当在频率-空间域进行计算时，相对于纯粹的时间-空间域有限差分算法有计算效率高、成像方便的优点。

Contrasted with the methods in time space domain, this one has high computation efficiency and is prone to image, because all its computation is in frequency space domain.

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本论文的研究内容围绕时域有限差分方法(FDTD)的改进算法一时域多分辨分析(MRTD)算法展开。

This paper focused on the improved algorithm of finite difference time domain (FDTD) method, which is named multi-resolution time domain (MRTD).

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本论文的研究内容围绕时域有限差分方法(FDTD)的改进算法一时域多分辨分析(MRTD)算法展开。

This paper focused on the improved algorithm of finite difference time domain (FDTD) method, which is named multi-resolution time domain (MRTD).

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