Magician please the audience selected a card, and then will come up with a small LED light, please check the audience clearly does not have any special lights.
魔术师请观众选出了一张牌，之后拿出一个会发光小灯，请观众检查清楚，小灯并无任何特别。
The new application of the white LED, the structure and principles of Card Light as well as its application in life are described.
主要介绍了白光led的新应用——卡灯的结构和原理，及其在生活中的应用。
The new application of the white LED, the structure and principles of Card Light as well as its application in life are described.
主要介绍了白光led的新应用——卡灯的结构和原理，及其在生活中的应用。
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