名词
中文翻译：光谱类型
同义词：
['spectral classes', 'spectral groups']
例句：
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1.The classification of stars into spectral types is crucial for understanding their evolution.
将星星分类为光谱类型对于理解它们的演化至关重要。
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2.This study aims to classify the spectral types of galaxies based on their colors.
这项研究旨在根据颜色将星系分类为不同的光谱类型。
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3. The spectral analysis revealed that the star was a G-type, indicating it had a blue color.
光谱分析显示，这颗星是G型，意味着它有蓝色的颜色。