二、屏蔽的作用
屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)就是(shi)(shi)對兩個(ge)(ge)(ge)(ge)空間區域(yu)之間進行金屬的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)隔離(li)，以控制(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)(chang)(chang)、磁(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)(chang)和(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)波(bo)由(you)(you)一(yi)(yi)個(ge)(ge)(ge)(ge)區域(yu)對另一(yi)(yi)個(ge)(ge)(ge)(ge)區域(yu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)感應(ying)和(he)輻(fu)射(she)。具(ju)體(ti)(ti)(ti)(ti)(ti)講，就是(shi)(shi)用(yong)(yong)(yong)(yong)(yong)屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)體(ti)(ti)(ti)(ti)(ti)將(jiang)(jiang)元部(bu)件、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路、組合件、 電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)或整個(ge)(ge)(ge)(ge)系(xi)統的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)干(gan)擾(rao)(rao)源包圍起來(lai)(lai)，防(fang)(fang)止(zhi)干(gan)擾(rao)(rao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)(chang)向(xiang)外(wai)擴(kuo)散(san)；用(yong)(yong)(yong)(yong)(yong)屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)體(ti)(ti)(ti)(ti)(ti)將(jiang)(jiang)接收電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路、設備或系(xi)統包圍起來(lai)(lai)，防(fang)(fang)止(zhi)它(ta)們受到外(wai)界(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)(chang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)影(ying)響。因(yin)為(wei)屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)體(ti)(ti)(ti)(ti)(ti)對來(lai)(lai)自導(dao)(dao)(dao)(dao)(dao) 線(xian)、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)、元部(bu)件、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路或系(xi)統等外(wai)部(bu)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)干(gan)擾(rao)(rao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)波(bo)和(he)內(nei)部(bu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)波(bo)均(jun)起著吸(xi)收能(neng)量(liang)(liang)（渦(wo)流損耗）、反(fan)射(she)能(neng)量(liang)(liang)（電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)波(bo)在(zai)(zai)屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)體(ti)(ti)(ti)(ti)(ti)上(shang)(shang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)界(jie)面(mian)反(fan)射(she)）和(he)抵(di)消(xiao)能(neng)量(liang)(liang)（電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)感應(ying) 在(zai)(zai)屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)層(ceng)(ceng)上(shang)(shang)產生(sheng)(sheng)反(fan)向(xiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)(chang)，可(ke)抵(di)消(xiao)部(bu)分(fen)干(gan)擾(rao)(rao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)波(bo)）的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)作用(yong)(yong)(yong)(yong)(yong)，所以屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)體(ti)(ti)(ti)(ti)(ti)具(ju)有(you)(you)(you)減弱干(gan)擾(rao)(rao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)功(gong)能(neng)。 （1）當(dang)(dang)干(gan)擾(rao)(rao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)(chang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)頻(pin)率(lv)較(jiao)(jiao)高(gao)(gao)時(shi)(shi)，利(li)用(yong)(yong)(yong)(yong)(yong)低(di)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻率(lv)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)金屬材(cai)(cai)(cai)料(liao)(liao)(liao)中產生(sheng)(sheng)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)渦(wo)流，形(xing)成(cheng)對外(wai)來(lai)(lai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)波(bo)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)抵(di)消(xiao)作用(yong)(yong)(yong)(yong)(yong)，從(cong)(cong)而(er)達到屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)效(xiao)果(guo)。 （2）當(dang)(dang)干(gan)擾(rao)(rao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)波(bo)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)頻(pin)率(lv)較(jiao)(jiao)低(di)時(shi)(shi)，要(yao)(yao)采用(yong)(yong)(yong)(yong)(yong)高(gao)(gao)導(dao)(dao)(dao)(dao)(dao)磁(ci)(ci)(ci)(ci)(ci)(ci)率(lv)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)材(cai)(cai)(cai)料(liao)(liao)(liao)，從(cong)(cong)而(er)使(shi)(shi)磁(ci)(ci)(ci)(ci)(ci)(ci)力線(xian)限制(zhi)在(zai)(zai)屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)體(ti)(ti)(ti)(ti)(ti)內(nei)部(bu)，防(fang)(fang)止(zhi)擴(kuo)散(san)到屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)空間去。 （3）在(zai)(zai)某些(xie)(xie)場(chang)(chang)(chang)(chang)合下(xia)，如果(guo)要(yao)(yao)求(qiu)(qiu)對高(gao)(gao)頻(pin)和(he)低(di)頻(pin)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)(chang)都具(ju)有(you)(you)(you)良(liang)好的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)效(xiao)果(guo)時(shi)(shi)，往往采用(yong)(yong)(yong)(yong)(yong)不(bu)(bu)同(tong)(tong)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)金屬材(cai)(cai)(cai)料(liao)(liao)(liao)組成(cheng)多(duo)(duo)層(ceng)(ceng)屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)體(ti)(ti)(ti)(ti)(ti)。 許(xu) 多(duo)(duo)人不(bu)(bu)了解(jie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)原理(li)，認為(wei)只(zhi)要(yao)(yao)用(yong)(yong)(yong)(yong)(yong)金屬做一(yi)(yi)個(ge)(ge)(ge)(ge)箱子，然后將(jiang)(jiang)箱子接地(di)，就能(neng)夠(gou)起到電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)作用(yong)(yong)(yong)(yong)(yong)。在(zai)(zai)這(zhe)(zhe)(zhe)(zhe)種(zhong)概念指(zhi)導(dao)(dao)(dao)(dao)(dao)下(xia)結(jie)果(guo)是(shi)(shi)失(shi)敗。因(yin)為(wei)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)與屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)體(ti)(ti)(ti)(ti)(ti) 接地(di)與否并沒(mei)有(you)(you)(you)關系(xi)。真(zhen)正影(ying)響屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)體(ti)(ti)(ti)(ti)(ti)屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)效(xiao)能(neng)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)只(zhi)有(you)(you)(you)兩個(ge)(ge)(ge)(ge)因(yin)素(su)：一(yi)(yi)個(ge)(ge)(ge)(ge)是(shi)(shi)整個(ge)(ge)(ge)(ge)屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)體(ti)(ti)(ti)(ti)(ti)表面(mian)必須(xu)是(shi)(shi)導(dao)(dao)(dao)(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)連續的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)，另一(yi)(yi)個(ge)(ge)(ge)(ge)是(shi)(shi)不(bu)(bu)能(neng)有(you)(you)(you)直(zhi)接穿透(tou)屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)體(ti)(ti)(ti)(ti)(ti)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)導(dao)(dao)(dao)(dao)(dao)體(ti)(ti)(ti)(ti)(ti)。屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)體(ti)(ti)(ti)(ti)(ti)上(shang)(shang)有(you)(you)(you)很 多(duo)(duo)導(dao)(dao)(dao)(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)不(bu)(bu)連續點，最主要(yao)(yao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)一(yi)(yi)類是(shi)(shi)屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)體(ti)(ti)(ti)(ti)(ti)不(bu)(bu)同(tong)(tong)部(bu)分(fen)結(jie)合處形(xing)成(cheng)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)不(bu)(bu)導(dao)(dao)(dao)(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)縫(feng)(feng)(feng)(feng)隙(xi)。這(zhe)(zhe)(zhe)(zhe)些(xie)(xie)不(bu)(bu)導(dao)(dao)(dao)(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)縫(feng)(feng)(feng)(feng)隙(xi)就產生(sheng)(sheng)了電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)泄漏(lou)，如同(tong)(tong)流體(ti)(ti)(ti)(ti)(ti)會(hui)從(cong)(cong)容(rong)器(qi)上(shang)(shang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)縫(feng)(feng)(feng)(feng)隙(xi)上(shang)(shang)泄漏(lou)一(yi)(yi)樣(yang)。解(jie)決這(zhe)(zhe)(zhe)(zhe) 種(zhong)泄漏(lou)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)一(yi)(yi)個(ge)(ge)(ge)(ge)方法(fa)是(shi)(shi)在(zai)(zai)縫(feng)(feng)(feng)(feng)隙(xi)處填充導(dao)(dao)(dao)(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)彈(dan)(dan)性(xing)(xing)(xing)材(cai)(cai)(cai)料(liao)(liao)(liao)，消(xiao)除不(bu)(bu)導(dao)(dao)(dao)(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)點。這(zhe)(zhe)(zhe)(zhe)就像在(zai)(zai)流體(ti)(ti)(ti)(ti)(ti)容(rong)器(qi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)縫(feng)(feng)(feng)(feng)隙(xi)處填充橡(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)(jiao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)道理(li)一(yi)(yi)樣(yang)。