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actinometry n. 光量測定 光量測定 actinometry n 1: measuring the intensity of electromagnetic radiation (especially of the sun's rays) Actinometry \Ac`ti*nom"e*try\, n.
1. The measurement of the force of solar radiation. --Maury. [1913 Webster] 2. The measurement of the chemical or actinic energy of light. --Abney. [1913 Webster]
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