bell ringing transformator

例句：

1. 1. The bell ringing transformator is used to control the flow of water in the garden.
   铃铛响变阻器用于控制花园中水流的流动。
2. 2.The bell ringing transformator was designed to improve the sound quality of the alarm system.
   铃铛响变阻器被设计用来提高警报系统的音质。
3. 3. The bell ringing transformator is a small device that can be attached to a door or window to alert people outside.
   铃铛响变阻器是一种小型装置，可以安装在门或窗户上，以提醒外面的人。