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.
得到了一类二阶散度型椭圆方程很弱解的一个正则性结果。
A regularity result of a class of second order divergence form elliptic equation was obtained.
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