【摘要】 将二元的金属－介质非均匀复合物的等效介质理论推广到三元的情况，并由此计算出两种铝阳极氧化着色膜（Ａｕ－Ｃｕ－Ａｌ２Ｏ３，Ａｇ－Ｃｕ－Ａｌ２Ｏ３）试样的反射谱。与实验结果对比可看出，计算曲线与实验曲线大致相符，表明了该计算方法在一定范围和条件下的适用性，从而为多元复合表面材料光特性的理论研究提供了一种可行的方法更多还原

【Abstract】 A formula of the equivalent medium theory for three component metal dielectric inhomogeneous composited material is derived on the bases of the equivalent theory for two component metal dielectric inhomogeneous composite material. The new formula is used to calculate the reflectances of the sample of Au Cu Al 2O 3 and Ag Cu Al 2O 3 electrolytic coloured anodic aluminum oxide films. The calculated results are in agreement with the experimental results. It indicates that the new formula is useful at certain conditions.更多还原