是电磁相互作用的理论基础。

Is the theoretical basis for electromagnetic interaction.

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同时，电磁波导的辛分析也是构造对偶有限元的理论基础。

Moreover, symplectic analysis for electromagnetic waveguides provides the theoretical basis for constructing dual finite element method (FEM).

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本论文是以大地电磁测深为理论基础，深入分析国外同类仪器的数据处理过程，研究并开发了以人工场和天然场为场源的混场源数据处理软件。

The thesis based on magnetotelluric theory and analyzing the data processing of foreign same type instrument, study and design the data processing software of hybrid-source electromagnetic receiver.

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