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）.

n[C]
a piece of equipment that changes the form of something, especially so that it can be more easily used
　a converter that allows you to view digital television on your old TV
→catalytic converter