power supply voltage

例句：

1. 1. The power supply voltage must be stable to ensure the device's reliability.
   电源电压必须稳定以确保设备的稳定性。
2. 2. The power supply voltage is critical for the operation of the electronic equipment.
   电源电压对于电子设备的运行至关重要。
3. 3. The power supply voltage can vary significantly depending on the region and time of use.
   电源电压可以根据地区和使用的时间和显著变化。