Bar chart curve plotter is used in statistics teaching

The utility model relates to a bar chart curve plotter is used in statistics teaching, including L type drawing assistance board, drawing rule, L type drawing assistance board includes diaphragm and vertical plate, the drawing rule includes a transverse ruler and two linear foots, the transverse rul...

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Bibliographische Detailangaben
1. Verfasser:	Xia Zhihai
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACCESSORIES FOR WRITING OR DRAWING ARTICLES FOR WRITING OR DRAWING UPON BUREAU ACCESSORIES PERFORMING OPERATIONS TRANSPORTING WRITING OR DRAWING IMPLEMENTS
Online-Zugang:	Volltext bestellen
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