名词
中文翻译：频率切换
同义词：
['frequency conversion', 'frequency modulation']
例句：
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1. The device can switch between different frequencies to meet the needs of different users.
该设备可以在不同的频率之间切换，以满足不同用户的需求。
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2. In communication systems, frequency switching is essential for maintaining signal integrity.
在通信系统中，频率切换对于保持信号完整性至关重要。
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3. The frequency switching system was designed to improve the reliability and efficiency of the transmission line.
这个频率切换系统被设计用来提高传输线路的可靠性和效率。