Research and Use of Laser Pointer in Multimedia Te..

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Research and Use of Laser Pointer in Multimedia Teaching | #laser pointer #laser engraver #green laser pointer #blue laser pointer

Research and Use of Laser Pointer in Multimedia Teaching

Research and Use of Laser Pointer in Multimedia Teaching

FIELD OF THE INVENTION The present invention relates to the technical field of wireless control laser pointer and multi-user spot recognition technology for projectors, and in particular to a wireless control laser 20000mw that can identify users and can be used in combination with multipl

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