3路输出直流-直流变换器
three output DC-DC converter
不对称交流－直流电镀
asymmetric AC-DC electroplating
交流/直流电弧法
AC／DC arc discharge method
交流-直流变换装置
alternating continuous-current commutating machine
交流直流干电池
alternative currentdirect currentall dry
交流直流转换
alternating current to direct current
小电流交直流电子负载
low current AC and DC electronic load