Albumin(Albumen): Natural protein, soluble in water and most commonly found in the Albumins, the colloid used for certain dichromated sensitizes employed in photomechanical process.

• 蛋白:是一种天然蛋白质，可溶于水，在蛋白中最为常见。这种胶质在照相制版法里用以作重铬酸盐感光剂。