low frequency induction heater

例句：

1. 1. The low-frequency induction heater is used to heat up the metal parts.
   低频感应加热器用于加热金属部件。
2. 2. This type of heater is commonly used in industrial processes.
   这种类型的加热器常用于工业过程中。
3. 3. The low-frequency induction heater was designed to improve energy efficiency.
   低频感应加热器被设计来提高能源效率。