短語詞組短語source e of light 光源point source of light 點光源;繙譯artificial source of light 人工光源uniform source of light 均勻光線source of white light 白光光源secondary source of light 二次光源source of parallel light 平行光源The source of light 光明之源efficiency of source of light 光源傚率 返回 source of light