Many nonlinear optics materials with weak light were widely studied and used in optical storage, information processing, communication, and so on.

各种具有弱光非线性的材料已经广泛应用于光存储、信息处理、信息传输等各个方面。

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The hinge technology will have to be an engineering marvel, and making the folding crease of the screen invisible will pose problems in materials, optics, and touch technologies.

FORBES: Apple's Folding Future