thermal ratio

例句：

1. 1.The thermal conductivity of the material is very high.
   这种材料的热导率非常高。
2. 2. The thermal energy in the sun is released into space.
   太阳中的热能被释放到太空中。
3. 3.Thermal radiation is a form of energy that travels through space.
   热辐射是一种通过空间传播的能量形式。