Thin: As applied to a photographic image, having low density. As applied to the physical properties of film, thin base film materials provide for more film per given roll diameter.是什么意思_Thin: As applied to a photographic image, having low density. As applied to the physical properties of film, thin base film materials provide for more film per given roll diameter.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句