The portable interactive display board is suitable for mandarin popularization and education in old, young and poor areas

The portable interactive display board is suitable for mandarin popularization and education in old, young and poor areas. The basic conditions of old, young and poor areas are poor, and almost no advanced equipment capable of improving mandarin and basic culture education through sound, images, ima...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	GUO HONGJIANG, CAO GAOYANG, ZHAO YONGSHENG, CAO GAOFEI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADVERTISING CRYPTOGRAPHY DISPLAY DISPLAYING EDUCATION LABELS OR NAME-PLATES PHYSICS SEALS SIGNS
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