electric field forceＳ 基本例句 电场力 电磁 An intense femtosecond laser pulse can provide an electric field strength which exceeds the electric field force of valance electrons that holds the electrons to their ionic cores. 飞秒激光脉冲提供了一种极强极高的电场能够超过价带电子的束缚力，使分子、原子的电子体系发生巨大变化。 cnki