heat-flow unit

例句：

1. 1.The heat-flow unit is used to measure the amount of heat energy flowing through a system.
   热量流单元用于测量通过系统的热量能量。
2. 2. The heat-flow unit was designed to improve the efficiency of solar panels.
   热量流单元被设计用来提高太阳能板的效率。
3. 3. The heat-flow unit can be used to monitor the temperature of a building's interior.
   热量流单元可以用来监测建筑物内部的温度。