7
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耐火(huo)電(dian)(dian)線(xian)電(dian)(dian)纜(lan)的(de)結構和普通電(dian)(dian)線(xian)電(dian)(dian)纜(lan)基(ji)本(ben)相同(tong)，不同(tong)之處(chu)在于耐火(huo)電(dian)(dian)線(xian)電(dian)(dian)纜(lan)的(de)導(dao)體(ti)(ti)采用(yong)耐火(huo)性能好(hao)的(de)銅(tong)導(dao)體(ti)(ti)(銅(tong)的(de)熔點為1 083℃)...
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2022-11
電力電纜和架空導線(xian)和架空導線(xian)在電力系統（主干線(xian)）中(zhong)都(dou)是用于傳(chuan)送(song)和分配大功率(lv)電能的線(xian)路中(zhong)。...
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