sender unit insulated terminal

例句：

1. 1.The sender unit is responsible for transmitting signals over long distances.
   发送单元负责在长距离内传输信号。
2. 2. The insulated terminal is designed to prevent electrical short circuits.
   绝缘终端设计用来防止电气短路。
3. 3. The sender unit and insulated terminal are essential components of the communication system.
   发送单元和绝缘终端是通信系统的关键组成部分。