柯林斯詞典direct current (direct currents) 1. N-VAR A direct current is an electric current that always flows in the same direction. The abbreviation is also used. 直流電 Some kinds of batteries can be recharged by connecting them to a source of direct current. 有些型號的電池在接入直流電源時就能充電。 返回 direct current劍橋詞典electrical current that moves in one direction only 直流電 比較alternating current 返回 direct current