three-wire line

例句：

1. 1. The electrical engineer designed a three-wire line for the new substation.
   这位电气工程师为新变电站设计了一条三线制线路。
2. 2. In this project, we need to install a three-wire line to connect all the devices.
   在这个项目中，我们需要安装一条三线制线路来连接所有设备。
3. 3. The three-wire line is essential for ensuring safe and reliable communication between different devices.
   三线制线路对于确保不同设备之间安全、可靠的通信至关重要。