自动断电
cutting off electricity automatically
Automatic Power-off
Automatic Power off
Apo
electrically trip-free
automatic shut off circuit
弹性承接装置
elastic supporting equipment
弹塑性减震耗能装置
elasto-plastic isolation device
弹射装置
ejecting system
launching equipments
aero-ejector
ejecting equipment
nitrogen launching system
ejection device
ejection mechanism
弹簧制动器的辅助放松装置
auxiliary release device for spring-brake actuator
弹簧式太阳能追日装置
spring-type solar tracker