acrographyyoudaoicibaDictYouDict[acrography 词源字典]
"The art of incising a design onto a surface from which a cast is made, converting the incised lines into a relief design on a metal printing plate", Mid 19th cent.; earliest use found in London Catalogue Books. From acro- + -graphy, apparently with reference to the image being in relief.[acrography etymology, acrography origin, 英语词源]