The process of diffusion of a coloured substance into and through film from beneath, thus producing an undesirable staining or colour change.
Proces difuzije obojene supstance u film i kroz film odozdo, čime se stvaraju nepoželjne mrlje ili promena boje.
Proces difuzije obojene supstance u film i kroz film odozdo, čime se stvaraju nepoželjne mrlje ili promena boje.
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