3路输出直流-直流变换器
three output DC-DC converter
变磁极性直流发电机
variable magnet polarity DC generator
直流负极接地双线制
negative grounded DC two-wire system
直流-直流变换器
DC-DC converter
DC to DC converter
DC/DC converter
direct-current direct-current converter
直流-直流换流器
direct-current transformer
Wagner直流极化法
Wagner DC polarization method
不对称交流－直流电镀
asymmetric AC-DC electroplating