不对称交－直流电源
asymmetry AC-DC power supply
低压直流电源设备
low-voltage DC power equipment
附加直流电源
additional DC power supply
高频开关直流电源系统
High Frequency Switching DC Power Supply System
高压大功率直流电源
high voltage and high power DC supply
高压直流电源
high-voltage DC power-supply
恒流高压直流电源
constant high-voltage DC power source
晶闸管式直流电源
thyristor type direct current power supply
宽范围高压直流电源
wide range high voltage power supply
数控直流电源
digital-controlled direct current power
通信直流电源
DC power supplies for communications