By the method of electril charge projection the expression of charge density and field intensity on midperpendicular plane on a conductive plate are given.

利用电荷投影方法,给出导体薄板上电荷密度的表示式和中垂面上场强分布。

To realize the high efficiency of dernisting, thenew type cathode wires and anode tubes with superperformance were developed for increasing the current density and field intensity.

实现除雾高效化，关键在于研制高性能的新型阴极线和阳极管，提高电流密度和电场强度。