Platform capable of preventing step missing

The utility model discloses a platform capable of preventing step missing, and belongs to the technical field of platforms, the platform further comprises a step, a teacher's desk is fixedly connected to the top of the step, and symmetrical warning mechanisms are arranged on the front side of t...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: XIONG GUOLEI, ZHANG YUFENG, YANG YIRAN
Format: Patent
Sprache:chi ; eng
Schlagworte:
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