单词 | photodensitometer |
释义 | photodensitometer/ˌfəʊtə(ʊ)dɛnsɪˈtɒmɪtə/Science noun An instrument for measuring the density of a photographic negative or the opacity of a fluid. Origin1920s; earliest use found in Journal of the Optical Society of America. From photo- + densitometer. |
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