求翻译：对于线弹性材料，式（1）的函数关系应为线性关系，并考虑到残余应力与残余应变的关系也为线性关系，可一般性地表示成材料本身含有的残余应力部分，与外载荷产生的应变所对应的应力部分之和，即矩阵表达成如式（2）形式：是什么意思？

Linear elastic material, a function of type (1) should be a linear relationship, and taking into account the relationship between residual stress and residual strain for the linear relationship, can in general be expressed as the residual stress of the material itself contains part of the outer load

For line-elastic material, (1) should be a function is a linear relationship, taking into account any residual stress and the relationship between residual strain also is a linear relationship, can be expressed in general terms, to a material itself contains a residual stress, and strain out the loa

Regarding the line elastic material, type (1) functional relation should be the linear relations, and considered the residual stress and the remaining strain relations also are the linear relations, but generally expressed material itself includes sum of the stress part which with the outside load t

For linear elastic materials, (1) function should be a linear relationship, and taking into account the relationship between residual stress and residual strain is a linear relationship, generally as part of residual stress of the material itself, and the external load and strain the stress part of,

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