commutator

n device for altering the direction of an electric current 整流器; 换向器.

communicable, communicant, communicate, communicate with, communication, communication cord, communicative, communicator, communion, communique, communism, communist, communistic, community, community centre, community chest, community home, community singing, commutable, commutation, commute, commuter, compact, compact disc, compactly, compactness, companion, companion-way, companionable, companionship, company, comparability, comparable, comparative, comparatively, compare, compare to, compare with, compare...to, compare...with,