Attenuated Total Reflection (ATR) method was used to study the properties of metal film in the early days, it has become a powerful tool for the study of properties of many kinds of media.

• 衰减全反射法（简称ATR方法）最早应用于对金属薄膜特性的研究,后来逐渐成为研究各类介质光学性质的有力工具。