permanent deformation

例句：

1. 1. The earthquake caused a permanent deformation in the building's foundation.
   地震导致建筑物地基永久变形。
2. 2. The company has made several changes to its product line over the past year, resulting in apermanent deformation of its market position.
   公司过去一年对产品线进行了几次调整，这导致了其市场地位的永久性改变。
3. 3. The scientist discovered a new type of crystal that undergoes a permanent deformation when heated.
   科学家发现了一种晶体，它在加热时会发生永久性变形。