It is obtained by changing the form of the structure, and then solution is reached by applying symmetry and anti-symmetry.
即变换结构的形式，然后运用结构的对称性或反对称性求解。
It is obtained by changing the form of the structure, and then solution is reached by applying symmetry and anti-symmetry.
即变换结构的形式，然后运用结构的对称性或反对称性求解。
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