ul電子線的質量區分辦法
ul電(dian)子線(xian)(xian)(xian)(xian)的(de)(de)質(zhi)量(liang)區分辦法：1.分量(liang)好(hao)的(de)(de)ul電(dian)子線(xian)(xian)(xian)(xian)一(yi)般在(zai)規定的(de)(de)分量(liang)范圍(wei)內。2.合格的(de)(de)銅(tong)芯電(dian)線(xian)(xian)(xian)(xian)銅(tong)芯應(ying)為(wei)紫(zi)紅色、有(you)光澤、柔軟(ruan)。并且(qie)假銅(tong)芯線(xian)(xian)(xian)(xian)銅(tong)芯為(wei)紫(zi)黑色，偏黃或偏白，雜質(zhi)多，機(ji)械強度差(cha)，耐性(xing)差(cha)，稍用(yong)力(li)就會(hui)折斷，并且(qie)ul電(dian)子線(xian)(xian)(xian)(xian)內常呈現(xian)斷線(xian)(xian)(xian)(xian)現(xian)象(xiang)。檢查時，只需(xu)將(jiang)一(yi)端(duan)剝開2厘米，然后用(yong)白紙(zhi)在(zai)銅(tong)芯上搓一(yi)搓。假如白紙(zhi)上有(you)黑色物
2023-07-19