" The one hint of the future to be found among still familiar older senses of the word, such as "a thin skin or membranous coating" or "an abnormal thin coating on the cornea, is the sense of film used in photography, a sense referring to a coating of material, such as gelatin, that could substitute for a photographic plate or be used on a plate or on photographic paper.

在當(dāng)中發(fā)現(xiàn)的對(duì)未來(lái)的提示仍然同這個(gè)詞的舊有意思相近亚洲黄色一区二区在线观看，例如"一層薄的皮或覆蓋的薄膜"或"角膜上一種不正常的薄的覆蓋物"欧美男女性爱视频中文免费，就是film 用于攝影的含義，意思指覆蓋物九九国产A片，如膠欧美午夜性，可以代替感光板或用于感光板上或在相紙之上。

Backing: Antihalation Backing: A temporary, dark-colored, gelatin coating which is sometimes applied to the rear side of a photographic plate or film to reduce halation by absorbing any light that my pass through the emulsion.(2) Non-Curl Backing: A transparent, gelatin coating, sometimes applied to the opposite side of photographic film from the emulsion to prevent curling by balancing the forces that tend to curl the film as it is wet and dried during processing.

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Backing: Antihalation Backing: A temporary, dark-colored, gelatin coating which is sometimes applied to the rear side of a photographic plate or film to reduce halation by absorbing any light that my pass through the emulsion.(2) Non-Curl Backing: A transparent, gelatin coating, sometimes applied tothe opposite side of photographic film from the emulsion to prevent curling by balancing the forces that tend to curl the film as it is wet and dried during processing.

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photographic film base：軟片片基

photographic film 照相軟片 | photographic film base 軟片片基 | photographic filter 照相濾色片

photographic film：軟片,膠卷

photographic eyepiece 攝影用燈 | photographic film 軟片,膠卷 | photographic lamp 攝影用燈

photographic film：膠片

photographic f-ratio 照相F比 | photographic film 膠片 | photographic film dosimeter 照相膠片劑量計(jì)