停电: power cut; power failure; se ...用: 40分钟跑完全程 run the course in 4 ...继电器: electric relay; relay停电用电源转换继电器: power off relay通用继电器: general purpose relay; general-purpose relay; generalpurposerelay专用继电器: definite purpose relay; special purpose relay; special-purpose relay拨轨用继电器: track relay测量用继电器: measuring relay场使用继电器: field application relay电报用继电器: relay for telegraph快速用继电器: fast-acting relay起动用继电器: starting guide relay仪表用继电器: instrument relay断续作用继电器: intermittent duty relay两级作用继电器: two-step relay特殊功用继电器: special purpose relay小型通用继电器: midget universal relay停电切换继电器: power off relay停电用开关: power off switch电动机控制用继电器: motor control relay纵横制电话交换机用继电器: relays for crossbar telephone switching systems继电器: [电工] electric relay; relay继电器闸, 继电器快门: relay shutter电用: electric metal安全继电器: safety relay
