Four reasonable geometries on the potential energy hypersurface of glycine and water system are considered with the global minimum being a cyclic double-hydrogen bonded structure.
在这个体系中，我们找到了甘氨酸和水作用的四种稳定构型，其中最稳定的构型是一个环状的双氢键结构。
By using 3-d isoparametric element, the global stiffness matrix equation for the piezoelectric laminate is obtained on the bases of minimum principle of total potential energy.
由于最小势能原理，建立了单元刚度矩阵和压电材料的整体刚度方程。
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