红外光谱 hóngwàiguāngpǔ infrared spectrum Origin Definitions Defs Strokes Stroke Words Sentences Sents 红外 紅外 hóngwài infrared infrared; infrared radiation or light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