hot quenching

例句：

1. 1.The steel was hot quenched toimprove its hardness and strength.
   钢材经过高温淬火以提高其硬度和强度。
2. 2. Hotquenching is a process used inmanufacturing to quickly cool metals down.
   热淬火是一种制造过程中使用的快速冷却金属的方法。
3. 3. During hot quenching, themetal is rapidly cooled from a hightemperature to a lower one.
   在热淬火过程中，金属从高温迅速冷却到低温。