endogas unit

例句：

1. 1. The endogas unit isresponsible for monitoring the air quality in theroom.
   内气体单元负责监测房间内的空气质量。
2. 2.The endogas unit was designed to improvethe efficiency of the ventilation system.
   内气体单元被设计用来提高通风系统的效率。
3. 3. The endogas unit is used tomeasure the concentration of pollutants inthe air.
   内气体单元用于测量空气中污染物的浓度。