power-on time

例句：

1. 1.The power-on time for this new computer is only 5 minutes.
   这台新电脑的开机时间只有5分钟。
2. 2. The power-on time of the new car is very short.
   这辆新车的启动时间非常短。
3. 3.The power-on time of the new machine is only a few seconds.
   这台新机器的启动时间只有几秒钟。