花燈集英語字典

nitrogen oxides

N 开头单词

常见例句

  • In the spark-ignition engine, recirculating some of the exhaust gas reduces the emission of nitrogen oxides.
    在火花點火的發動機中，再循環的一部分廢氣減少了氧化氮的有害汙染物。
  • The concentrations of nitrogen dioxide and ozone also exceed the objectives for a few days in a year.
    二氧化氮及臭氧的濃度，每年也有幾天超出了空氣質素指標。
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