静电场的能量(energy of electrostatic field) 在恒定状态下，电荷和电场总是同时存在相伴而生的，电能 是定域在电场中的，可把电能公式用场强 E 表示出来。
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当电压施加在绝缘材料上，会产生一个静电场，电场极化材料内部的原子，使电容器能够储存能量。
When voltage is applied to a dielectric, an electrostatic field is created. The atoms within the material polarize , enabling the capacitor to store energy that can be quickly released on demand.
文章以偏心圆柱电容为例，通过构造一个满足边界条件的势函数，进而得到相应的静电场和电场能量密度。
With an example of eccentric column capacity, a potential function that satisfies the boundary conditions is formed to obtain corresponding electromagnetic field and its energy density.
电导通裂纹模型中的静电场对裂纹尖端扩展的能量释放率不作贡献。
The energy release rate for crack propagation depends only on the stress intensity factor and the material constants.
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