[N-COUNT 可数名词]变压器 A transformer is a piece of electrical equipment which changes a voltage to a higher or lower voltage.
Oxford
trans·form·er/trænsˈfɔːmə(r); NAmEtrænsˈfɔːrmər/nouna device for reducing or increasing the voltageof an electric power supply, usually to allow a particular piece of electrical equipment to be used 变压器transformertransformerstrans·form·er/trænsˈfɔːmə(r); NAmEtrænsˈfɔːrmər/