弹性条件下的拉伸速率和由于压实作用而不断变化的沉积物密度满足一定的散度方程。
The stretching rate and the density of sediments which is continuously changed due to the pressure of overlying deposit under the elastic conditions can be described by certain divergence equation.
实际上，Maxwell方程组，描述了这两个场的旋度和散度。
Maxwell's equations actually tell you about div and curl of these fields.
讨论可测系数的二阶非线性非散度型抛物型方程组在多连通区域上的初-斜微商边值问题。
This paper mainly deals with an initial-oblique derivative problem for nonlinear nondivergent parabolic systems of second order equations with measurable coefficients in a multiply connected domain.
本文所讨论的问题是散度形式的变系数热方程近似能控和零能控的成本估计。
We are concerned with estimates of the cost of controllability of parabolic equations in divergence form.
为使速度散度保持为零，在泊松方程中给速度散度一个特殊的处理。
In order to keep the divergence of velocity being zero, a special treatment of divergence term in Poisson equation is proposed.
文中利用某类函数，得到了一类非线性散度型方程及方程组古典解的局部估计。
In this paper, the local estimates for the classical solutions of a class of equations and systems in divergence form is obtained by certain kind of function.
本文推导了计及重力效应运动媒质中的次声波动方程和用速度的散度表示的分层大气模型下的频散方程；
The equation of infrasonic wave taking into account the gravitational effect in moving media is derived, with multi-layer atmospheric model.
本文推导了计及重力效应运动媒质中的次声波动方程和用速度的散度表示的分层大气模型下的频散方程；
The equation of infrasonic wave taking into account the gravitational effect in moving media is derived, with multi-layer atmospheric model.
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