特征方程之根？称为本征值或特征值。
The roots? Of the characteristic equations are known as eigenvalues, or characteristic values.
本文在位移元本征应力模式基础上引进调节参数，同时，利用矩阵H对角化方法计算杂交元应力子空间的本征应力模式，然后由此方便有效地计算特征值，从而大大提高了计算效率。
The parameters are introduced based on the natural stress modes of the displacement element, and the method of matrix H diagonalization was introduced to improve the calculation of the natural.
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