這(zhe)(zhe)(zhe)(zhe)種(zhong)彈(dan)(dan)性(xing)(xing)(xing)導(dao)(dao)(dao)(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)填充材(cai)(cai)(cai)料(liao)(liao)(liao)就是(shi)(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)密(mi)(mi)封(feng)(feng)(feng)襯(chen)(chen)墊(dian)(dian)(dian)。 在(zai)(zai) 許(xu)多(duo)(duo)文獻中將(jiang)(jiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)體(ti)(ti)(ti)(ti)(ti)比(bi)(bi)喻(yu)成(cheng)液體(ti)(ti)(ti)(ti)(ti)密(mi)(mi)封(feng)(feng)(feng)容(rong)器(qi)，似乎只(zhi)有(you)(you)(you)當(dang)(dang)用(yong)(yong)(yong)(yong)(yong)導(dao)(dao)(dao)(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)彈(dan)(dan)性(xing)(xing)(xing)材(cai)(cai)(cai)料(liao)(liao)(liao)將(jiang)(jiang)縫(feng)(feng)(feng)(feng)隙(xi)密(mi)(mi)封(feng)(feng)(feng)到滴水不(bu)(bu)漏(lou)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)程度才能(neng)夠(gou)防(fang)(fang)止(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)波(bo)泄漏(lou)。實際上(shang)(shang)這(zhe)(zhe)(zhe)(zhe)是(shi)(shi)不(bu)(bu)確切的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)。因(yin)為(wei)縫(feng)(feng)(feng)(feng)隙(xi)或 孔洞(dong)是(shi)(shi)否會(hui)泄漏(lou)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)波(bo)，取決于(yu)縫(feng)(feng)(feng)(feng)隙(xi)或孔洞(dong)相對于(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)波(bo)波(bo)長的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)尺寸。當(dang)(dang)波(bo)長遠大于(yu)開口尺寸時(shi)(shi)，并不(bu)(bu)會(hui)產生(sheng)(sheng)明(ming)顯的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)泄漏(lou)。因(yin)此(ci)，當(dang)(dang)干(gan)擾(rao)(rao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)頻(pin)率(lv)較(jiao)(jiao)高(gao)(gao)時(shi)(shi)，這(zhe)(zhe)(zhe)(zhe)時(shi)(shi)波(bo)長較(jiao)(jiao) 短(duan)，就需要(yao)(yao)使(shi)(shi)用(yong)(yong)(yong)(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)密(mi)(mi)封(feng)(feng)(feng)襯(chen)(chen)墊(dian)(dian)(dian)。具(ju)體(ti)(ti)(ti)(ti)(ti)說(shuo)，當(dang)(dang)干(gan)擾(rao)(rao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)頻(pin)率(lv)超(chao)過(guo)10MHz時(shi)(shi)，就要(yao)(yao)考(kao)慮使(shi)(shi)用(yong)(yong)(yong)(yong)(yong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)密(mi)(mi)封(feng)(feng)(feng)襯(chen)(chen)墊(dian)(dian)(dian)。 凡是(shi)(shi)有(you)(you)(you)彈(dan)(dan)性(xing)(xing)(xing)且導(dao)(dao)(dao)(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)良(liang)好的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)材(cai)(cai)(cai)料(liao)(liao)(liao)都可(ke)以用(yong)(yong)(yong)(yong)(yong)做電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)密(mi)(mi)封(feng)(feng)(feng)襯(chen)(chen)墊(dian)(dian)(dian)。按照(zhao)這(zhe)(zhe)(zhe)(zhe)個(ge)(ge)(ge)(ge)原理(li)制(zhi)造的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)密(mi)(mi)封(feng)(feng)(feng)襯(chen)(chen)墊(dian)(dian)(dian)有(you)(you)(you): 導(dao)(dao)(dao)(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)橡(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)(jiao)：在(zai)(zai)硅橡(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)(jiao)內(nei)填充占總重(zhong)(zhong)量(liang)(liang)70～ 80％比(bi)(bi)例(li)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)金屬顆粒，如銀(yin)粉(fen)(fen)、銅粉(fen)(fen)、鋁(lv)粉(fen)(fen)、鍍銀(yin)銅粉(fen)(fen)、鍍銀(yin)鋁(lv)粉(fen)(fen)、鍍銀(yin)玻璃球等。這(zhe)(zhe)(zhe)(zhe)種(zhong)材(cai)(cai)(cai)料(liao)(liao)(liao)保留(liu)一(yi)(yi)部(bu)分(fen)硅橡(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)(jiao)良(liang)好彈(dan)(dan)性(xing)(xing)(xing)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)特(te)性(xing)(xing)(xing)，同(tong)(tong)時(shi)(shi)具(ju)有(you)(you)(you)較(jiao)(jiao)好的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)導(dao)(dao)(dao)(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)性(xing)(xing)(xing)。 金屬編(bian)織(zhi)網：用(yong)(yong)(yong)(yong)(yong)鈹(pi)銅絲(si)、蒙乃爾絲(si)或不(bu)(bu)銹鋼絲(si)編(bian)織(zhi)成(cheng)管狀長條，外(wai)形(xing)很像屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)層(ceng)(ceng)。