介质常数，电容率一种物质抵制在其内部建立的电场能力的量度 A measure of the ability of a material to resist the formation of an electric field within it.
电泳分离法分离物质，尤指分离蛋白质的方法，以及基于在电场作用下处于胶粒悬浮状态的各个成分的运动速度基础上进行的分子结构分析方法 A method of separating substances, especially proteins, and analyzing molecular structure based on the rate of movement of each component in a colloidal suspension while under the influence of an electric field.
磁控管一种微波管，它里面的发热阴极发出的电子受到磁场和电场的影响，从而产生能用于雷达和微波炉微波辐射 A microwave tube in which electrons generated from a heated cathode are affected by magnetic and electric fields in such a way as to produce microwave radiation used in radar and in microwave ovens.
