For every time step, the two dimensional Laplace's equation is solved by a finite-element method, so the potential distribution over the foil is given.
每一个时间步长，用有限元方法解二维的拉普拉斯方程，求出箔上的电势分布。
The equation of motion of two-electron atom in 3-D space is transformed into that of one-electron atom in 6-D space, subjected to generalized Coulombic potential.
将二电子原子在三维空间中的运动转化为单电子原子在六维空间中受广义库仑力作用的运动。
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