但它(ta)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)編(bian)織(zhi)方法(fa)與電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)層(ceng)(ceng)不(bu)(bu)同(tong)(tong)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)纜(lan)(lan)屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)層(ceng)(ceng)是(shi)(shi)用(yong)(yong)(yong)(yong)(yong)多(duo)(duo)根(gen)線(xian)編(bian)成(cheng)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)，而(er)這(zhe)(zhe)(zhe)(zhe)種(zhong)屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)襯(chen)(chen)墊(dian)(dian)(dian)是(shi)(shi)由(you)(you)一(yi)(yi)根(gen)線(xian)織(zhi)成(cheng)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)。打(da)個(ge)(ge)(ge)(ge)形(xing)象(xiang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)比(bi)(bi)喻(yu)，就像毛(mao)衣的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)袖子一(yi)(yi)樣(yang)。為(wei)了增強(qiang)金屬網的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)彈(dan)(dan)性(xing)(xing)(xing)，有(you)(you)(you)時(shi)(shi)在(zai)(zai)網管內(nei)加入橡(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)(jiao)芯(xin)。 指(zhi)形(xing)簧片：鈹(pi)銅制(zhi)成(cheng)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)簧片，具(ju)有(you)(you)(you)很好的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)彈(dan)(dan)性(xing)(xing)(xing)和(he)導(dao)(dao)(dao)(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)性(xing)(xing)(xing)。導(dao)(dao)(dao)(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)性(xing)(xing)(xing)和(he)彈(dan)(dan)性(xing)(xing)(xing)。 多(duo)(duo)重(zhong)(zhong)導(dao)(dao)(dao)(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)橡(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)(jiao)：由(you)(you)兩層(ceng)(ceng)橡(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)(jiao)構成(cheng)，內(nei)層(ceng)(ceng)是(shi)(shi)普(pu)通硅橡(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)(jiao)，外(wai)層(ceng)(ceng)是(shi)(shi)導(dao)(dao)(dao)(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)橡(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)(jiao)。這(zhe)(zhe)(zhe)(zhe)種(zhong)材(cai)(cai)(cai)料(liao)(liao)(liao)克(ke)服了傳統導(dao)(dao)(dao)(dao)(dao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)橡(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)(jiao)彈(dan)(dan)性(xing)(xing)(xing)差的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)缺點，使(shi)(shi)橡(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)(jiao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)彈(dan)(dan)性(xing)(xing)(xing)得(de)以充分(fen)體(ti)(ti)(ti)(ti)(ti)現。它(ta)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)原理(li)有(you)(you)(you)些(xie)(xie)像帶橡(xiang)(xiang)(xiang)膠(jiao)(jiao)(jiao)(jiao)(jiao)芯(xin)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)金屬絲(si)網條。 選擇使(shi)(shi)用(yong)(yong)(yong)(yong)(yong)什么種(zhong)類電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)密(mi)(mi)封(feng)(feng)(feng)襯(chen)(chen)墊(dian)(dian)(dian)時(shi)(shi)要(yao)(yao)考(kao)慮四個(ge)(ge)(ge)(ge)因(yin)素(su)：屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)效(xiao)能(neng)要(yao)(yao)求(qiu)(qiu)、有(you)(you)(you)無(wu)環境密(mi)(mi)封(feng)(feng)(feng)要(yao)(yao)求(qiu)(qiu)、安裝結(jie)構要(yao)(yao)求(qiu)(qiu)、成(cheng)本要(yao)(yao)求(qiu)(qiu)。不(bu)(bu)同(tong)(tong)襯(chen)(chen)墊(dian)(dian)(dian)材(cai)(cai)(cai)料(liao)(liao)(liao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)特(te)點比(bi)(bi)較(jiao)(jiao)，屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)按機理(li)可(ke)分(fen)為(wei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)場(chang)(chang)(chang)(chang)屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)、磁(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)(chang)屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)和(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)(ci)(ci)(ci)場(chang)(chang)(chang)(chang)屏(ping)(ping)(ping)(ping)(ping)蔽(bi)(bi)(bi)(bi)(bi)。
| 
中文版
