The procedure is based on a finite difference time domain(FDTD) scheme. The numerical results will offer theoretic reference for streamer discharge simulation or geometry optimization of reactor.

数值计算运用时域有限差分（FDTD）法，数值模拟结果为以后的反应器流光放电模拟及结构优化提供依据。

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Geometry optimization calculations indicate that all the six fluorinated ethylene cations have planar structures, in contrast with the non planar D2 structure of the ethylene cation.

结果表明，与具有非平面结构的乙烯阳离子不同，六种氟代乙烯阳离子都只具有平面结构；

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Geometry optimization calculations indicate that all the six fluorinated ethylene cations have planar structures, in contrast with the non planar D2 structure of the ethylene cation.

结果表明，与具有非平面结构的乙烯阳离子不同，六种氟代乙烯阳离子都只具有平面结构；

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