In photography, the essential light sensitive coating on ph otographic film comprising gelatine and silver salts.在照相技术中, 覆盖在照相底片上的由胶和银盐组成的感光物质.Melt the gelatine powder with hot water. Stir into raspberry.鱼胶粉与热水调至溶解, 拌入覆盆...
In photography, the essential light sensitive coating on ph otographic film comprising gelatine and silver salts.在照相技术中, 覆盖在照相底片上的由胶和银盐组成的感光物质.Use a little milk to soak the gelatine powder first.吉利丁先用少许牛奶浸泡开....powdered ...