twin insulator strings

例句：

1. 1. The twin insulator strings are used to connect the two ends of a transmission line.
   双绝缘线用于连接输电线路的两端。
2. 2. The twin insulator strings are essential for maintaining the stability and safety of power grids.
   双绝缘线对于保持电力网的稳定性和安全性至关重要。
3. 3. The twin insulator strings are designed to withstand high voltage and current, making them ideal for use in power transmission and distributionsystems.
   双绝缘线设计用来承受高压和大电流，因此非常适合用于电力传输和分配系统。