Powerfail: Only execute the command if init receives a power fail signal.

powerfail：只在init收到电源故障信号时执行命令。

youdao

Powerwait: Only execute the command if init receives a power fail signal, and wait until the process terminates before continuing to scan the inittab file.

powerwait：只在init收到电源故障信号时执行命令，并且等待进程终止后再继续扫描inittab文件。

youdao

Static sensor calibration process and procedure is introduced. A device for automatic sensor parameter calibration and power-fail protection based on 51 single chip computer was designed.

介绍了传感器静态标定过程及步骤，并设计了一种基于51单片机的传感器参数自动标定及掉电记录保护装置。

youdao

Mr.Obama also endorsed Geithner's request for power to seize financial institutions other than banks when they fail.

VOA: standard.2009.03.24

The doctors work to clean the wound, but, as too often is the case, the lights and power fail.

CNN: Heart-rending choices in Syrian warzone hospital

Do not run a generator indoors, if your power should fail.

FORBES: Important Cold Weather Safety and Tips

Additional feeder redundancy also ensures reserve capacity to sustain power if multiple feeders fail.

FORBES: Brave New World For Big Apple's Power Grid