紧急备用动力 meaning in Chinese

emergency power

Ups system needs to be installed to provide emergency power for the instrumentation and trip systems ; an alternative power supply connection is needed for emergency lighting
安装ups系统来为仪表和跳车系统提供紧急备用动力；紧急照明需要一个单独的动力供应线路。
A ups system needs to be installed to provide emergency power for the instrumentation and trip systems ; an alternative power supply connection is needed for emergency lighting
安装ups系统来为仪表和跳车系统提供紧急备用动力；紧急照明需要一个单独的动力供应线路。