In the process of developing a photo, a latent image can only come out when the photosensitive material is developed. 在沖洗相片過(guò)程中，感光材料經(jīng)顯影處理后才會(huì )出現潛影。
Packaging films for photosensitive materials include inner and outer packaging films. 感光材料包裝膜分為內包裝膜和外包裝膜。
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