ectroma

/'ektrәumә/

流产

n (physics) a measure of the extent to which a substance transmits light or other electromagnetic radiation

plural of absorbance n (physics) a measure of the extent to which a substance transmits light or other electromagnetic radiation

n a measure of the rate of decrease in the intensity of electromagnetic radiation (as light) as it passes through a given substance

an instrument for measuring the intensity of electromagnetic radiation (usually by the photochemical effect)

measuring the intensity of electromagnetic radiation (especially of the sun's rays)

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