With the background of lateral stability of non-range-spacer through bowstring arch, analytical approximations are derived in this paper using energy variational approach.
通过对系杆拱桥作用在拱肋上的荷载性质进行了分析，采用能量法推导出无横撑下承式系杆拱桥侧倾稳定临界荷载的一般公式。
The ground state energy of weak-coupling polaron in a parabolic quantum dot considering the phonon dispersion is calculated using the squeezed-state variational approach.
在声子色散影响下利用压缩态变分法计算了抛物量子点中弱耦合极化子的基态能量。
According to the principle of the minimum potential energy the deformation of single tension pile and pile groups was analyzed using a modified variational approach.
根据最小势能原理，使用修正变分法来分析抗拔单桩和抗拔群桩的变形。
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