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单词 θ78676
释义
the world > matter > physics > electromagnetic radiation > [noun] > instrument for measuring (5)
radiometer1875

An instrument comprising four lightweight metal vanes, black on one side and white on the other, mounted on a spindle inside a partially evacuated…

spectroradiometer1923

a combination of a spectroscope and a radiometer, designed to measure the intensity of electromagnetic radiation over a range of wavelengths.

planchet1947

Physics. A small shallow dish used to contain a specimen while its radioactivity is measured.

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更新时间:2024/12/25 1:12:17