在一些情况下，单层的丝网屏蔽衬垫就够用了，但是在一些特殊的情况下，像EMP，要用七层镀锡铜包钢丝才可以。
In some cases a single mesh layer will be sufficient but in extreme cases, such as EMP, up to seven layers of TCS will be used.
适用七股以上的铜包铝、铜包钢、裸铜线、漆包线、合金线镀锡线绞合。
Applied to the stranding of seven units of copper winding aluminum, copper winding steel, bare copper cable, painting winding wire, alloy wire and tin plated wire.
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