名词
中文翻译：窄带通过滤波器
同义词：
['narrow-band filter', 'narrow-band transmitter', 'narrow-band transducer']
例句：
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1. The narrow-band pass filter is used to block out unwanted frequencies in the audio signal.
窄带通过滤波器用于在音频信号中屏蔽不希望的频率。
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2. In radio engineering, a narrow-band pass filter is crucial for maintaining signal integrity.
在无线电工程中，窄带通过滤波器对于保持信号完整性至关重要。
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3. The narrow-band pass filter was designed to improve the signal-to-noise ratio of the communication system.
窄带通过滤波器被设计来提高通信系统的信噪比。