Demonstration device of reaction between water or chlorine gas and precious metal

The invention relates to a demonstration device of reaction between water or chlorine gas and precious metal. The demonstration device is composed of an iron stand platform, a spring clamp, a file frame and a hand guard file provided with a protective handle. The spring clamp is specially used for f...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	MAO SHILI
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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