The kinematics of free electrons is described by the free Dirac equation, a four-dimensional system of partial differential equations.
自由电子的运动学由自由狄拉克方程——一个四维系统的偏微微分方程描述。
The underlying method is based on the simple wave solutions of a system of hyperbolic partial differential equations.
基本的方法是以双曲型偏微分方程组的简单波解为根据的。
This model consists the hyperbolic partial differential equations, boundary conditions and cyclical conditions of the system.
该模型由描述系统振动的双曲型偏微分方程组及相应的边界条件和周期性条件组成。
The models are characterised by an initial-boundary value problems of a system of nonlinear partial differential equations on the abnormal pressure and the paleotemperature of the formation.
盆地模拟的数学模型是一组关于地层超压和古温度的非线性偏微分方程初边值问题。
This paper presents the optimal linewise control problem of the system governed by elliptic partial differential equations from the osmotic problem for the basis of concrete dam.
本文从混凝土坝基渗流控制问题中抽象出由椭圆偏微分方程混杂问题所支配的系统的最优线态控制问题 。
The mathematical model can be described as a coupled system of nonlinear partial differential equations with moving boundary values.
其数学模型是一组多层对流扩散耦合系统的动边值问题。
The underlying method is based on the simple wave solutions of a system of hyperbolic partial differential equations.
复杂介质中地震波的传播多是通过求取单程或双程波动方程的数值解进行模拟的。
In this paper the railway track is considered as a double elastic system of both rails and sleepers and the vibration is described in detail with two partial differential equations.
本文将铁路轨道看作由钢轨和轨枕组成的双层弹性系统，用两个偏微分方程联立描述其振动。
In this paper the railway track is considered as a double elastic system of both rails and sleepers and the vibration is described in detail with two partial differential equations.
本文将铁路轨道看作由钢轨和轨枕组成的双层弹性系统，用两个偏微分方程联立描述其振动。
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