直流用反流继电器DC reverse-current relay
反向电流装置reverse-current device【电子】
电动式逆流继电器electrodynamic type reverse-current relay
逆电流开关reverse-current swithch【电】
逆电流继电器reverse-current relay
逆电流保护reverse-current protection【电】
逆电流时延继电器reverse-current timelag relay
反向电流清洗reverse-current cleaning【冶】