[积累电荷]accumulative electric charge； 当向地下供给直流电的过程中，在任何不同电阻率的分界面上（如接地电极表面、矿体与围岩分界面、不同电阻率的岩石分界面上）都存在一种电荷，称为积累电荷。它的存在，引起了正常电场的畸变。积累电荷的符号与向地下供给的电流方向有关。当电流由高阻介质流向低阻介质时，在分界面上积累负电荷：相反，当电流由低阻介质流向高阻介质时，在分界面上积累正电荷。图为良导球体（ρ0〈ρ1）两侧的积累电荷。
这样，异常场便可借助于积累电荷来计算。
Thus anomaly field may be calculated by means of accumulational charge.
而在主破裂阶段，积累电荷的急速运动形成瞬间电流，激发了脉冲式的磁场异常。
While the magnetic pulses of shorter-period appeared at the last stage of the experiment, may be induced by instantaneous electric current of the accumulated charge during the cracking acceleration.
同时，每个液滴上的极化朝着相反电荷的方向积累。
At the same time, the poles of each drop were acquiring opposite electric charges.
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