stringinsulator unit

例句：

1. 1.The string insulator unit is crucial for maintaining the integrity of the electrical circuit.
   串联绝缘单元对于维护电路完整性至关重要。
2. 2. The engineer designed a string insulator unit that could withstand high voltages.
   工程师设计了一种串联绝缘单元，能够承受高压。
3. 3.The string insulator unit was used to protect the cable from external interference.
   串联绝缘单元被用来保护电缆免受外部干扰。