Teaching appliance

The utility model discloses a teaching aid, and relates to the technical field of teaching aids. A rotating frame is arranged on the inner side of the supporting frame, sliding frames are symmetrically and fixedly connected to the left end and the right end of the upper surface of the rotating frame...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	WANG XUAN, WU YANGTING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADVERTISING APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND,DEAF OR MUTE BLASTING CRYPTOGRAPHY DIAGRAMS DISPLAY EDUCATION EDUCATIONAL OR DEMONSTRATION APPLIANCES ENGINEERING ELEMENTS AND UNITS FRAMES, CASINGS, OR BEDS OF ENGINES OR OTHER MACHINES ORAPPARATUS NOT SPECIFIC TO AN ENGINE, MACHINE, OR APPARATUSPROVIDED FOR ELSEWHERE GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GLOBES HEATING LIGHTING MECHANICAL ENGINEERING OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS PLANETARIA SEALS STANDS OR SUPPORTS THERMAL INSULATION IN GENERAL WEAPONS
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