second-order theory 二次理论 ; 二阶理论
second-order theory of mind 二阶心理理论
simple second-order theory 一次二阶矩理论
second order viscoelastic theory 二阶粘弹理论
second-order approximation theory 二级近似理论
second-order transformation theory 二级相变理论
second-order shock-expansion theory 二次冲波膨胀波理论
second order RS perturbation theory 二阶RSPT微扰方法
Using the second order perturbation theory, the formulae of vibrational force constants are derived in part one.
运用二阶微扰理论，本文第一部分首先计算了高阶力常数的表达式。
Finally, an example on applying the second order perturbed guidance theory for all-way guidance is given.
最后以全程制导为例，说明二阶摄动制导理论的应用。
The physical process of diffraction by planar gratings'is analysed, based on the generalized second-order coupled-wave theory.
本文从推广的二阶耦合波理论出发，对平条纹面光栅衍射这一物理过程进行分析。
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