Higher mathematics probability teaching presentation device

The utility model provides a higher mathematics probability teaching presentation device, relates to teaching equipment technical field, and it includes that L type support frame demonstrates the chamber on, demonstrates chamber and motor down, and the presentation device who forms the hourglass for...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	GAO YOUCAI
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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