English tense study link plate

The utility model discloses an english tense study link plate, it includes base, main clipboard and explanatory note board, and main clipboard passes through the bracing piece to be connected on the base, and the explanatory note board passes through the axis to be connected with main clipboard, and...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: SUN YESHENG
Format: Patent
Sprache:chi ; eng
Schlagworte:
Online-Zugang:Volltext bestellen
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