暗线光谱 ànxiànguāngpǔ dark-line spectrum Definitions Defs Origin Strokes Stroke Words Sentences Sents 暗线 暗線 ànxiàn dark line A dark absorption line in a spectrum光谱 光譜 guāngpǔ noun spectrum the band of colors or range of wavelengths produced when light is split by a prism or grating
