名词
中文翻译：真空管
同义词：
['vacuum tube', 'vacuum oscillator']
例句：
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1. The cavity magnetron is used in the television set to produce high-quality images.
真空管在电视机中用于产生高质量的图像。
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2. In radio communication, a cavity magnetron is used to amplify weak signals.
在无线电通信中，使用真空管来放大微弱的信号。
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3. The cavity magnetron is an essential component of many modern electronic devices.
真空管是许多现代电子设备的必备组件。