DCCn.更改设计委员会(设计概念的改变)
dcabbr.直流(=direct current)abbr.哥伦比亚特区(=District of Columbia)
DC-brushless centrifugal fan无刷直流离心式风机
DC-link voltage pumping-up直流侧电压泵升
DC electroluminescent phosphor直流电致发光荧光粉
DC long-distance power supply直流远供
dc electrical quantities output直流输出
DC filtered cathodic vacuum arc磁过滤真空阴极弧
DC moving coil round instrument直流动圈式圆形电表
DC traction power supply system直流牵引供电系统