DC
Longman Dictionary of Contemporary English 5++LDOCE 5++DC /ˌdiː ˈsiː/ TEEthe abbreviation of direct current / direct current 的缩写,直流电 → ACnD.C. the abbreviation of District of Columbia in the US / District of Columbia 的缩写,〔美国的〕哥伦比亚特区
DC
DC /ˌdiː ˈsiː/

the abbreviation of direct current ⇨ AC
DC /ˌdiː ˈsiː/

the abbreviation of direct current ⇨ AC