According to the fundamental equation of steady current field, the corresponding functional equation is obtained by use of the linear differential operator.
从稳定电流场基本方程出发，通过定义线性微分算子，推导出与之等价的泛函方程。
For its high energy, steady working voltage and large current, the silver-Zinc cell was widely used in the field of missiles, satellites and so on in the past decades.
由于锌银电池具有比能量高、工作电压稳定、可大电流放电等优点，几十年来，在导弹、卫星等众多领域得到了广泛应用。
Using the uniqueness theorem for boundary value problem of steady magnetic field and Weierstrass theorem, the unique choice of image electric current is discussed.
利用稳恒磁场边值问题解答的唯一性定理和维尔斯特拉斯定理讨论了镜象电流选择的唯一性。
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