用有限差分法计算静电场问题,两平行的无限大极板接地，在它们中间平行放置一半极大的极板，该极板接电位为V，求解该静电场的分布.-Electrostatic field problems using finite difference method, the two infinite parallel plates grounded, among them, placed parallel to the great half of the plate, the plate then potentia