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 reversible variable speed motor直流可逆变速电动机DCI desorption chemical ionization解吸化学电离DC-modulated AC/AC converters交-交变流器dcgrading-keratins microorganism角蛋白降解菌DC-reactive magnetron sputtering直流磁控溅射法DC high-voltage plasma generator直流高电压等离子发生器DC-plasma jet surface metallurgy等离子束表面冶金DC magnetron sputtering technology直流磁控溅射DC Power Distributing File Cabinet直流电源分配列柜DC power supplies for communications通信直流电源