根据变分法和ABCD定律，导出了非线性锥形梯度折射率棒透镜中高斯光束的成像公式。
Imaging formulas of Gaussian beams in nonlinear conical GRIN rod lenses are derived from the variational method and the ABCD law.
采用线性组合算符法和变分法研究了电场对抛物量子线中强耦合极化子性质的影响。
The influence of electric field on the properties of strong-coupling polaron in parabolic quantum wires are studied by using linear combination operator and variational methods.
基于变分法提出了一个求解雷诺边界条件下有限长轴承油膜力的快速算法，用此算法对一个三油叶不平衡轴承—转子系统的非线性动力学行为进行了一系列的分析。
Based on the free boundary theory and the variational method, a fast and accurate model for the calculation of the fluid-film forces under the Renolds boundary condition is presented.
通过数值方法直接求解非线性薛定格方程以及变分法近似求出了束缚于一个“凹槽”中的单个空间光孤子解，这种光孤子的存在没有阈值范围，且总是稳定传输的。
By means of the variational approximation and direct simulations we demonstrate the one-soliton state trapped in a channel has no existence threshold and is always stable.
利用拉格朗日变分法原理，分析了非对称非线性定向耦合器的开关特性。
We use the Lagrange variational approach to study the switching characteristics of asymmetric nonlinear directional couplers.
借助并矢分析，分别采用加权余量法和变分法，推导出了三维非线性各向异性静磁场的矢量位有限元方程的一般计算公式。
The 3d finite element vector potential equations of non-linear anisotropic magnetostatic field have been derived in a pithy style by dyadic analysis.
借助并矢分析，分别采用加权余量法和变分法，推导出了三维非线性各向异性静磁场的矢量位有限元方程的一般计算公式。
The 3d finite element vector potential equations of non-linear anisotropic magnetostatic field have been derived in a pithy style by dyadic analysis.
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