This large deformation is called for rock dilatancy if volume dilation only occurs owing to stress redistribution. 这种大变形如果仅是应力重分布引起的体积膨胀则称为岩石扩容。
Since the mechanical derivation of infinitesimal strain can't eliminate effect of rigid displacement, large deformation theory must be used in it. 采用无限小应变度量将不能消除刚体位移的影响，必须采用大变形理论。
