几何光学 jǐhéguāngxué geometric optics Definitions Defs Origin Strokes Stroke Words Sentences Sents 几何光学 幾何光學 jǐhéguāngxué geometric optics the branch of optics that describes light propagation in terms of rays
几何光学 幾何光學 jǐhéguāngxué geometric optics the branch of optics that describes light propagation in terms of rays
