real hardening curve

例句：

1. 1.The real hardening curve is a crucial factor in determining the material's strength and durability.
   真实硬化曲线是决定材料强度和耐用性的关键因素。
2. 2. The real hardening curve shows how the material changes from soft to hard over time.
   真实硬化曲线展示了材料从软到硬随时间变化的过程。
3. 3.The real hardening curve helps engineers predict the performance of materials under various conditions.
   真实硬化曲线帮助工程师预测材料在不同条件下的性能。