pole line hardware

例句：

1. 1. The pole line hardware was installed by the electric company.
   电力公司安装了杆线硬件。
2. 2. The new pole line hardware is designed to improve safety on the construction site.
   新的杆线硬件设计用来提高施工现场的安全性。
3. 3. The pole line hardware needs to be regularly inspected and maintained to ensure its durability.
   杆线硬件需要定期检查和维护，以确保其耐用性。