photoelastic sandwich method

例句：

1. 1.The photoelastic sandwich method is a powerful tool for studying the properties of materials under stress.
   光弹性夹层法是一种研究材料在应力下性质的强大工具。
2. 2.In this study, we used the photoelastic sandwich method to analyze the thermal conductivity of different materials.
   在本研究中，我们使用光弹性夹层法分析了不同材料的热导率。
3. 3. The results of the photoelastic sandwich method were consistent with those obtained from other testing methods.
   光弹性夹层法的结果与其他测试方法的结果一致。