这个例子看起来违背了上文“屏蔽体一定不能有电流”的准则，但是这里屏蔽电缆并非用来屏蔽芯线，而是通过这种特殊接法抵消干扰。
In this case, which seems to violate the "no shield current" rule for receiver circuits, the concentric cable is not used to shield the center lead; instead, the geometrv produces cancellation.
此外，应该使用屏蔽电缆，例如同轴或同轴三芯，连接高阻装置或信号源和开关卡。
Also, shielded cabling, such as coax or triax, should be used to make connections from the high impedance devices or signal sources to the switch card.
通过对褶皱芯材结构的电磁屏蔽实验数据和计算公式所得结果作对比分析，评价了该种结构对屏蔽效能的有益影响。
The data via shield efficiency experiments and calculated by the formula are compared and the profitable effect on shield efficiency of the structure are also evaluated.
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