nitrogen oxides
英
美
- 氧化氮
详细释义
名词 nitrogen oxide:
-
any of several oxides of nitrogen formed by the action of nitric acid on oxidizable materials; present in car exhausts
双语例句
- In the spark-ignition engine, recirculating some of the exhaust gas reduces the emission of nitrogen oxides.
在火花点火的发动机中，再循环的一部分废气减少了氧化氮的有害污染物。 - The concentrations of nitrogen dioxide and ozone also exceed the objectives for a few days in a year.
二氧化氮及臭氧的浓度，每年也有几天超出了空气质素指标。
相关词汇
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