| 单词 | polypantograph | 
| 释义 | > as lemmaspolypantograph ΚΠ 1870    Rep. U.S. Commissioners Paris Universal Expos. 1867 462 		(heading)	  				Engraving—polypantograph. a1877    E. H. Knight Pract. Dict. Mech. II. 1763/1  				Polypantograph, an instrument on the principle of the pantograph, by which a number of similar designs may be simultaneously executed upon a metallic plate or roller from a single pattern. Invented by M. Gavard, Paris. < as lemmas | 
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