nitrogen oxides

• 氧化氮

nitrogen oxides的英文翻译是什么意思，词典释义与在线翻译：

英英释义

名词 nitrogen oxide:

1. any of several oxides of nitrogen formed by the action of nitric acid on oxidizable materials; present in car exhausts

nitrogen oxides的用法和样例：

例句

1. 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。
2. 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。