constant pressure gas thermometer

例句：

1. 1.The constant pressure gas thermometer was used to measure the temperature of the liquid.
   常压气体温度计被用来测量液体的温度。
2. 2.The constant pressure gas thermometer was used to monitor the temperature of the air.
   常压气体温度计被用来监测空气的温度。
3. 3.The constant pressure gas thermometer was used to detect the presence of a gas in the air.
   常压气体温度计被用来检测空气中的气体存在。