名词
中文翻译：Unknown
同义词：
['narrowband', 'narrow-band', 'narrow-spectrum']
例句：
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1. The radio station broadcasts on a narrower band than the previous one.
这个电台的广播频率比前一个电台更窄。
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2. The narrower band of light is difficult to detect.
较窄的光带难以探测。
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3. In the narrower band, the signal is weaker and more susceptible to interference.
在较窄的频带中，信号较弱且更容易受到干扰。