laser heat treatment

例句：

1. 1.The laser heat treatment process is used to harden steel parts.
   激光热处理过程用于使钢部件变硬。
2. 2. The laser heat treatment method has been shown to improve the durability of materials.
   激光热处理方法已被证明可以提高材料的使用寿命。
3. 3. During laser heat treatment, the material is heated and then rapidly cooled to achieve the desired properties.
   在激光热处理过程中，材料被加热然后迅速冷却以获得所需的性质。