名词
中文翻译：高频
同义词：
['high-speed', 'high-pitched', 'high-frequency equipment']
例句：
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1. The high-frequency oscillator is used in radar systems.
高频振荡器用于雷达系统。
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2. High-frequency waves travel much faster than sound waves.
高频波比声波传播得更快。
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3.The high-frequency signals were transmitted over the radio waves.
高频信号通过无线电波传输。