Terms for subject Electronics containing duplicate

English	Chinese
duplicate documents	副本单据
duplicate equipment	备用设备
duplicate insulator string	双重绝缘子串
duplicate relay	双套制中的备用继电器
duplicate service	两套馈电线双接户线
duplicate suspension set	双悬垂式绝缘子串［:组］
duplicate tension set	双耐张式绝缘子串［组］