converter
convertor, ns
1 (physics 物)
(a) device for converting alternating current to direct current or vice versa 变流器, 逆变器.
(b) device that changes the wavelength of a radio signal 变频器.
2 vessel for refining molten metal 转炉(冶炼金属的容器).
Of course he is. He's very successful. He's made lots of records. They broadcast a programme of his music last month on the radio. Why don't you come on Saturday? I think you'd enjoy it.