line signal element

例句：

1. 1. The line signal element is crucial for the operation of the communication system.
   线路信号元件对于通信系统的运行至关重要。
2. 2.The engineer carefully inspected each line signal element to ensure its proper functioning.
   工程师仔细检查了每个线路信号元件，以确保其正常工作。
3. 3. The new design incorporates advanced line signal elements to improve network performance.
   新设计采用了先进的线路信号元件，以提高网络性能。