plastic stiffness matrix

例句：

1. 1. The engineer used a plastic stiffness matrix to analyze the stress distribution in the structure.
   工程师使用一个塑料刚度矩阵来分析结构中的应力分布。
2. 2.The material science team developed a plastic stiffness matrix model to predict the mechanical behavior of composite materials.
   材料科学团队开发了一个塑料刚度矩阵模型，以预测复合材料的机械行为。
3. 3. The plastic stiffness matrix was used to optimize the design of the new car's suspension system.
   塑料刚度矩阵被用来优化新汽车悬挂系统的设计方案。