An encoding method for archival storage of color film by the use of phase grating 用位相光栅作彩色透明片的档案存贮
Their characteristics are quite different from traditional archival photographic film or paper work, so their preservation raised a new problem for archival departments. 这些磁性载体档案的特性完全不同于常规的照相胶片档案和纸文件档案,因此其保存成为档案部门的一个新课题。