The three-dimensional exact solutions of the displacement, electric potential, magnetic potential, stress, electric displacement and magnetic induction of equilibrium problems are also obtained.
并得到了平衡问题的扇形板和扇形环板在两种边界条件下的位移、电势和磁势，应力、电位移和磁感应强度的三维精确解。
The size of reversing electric potential may be changed and equilibrium between reactance electrical potential and reversing electrical potential may be broken by manual.
通过人为改变换向电势大小，打破电抗电势与换向电势平衡。
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