直流电

• Design of digital - controlled direct current source
  数控直流电流源的设计
• Automatic exchange for dc and ac supply
  直流电源与交流供电能自动转换。
• Direct - current resistive volt ratio boxes
  直流电阻电压比例箱.第1次修改
• Road vehicles . motorcycles . direct current flasher units
  道路车辆.摩托车.直流电闪光装置
• 02a : dc current signal input range scope
  0 2a :直流电流信号输入量程范围
• Design of dc motor driver based on lmd
  18200组件的直流电机驱动器的设计
• Direct current power supply converter for coal mine
  矿用直流电源变换器
• Method of improving way of magnetizing for dc motor stator
  直流电机定子充磁方式的改进方法
• These are for one hundred volts , ac and dc
  这些适用一百伏特的电压，交流电和直流电都可以。