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1.The step-up frequency changer is used to increase the voltage level of the signal.
步升频率变换器用于提高信号的电压水平。
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2. The step-up frequency changer was designed to improve the efficiency of the power system.
步升频率变换器被设计用来提高电力系统的效率。
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3.The step-up frequency changer is crucial for maintaining the stability of the electrical grid.
步升频率变换器对于维护电网的稳定性至关重要。