line pair

例句：

1. 1. The engineer used a line pair to connect the two pieces of equipment.
   工程师使用线对连接了两台设备。
2. 2.The line pair was responsible for transmitting signals between the two stations.
   线对负责在两个站之间传输信号。
3. 3. In this project, we need to ensure that the line pairs are properly connected and tested before deployment.
   在这个项目中，我们需要确保在部署之前正确连接和测试线路对。