Microfiche: A 105x150 mm(4x6 inches) sheet of film that holds a large number of pages of information photographically reduced to very small size and readable only with a microfiche reader.

• 微缩菲林:存放大量书页影像的一片105x150毫米（4x6寸）的菲林。书页信息用照相法缩至很细小，只可以在微缩菲林阅读机上阅读。