1. 导(Dao)体(Ti)材(Cai)料(Liao)不(Bu)一(Yi)致(Zhi)
2. 因(Yin)为(Wei)材(Cai)料(Liao)不(Bu)一(Yi)致(Zhi),(?)导(Dao)致(Zhi)米(Mi)电(Dian)阻(Zu),(?)抗(Kang)拉(La)强(Qiang)度(Du)等(Deng)等(Deng)物(Wu)化(Hua)特(Te)性(Xing)不(Bu)一(Yi)致(Zhi),(?)使(Shi)用(Yong)时(Shi)尺(Chi)寸(Cun)要(Yao)换(Huan)算(Suan)。(?)
3. 绝(Jue)缘(Yuan)绝(Jue)热(Re)特(Te)性(Xing)基(Ji)本(Ben)一(Yi)致(Zhi),(?)但(Dan)是(Shi)铝(Lu)线(Xian)通(Tong)常(Chang)会(Hui)比(Bi)铜(Tong)线(Xian)的(De)电(Dian)气(Qi)性(Xing)能(Neng)略(Lue)差(Cha)。(?)