Combined bevel surface

The utility model relates to a combined bevel surface with adjustable angle and length, which belongs to the field of physical teaching aids. The combined bevel surface is characterized in that bent plates with scales are symmetrically arranged on two sides of a slide plate and a bottom plate; one e...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	SHAN YUYAN
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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