事实上，如果你观察带电粒子，在点电荷引起的电场中的运动，它也满足开普勒第二定律。
So, actually, if you look at motion of charged particles in an electric field caused by a point charged particle, it also satisfies Kepler's law, satisfies the same law.
在该薄板的电场中，电压的分布以及电流的流动，均取决于电位定律。
The distribution of voltage and the flow of electric current within a field of the sheet are governed by the laws of potentials.
电场的数学基础包括：库仑定律的积分形式、高斯定理的积分形式，拉普拉斯公式和泊松公式，散度定理。
Topics for the electric field mathematics include: The integral form of Coulomb's Law, Gauss's Law, the equations of Laplace and Poisson, and the divergence theorem.
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