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美国光学涂料试验中心和PA技术公司研制出一种在外力作用下会变色的塑料薄膜。在这种塑料薄膜上,涂有对不同波长的反射干涉涂层。在原封不动的情况下,
American Optical Coatings Test Center and PA Technologies developed a plastic film that will change color under external forces. This plastic film is coated with a reflective interference coating of different wavelengths. In the intact situation,