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Double feed systems work well if the grid voltage and frequency is very stable.
当网格电压和频率很稳定时，双馈系统工作的很好。
youdao
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It is an effective work standard of radio frequency voltage.
它是一种行之有效的射频电压工作标准。
youdao
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It is an effective work standard of radio frequency voltage.
它是一种行之有效的射频电压工作标准。
youdao