law of cooling

例句：

1. 1. The temperature drops as the air cools down.
   随着空气变冷，温度下降。
2. 2.The heat transfer in a fluid is governed by the law of cooling.
   流体中的热传递受冷却定律的支配。
3. 3.The thermal conductivity of a material is determined by its molecular structure and the law of cooling.
   材料的导热性由其分子结构决定，并受冷却定律的影响。