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).
On our way home that night I looked down and saw that the necklace was not around my neck any more. I told Pierre. We rushed back to the palace and looked for it.We asked everyone there if they had found a necklace, but without luck. We couldn't find it;