天体光谱学 tiāntǐguāngpǔxué astronomical spectroscopy Definitions Defs Origin Strokes Stroke Words Sentences Sents 天体光谱学 天體光譜學 tiāntǐguāngpǔxué astronomical spectroscopy The study of the spectra of celestial bodies in order to determine their chemical composition and physical properties
天体光谱学 天體光譜學 tiāntǐguāngpǔxué astronomical spectroscopy The study of the spectra of celestial bodies in order to determine their chemical composition and physical properties
