oce hardening

例句：

1. 1. The steel is undergoing oce hardening to improve its strength.
   钢材正在经历淬火硬化以提高其强度。
2. 2.The process of oce hardening is crucial for the durability of the material.
   淬火硬化过程对材料耐用性至关重要。
3. 3.During oce hardening, the metal undergoes a significant transformation in its properties.
   在淬火硬化过程中，金属会发生显著的性质变化。