The low frequency shielding characteristics of a chiral spherical shell is studied and a group of curves for design is given.

分析了手征介质球壳的低频电磁屏蔽效应，给出了一组手征电磁屏蔽球壳的设计曲线。

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Shielding may be essential in a switching system if a mixture of low current, high voltage, and high frequency signals are present.

如果切换系统中会混合出现小电流、高电压和高频信号，屏蔽则非常关键。

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Changing neither the length of overlapping gap nor the Angle of turning corner can assure the rise in shielding effectiveness, rather the specific changing trend is related to frequency range.

改变车身缝隙搭接部分的长度和拐角角度并不能保证提高其屏蔽效能，具体变化趋势与频率范围有关。

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