通过完全匹配层方法对截断边界的吸收处理，解决了无限自由空间的计算问题。
A perfect matched layer method is used to resolve the numerical simulation in free space.
本文针对声波方程，给出了完全匹配层吸收边界方法。
Aimed at acoustic wave equation, the paper gave absorbing boundary condition by using perfectly matched layer.
将完全匹配层（PML）与矢量有限元方法（FEM）相结合对波导介质不连续性问题进行分析。
In this paper, dielectric discontinuities in waveguides are analyzed by finite element method (FEM) in combination with perfectly matched layer (PML) absorbing boundary condition (ABC) .
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