bainite hardening

例句：

1. 1. The steel undergoes bainite hardening during the cooling process.
   钢材在冷却过程中经历贝氏体硬化。
2. 2.The metal was subjected to bainite hardening for improved strength.
   为了提高强度，金属经历了贝氏体硬化处理。
3. 3.The process of bainite hardening is crucial in the manufacturing process.
   贝氏体硬化过程在制造过程中至关重要。