The energy of electric field stored in the capacitor placed in an alternating electromagnatic field is concluded by using the principle of superposition and by starting with Maxwell equations.
本文运用叠加原理，从麦克斯韦方程的积分形式出发推导出在交变电磁场中储藏在电容器中的电场能量，并且指出了决定电容器电容数值的因素。
FD-TD is a numerical method to seek the solution of-Maxwell equation in time domain, which can be used to analyze the interactions between electromagnetic field and complicated objects.
时域有限差分(FD - TD)法是麦氏方程的差分形式的数值解法，用于求解任意复杂目标与电磁场的相互作用问题。
When the boundary conditions of electromagnetic quantities are satisfied, according to Maxwell field equation the expression for Joule heat resource power can be obtained.
在满足电磁量边界条件的情况下，根据导电体的麦克斯威尔方程，得到裂纹尖端附近焦耳热源功率的表达式。
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