在剪切带的位置，面内位移有显著的改变。
Positions where in-plane displacement changed remarkably corresponded to shear bands.
根据这两个条纹周期就可以得到物体的面内位移和倾斜的信息。
From that and using the deduced formula, the information of the displacement and titling of the object can be picked up.
在有限单元法中，形函数用于描述单元内位移分布，决定着单元的特性。
Shape function used for describing displacement distribution in element determines the speciality of the element in the finite element methods.
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