粒子散发到大气中的数量，以及像二氧化硫和一氧化氮等气体。
2
For making the atmosphere quality better, sulfur content of gasoline product must be reduced.
为改善大气质量，就必须降低成品汽油的硫含量。
3
The analysis shows that total sulfur and basic nitrogen contents of the refined diesel have been greatly reduced and the complex adsorbent has no affection on other properties of diesel.