emergency: n.突然事件;紧急情况,非常时期。 take emergency measures 采取紧急措施。 be prepared [ready] for all emergencies 以备万一。 in this emergency 在这个危急时刻。 meet emergencies 采取应急措施。 in [on] an emergency =in case of emergen
Specification for automatic change - over contactors for emergency lighting systems 紧急照明系统用的自动转换接触器规范
2.
Emergency lighting system 应急照明系统
3.
Low - voltage switchgear and controlgear for industrial use - automatic change - over devices for emergency lighting systems 工业用低压开关设备和控制装置.应急照明系统用自动转换装置