English teaching presentation device

The utility model provides an english teaching presentation device. English teaching presentation device includes shell, LED lamp, winding, is used for preventing roll up band offset's reference column group, pivot that the interval set up and with the twist grip that the pivot is connected, th...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	Wang Mian, Li Shuilin
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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