long suspension insulator

例句：

1. 1. The engineer used a long suspension insulator to support the heavy load.
   工程师使用长悬挂绝缘体来支撑重负载。
2. 2. The bridge was designed with long suspension insulators to reduce vibration.
   桥梁设计了长悬挂绝缘体以减少振动。
3. 3. The long suspension insulators were installed at the top of the tower to protect the electrical equipment.
   长悬挂绝缘体安装在塔顶，以保护电气设备。