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Projective Pen / pen

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The sound could be convented into texts or images which be peojected out.It is convenient for people to write,as long as they are able to speak.

University

Wuhan University of Tecnology

Wuhan University of Tecnology
Wuhan, China

Yongjun Chen,
Wuhan University of Tecnology

Zhi Wang,
Wuhan University of Technology

Meng Zhang,
Wuhan University of Technology

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