thermal initiation

例句：

1. 1. The thermal initiation of the reaction is crucial for itsefficiency.
   反应的热启动对于其效率至关重要。
2. 2. Thermal initiation is aprocess that occurs when a material is heatedto a temperature above its melting point.
   热启动是一种当材料被加热到超过其熔点时发生的过程。
3. 3. Duringthermal initiation, the material undergoesa phase transition from solid to liquid.
   在热启动过程中，材料经历从固态到液态的相变。