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。
Then using the superposition principle of well group, the analytic theory of single drainage hole is spread to multiple drainage holes in the element.
然后，应用井群的叠加原理，将单个排水孔的解析理论推广到单元内多个排水孔的情况。
Using the principle of state superposition, we study the relationship between shiping and vacuum state by means of removing vacuum state from squeezed states.
本文利用态叠加原理移去压缩光场态中的真空态，研究了真空态与压缩的关系。
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