power network frequency

例句：

1. 1. The power network frequency is crucial for maintaining the stability of the electrical grid.
   电力网络频率对于维持电网的稳定性至关重要。
2. 2.In order to ensure safe operation, it's necessary to monitor the power network frequency closely.
   为了确保安全运行，需要密切监控电力网络频率。
3. 3. The power network frequency fluctuations can cause equipment failure and even damage to the power grid.
   电力网络频率波动可能导致设备故障，甚至损坏电网。