Plane and anylytical geometry curve demonstrator

The utility model provides a plane analytical geometry ellipse and hyperbola demonstrator which is mainly composed of a straight ruler with a slotted hole, two hollow rivets embedded in the slotted hole, a center sliding sleeve and a rope, wherein, both ends of the straight ruler are provided with m...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	LI SHUZENG, MENG QINGYAN, TONG ZHIXIAN
Format:	Patent
Sprache:	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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