Both frequency and voltage are important electric parameters in power system.
频率和电压是电力系统中的两个重要电气量。
Frequency is one of the most important operational state parameters of power system.
频率是电力系统运行最重要的状态量之一。
Frequency is one of the most important operational state parameters of power system.
频率是电力系统运行最重要的状态量之一。
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