thermal bleaching

例句：

1. 1. The thermal conductivity of the material is high.
   这种材料的热导率很高。
2. 2.Thermal energy is a form of energy that can be converted into other forms of energy.
   热能是一种可以转化为其他形式的能量。
3. 3. In thermal engineering, the goal is to optimize the use of heat for various applications.
   在热工学中，目标是优化各种应用中的热量使用。