| 单词 | siderograph | 
| 释义 | † siderographn. Obsolete. rare.   A steel engraving, esp. one produced by siderography. ΘΚΠ society > leisure > the arts > visual arts > printmaking > engraving > intaglio printing > 			[noun]		 > steel engraving > an engraving siderograph1875 1875    E. H. Knight Amer. Mech. Dict. III. 2174/2  				Siderograph,..an engraving on steel. Specifically, the Perkins method. This entry has been updated (OED Third Edition, March 2016; most recently modified version published online December 2021). <  | 
	
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