单词 | heliozincography |
释义 | > as lemmasheliozincography heliozincography n. Brit. /ˌhiːlɪə(ʊ)zɪŋˈkɒɡrəfi/ , U.S. /ˌhilioʊzɪŋˈkɑɡrəfi/ (see quots.).Π 1903 Nature 19 Nov. 60 Two new methods have now superseded photozincography; one of these, ‘heliozincography’, was worked out by the Ordnance Survey... The first method consists in reproduction direct on a sensitised zinc plate in contact with a reversed negative. 1936 H. S. L. Winterbotham Key to Maps xix. 196 We have seen above how work from paper may go direct to the zinc by a process known as vandyking. To do the same with a negative and a sensitized sheet of zinc is known as heliozincography. < as lemmas |
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