direct electric current英 [dəˈrekt ɪˈlektrɪk ˈkʌrənt]美 [dəˈrekt ɪˈlektrɪk ˈkɜːrənt]网络 直流电网络英英释义nounan electric current that flows in one direction steadilySynonym:direct currentDC双语例句