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单词	calotype
释义	calotype noun cal·​o·​type ˈka-lə-ˌtīp  : a photographic process by which a large number of prints could be produced from a paper negative also : a positive print so made Example Sentences Recent Examples on the Web Daguerreotypes were unique artefacts; Talbot’s calotype was a paper negative that could yield any number of positive copies. The Economist, 2 June 2018 Word History Etymology Greek kalos beautiful + -type (as in daguerreotype) First Known Use 1841, in the meaning defined above
随便看	du bois-rey du bois-reymond principle Du Bois-Reymond's law Du Cange Du Chaillu du fors l'hon Du Gard du jour du Maurier Du Pont du pont de ne Du Pont de Nemours Du Vigneaud du-rag duad duads dual dual banking dual carriageway dual carriageways dual citizenship dual denominated dual energy x-ray absorptiometry dual highway dual ignition

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