在常用数值求解方法中，有限元法以其通用性强，适用于结构复杂、多重介质复杂场域求解，且求解精度高等优点而被广泛用于电器电场的数值求解。
Among the numerical simulation methods, the finite element method (FEM) is widely to solve the electric field with complex structure and multi-dielectric medium with high precision.
文章从麦克斯韦方程组出发，利用纵向场分量法，详细地推导了强引导磁场下等离子体波导中电磁场分量的表达式。
In this paper, the expressions of the electromagnetic field components in a plasma waveguide immersed in a strong longitudinal magnetic field are derived in detail from the Maxwell's equations.
此外，直接积分法还可正确地计算外部流场速度分布。这是偶强梯度法不能完成的。
In addition, the present direct integral method can be used to evaluate the velocity distribution for external flow field correctly where the method of gradient cannot be used at all.
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