Domain decomposition method (DDM) is superior to the ordinary methods in solving complex domain problems.

区域分解方法在处理复杂求解区域问题上比一般常用方法要优越。

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The Domain Decomposition Method(DDM) in conjunction with FDFD and Modes Expansion was used to analyze the discontinuity of the rectangular recangular waveguide.

基于区域分裂法（DDM ）结合频域有限差分（FDFD）和波导模式展开求解矩形波导不连续性问题。

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