Think political affairs teaching and use speech board

The utility model provides a think political affairs teaching and use speech board, the rotary integrating sphere includes a fixed support, the face, face elevating system, the blackboard eraser, blackboard eraser vertical moving mechanism, blackboard eraser horizontal migration mechanism and contro...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	GEN SUO, FAN LIJUAN, BAI LIYING, WEN GUOZHENG, WANG YAN, YUE DONGQING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADVERTISING APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND,DEAF OR MUTE CRYPTOGRAPHY DIAGRAMS DISPLAY EDUCATION EDUCATIONAL OR DEMONSTRATION APPLIANCES GLOBES PHYSICS PLANETARIA SEALS
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