名词
中文翻译：有用的光谱范围
同义词：
['utility spectrum', 'useful range', 'useful bandwidth']
例句：
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1. The new device has a useful spectral range of 400-600 nm.
这款新设备具有400-600纳米的有用光谱范围。
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2. The research team found that the useful spectral range of the laser was limited by its wavelength.
研究团队发现，激光的有用光谱范围受到其波长的限制。
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3. The scientist used a spectrometer to measure the useful spectral range of the material.
科学家使用分光仪测量了材料的有用光谱范围。