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電(dian)(dian)(dian)磁(ci)(ci)屏(ping)蔽(bi)主要屏(ping)蔽(bi)的(de)(de)(de)是電(dian)(dian)(dian)磁(ci)(ci)波(bo)。一(yi)些電(dian)(dian)(dian)子原(yuan)件(jian)或(huo)設備(bei)在正常工作狀態下會產(chan)生(sheng)電(dian)(dian)(dian)磁(ci)(ci)波(bo)，從而會干(gan)擾(rao)其(qi)(qi)它(ta)(ta)電(dian)(dian)(dian)子設備(bei)；同理，其(qi)(qi)也會被其(qi)(qi)它(ta)(ta)設備(bei)的(de)(de)(de)電(dian)(dian)(dian)磁(ci)(ci)波(bo)干(gan)擾(rao)。電(dian)(dian)(dian)磁(ci)(ci)屏(ping)蔽(bi)體對(dui)來(lai)自導線、電(dian)(dian)(dian)纜、元部(bu)件(jian)、電(dian)(dian)(dian)路或(huo)系統(tong)等外部(bu)的(de)(de)(de)干(gan)擾(rao)電(dian)(dian)(dian)磁(ci)(ci)波(bo)和(he)內部(bu)電(dian)(dian)(dian)磁(ci)(ci)波(bo)均起著吸收能(neng)(neng)(neng)量(liang)(liang)（渦流損耗）、反射能(neng)(neng)(neng)量(liang)(liang)（電(dian)(dian)(dian)磁(ci)(ci)波(bo)在屏(ping)蔽(bi)體上的(de)(de)(de)界面反射）和(he)抵消(xiao)能(neng)(neng)(neng)量(liang)(liang)（電(dian)(dian)(dian)磁(ci)(ci)感應在屏(ping)蔽(bi)層上產(chan)生(sheng)反向電(dian)(dian)(dian)磁(ci)(ci)場，可抵消(xiao)部(bu)分干(gan)擾(rao)電(dian)(dian)(dian)磁(ci)(ci)波(bo)）的(de)(de)(de)作用(yong)，所以屏(ping)蔽(bi)體具有減弱干(gan)擾(rao)的(de)(de)(de)功能(neng)(neng)(neng)。銘玨(jue)金屬生(sheng)產(chan)的(de)(de)(de)電(dian)(dian)(dian)磁(ci)(ci)屏(ping)蔽(bi)專(zhuan)用(yong)銅箔(bo)是理想(xiang)的(de)(de)(de)屏(ping)蔽(bi)體材料，它(ta)(ta)具有純度高、整體一(yi)致(zhi)性好、表(biao)面光潔、易貼付等特點。