stress function

例句：

1. 1. The stress function of the material is critical in determining its mechanical properties.
   材料的压力函数对其机械性质至关重要。
2. 2.In stress analysis, the stress function is used to calculate the stress distribution under different loads.
   在应力分析中，应力函数用于计算不同载荷下的应力分布。
3. 3. The engineer needs to understand the stress function to design a safe and efficient structure.
   工程师需要了解应力函数来设计一个安全且高效的结构。