wireless transformer

例句：

1. 1.The wireless transformer is used to convert AC power into DC power for use in electronic devices.
   无线变压器用于将交流电转换为直流电，供电子设备使用。
2. 2. The wireless transformer was designed to improve the efficiency of the power transmission system.
   无线变压器被设计用来提高电力传输系统的效率。
3. 3. The wireless transformer has become an essential component in modern communication systems.
   无线变压器已成为现代通信系统中不可或缺的组件。