名词
中文翻译：光谱签名
同义词：
['spectral signature', 'spectral signature']
例句：
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1. The spectrum signature of the new drug is different from that of the old one.
新药的光谱特征与旧药不同。
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2. The researchers used a special technique to analyze the spectrum signature of the sample.
研究人员使用了一种特殊技术来分析样本的光谱特征。
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3. The scientists were able to identify the exact spectrum signature of the alien spacecraft.
科学家们能够准确地识别出外星飞船的光谱特征。