heat loss due to combustible substance in slag

例句：

1. 1. The hot air risesand causes the heat loss.
   热气上升导致热量散失。
2. 2. The car's enginegenerates a lot of heat, whichneeds to be lost quickly.
   汽车发动机产生很多热量，需要迅速散失。
3. 3. Inorder to conserve energy, we needto reduce the heat loss from our buildings.
   为了节约能源，我们需要减少建筑物的热量损失。