stain softening的用法和样例：
例句
- The implicit gradient model and the partial model are applied respectively to simulation of the strain softening.
分别应用隐式梯度模型和局部模型对混凝土应变软化进行了模拟。 - Using Damage Mechanics, it has been described that the stress-strain softening and the interweaving between the damage and fracture during the rupture of concrete.
本文用损伤描述了混凝土的应力应变软化效应及混凝土破坏过程中断裂与损伤的交织行为，揭示了混凝土破坏机理的实质。
