物体的尺寸可以被大大缩小的胶片；用于储备；用放大系统可以观看这些材料

物体的尺寸可以被大大缩小的胶片；用于储备；用放大系统可以观看这些材料的英文翻译

基本释义

• film on which materials are photographed at greatly reduced size; useful for storage; a magnification system is used to read the material