释义 |
fres·son process \freˈsōⁿ-\ noun Usage: usually capitalized F Etymology: after Henri T. Fresson died 1951 French agricultural engineer : a printing process in photography which is similar to the carbon process but with no transferring and in which development of the image occurs when pigment is removed from the unexposed portions of the image by washing the print surface with finely divided wet sawdust |