irrotational strain

例句：

1. 1.The material undergoes an irreversible change in its shape under the influence of external forces.
   该材料在外力作用下发生不可逆的形状变化。
2. 2. The stress distribution in the material is determined by the irreversible deformation process.
   材料的应力分布由不可逆变形过程决定。
3. 3. In the case of a crack, the irreversible strain can lead to significant structural changes.
   在裂纹情况下，不可逆的应变会导致结构的重大变化。