light signal circuit

例句：

1. 1.The new light signal circuit has greatly improved the efficiency of our communication system.
   新的光信号电路大大提高了我们通信系统的效率。
2. 2.The engineer used a special light signal circuit to detect the fault in the cable.
   工程师使用一种特殊的光信号电路来检测电缆中的故障。
3. 3.The light signal circuit was designed to transmit data over long distances without losing any information.
   光信号电路被设计用来在长距离内传输数据而不丢失任何信息。