'真正的烟气是由氮氧化物(NOx)、氮、氧以及二氧化碳组成，'彼得介绍说。
Real flue gas is made up of nitrogen oxide (NOx), nitrogen, and oxygen as well as CO2, Peter tells me.
结论卟啉和铁卟啉对卷烟主流烟气中氮氧化物有明显的截留效果。
Conclusion porphyrin and ferriporphyrin presented significant effectiveness on removal of nitrogen oxides in tobacco smoke main stream.
催化裂化（FCC）装置再生器排放的烟气是炼厂最大的空气污染源，包括颗粒物、硫氧化物、氮氧化物和一氧化碳等。
The smoke emitting from FCC regenerator is the largest air pollution source in refining plant, which includes particulates, oxysulfides, oxynitrides, carbon monoxide, and so on.
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