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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.

Origin

1920s; earliest use found in Journal of the Optical Society of America. From photo- + densitometer.

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更新时间:2026/6/3 10:03:00