Automatic governing test of voltage and frequency for main generator.
主发电机电压，频率自动调节试验。
Automatic governing test of voltage and frequency for main generator (emergency generator).
主发电机(应急发电机)电压、频率自动调节试验。
Automatic governing test of voltage and frequency for main generator (emergency generator).
主发电机(应急发电机)电压、频率自动调节试验。
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