同軸電(dian)(dian)(dian)纜由里到外分(fen)為(wei)四(si)層:中心銅(tong)(tong)線(單股的實心線或多(duo)股絞合線),塑料(liao)絕緣體,網狀導(dao)電(dian)(dian)(dian)層和(he)電(dian)(dian)(dian)線外皮。中心銅(tong)(tong)線和(he)網狀導(dao)電(dian)(dian)(dian)層形成電(dian)(dian)(dian)流(liu)回路(lu)。因為(wei)中心銅(tong)(tong)線和(he)網狀導(dao)電(dian)(dian)(dian)層為(wei)同軸關(guan)系(xi)而(er)得名。同軸電(dian)(dian)(dian)纜傳導(dao)交流(liu)電(dian)(dian)(dian)而(er)非直(zhi)流(liu)電(dian)(dian)(dian),也就是說(shuo)每秒(miao)鐘會有好幾次(ci)的電(dian)(dian)(dian)流(liu)方(fang)向發...
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