As the fundament of variable electrical equipments, power supplies realize power changing and delivery.

电源设备用以实现电能变换和功率传递，是各种电子设备正常工作的基础。

youdao

As the fundament of variable electrical equipments, power supplies realize power changing and delivery.

电源设备用以实现电能变换和功率传递，是各种电子设备正常工作的基础。

youdao