nitrogen-oxide analyzer

例句：

1. 1. The new model of the nitrogen oxide analyzer has been released.
   新型的氮氧化物分析仪已经发布。
2. 2. The nitrogen oxide analyzer is used to measure the concentration of nitrogen oxides in the air.
   氮氧化物分析仪用于测量空气中氮氧化物的浓度。
3. 3. The nitrogen oxide analyzer was used to detect the presence of harmful gases in the industrial area.
   氮氧化物分析仪被用来检测工业区有害气体的存在。