air inflation indicator

例句：

1. 1.The air inflation indicator is used to measure the amount of air in a space.
   空气膨胀指示器用于测量空间中的空气量。
2. 2.The air inflation indicator showed that there was an increase in air pressure.
   空气膨胀指示器显示了气压的增加。
3. 3. The air inflation indicator was used to monitor the health of the building's heating system.
   空气膨胀指示器被用来监测建筑物供暖系统的健康状况。