On the basis of the elementary equation of atmosphere motion, we consider the nonlinear couples as an external origin, and derive a strong coupled formed KdV equation.

在大气运动基本方程的基础上，考虑南北风场平流效应引起的非线性耦合作为外源，在耦合项非线性逐渐增强的情况下。

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The artical introduces elementary equation, boundary and initial conditions of model of equivalent conduction heat transfer, physical property prarameters processing and the method of value solving.

介绍了等效传导传热模型的基本方程、界条件和初始条件、性参数的处理以及数值求解方法等。

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This paper starts from the physical processes of cascade speed control system and derives several groups of elementary electromagnetic equation, dynamic block diagrams, and matrix equations.

本文从串级调速控制系统的物理过程出发，推求出几组基本的电磁方程、动态结构图及矩阵方程。

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