This paper starts with the comparative research on the colors of the various metal inorganic substances and ends with the conclusion of 18 rules of the color change.
本文对众多金属无机物的颜色进行比较研究，得出了18个变化规律，并从理论上论证了这些规律的成立。
2
The advantages of organic materials over inorganic materials are high fluorescent efficiency, wide selection of colors and the easiness in the fabrication of large films.
与无机物相比，有机发光材料具有高荧光效率、颜色的广泛选择性及易成膜性。
3
The advantages of organic materials over inorganic materials are high fluorescence efficiency, wide selection of emission colors and the ease in fabrication of large size films.