(also ˈring main ) noun
( technical ) an arrangement of wires which supply electricity to several different places in a room or building
(also ˈring main ) noun
( technical ) an arrangement of wires which supply electricity to several different places in a room or building
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005