line synchronizing pulse

例句：

1. 1.The line synchronizing pulse is used to control the speed of the transmission line.
   同步线脉冲用于控制传输线的传输速度。
2. 2.The line synchronizing pulse was used to detect the presence of a fault in the power system.
   使用同步线脉冲来检测电力系统中的故障。
3. 3. The line synchronizing pulse was used to improve the accuracy of the communication system.
   使用同步线脉冲来提高通信系统的准确性。