ring shaped induction furnace

例句：

1. 1.The ring-shaped induction furnace is used for melting metals.
   环形感应炉用于熔化金属。
2. 2.The ring-shaped induction furnace is a popular choice for metal processing.
   环形感应炉是金属加工中常用的选择。
3. 3.The ring-shaped induction furnace has been proven to be more efficient than other types of furnaces.
   环形感应炉已被证明比其他类型的炉子更高效。