| 单词 | absorptance |
| 释义 | absorptance (extremely rare) n WORD FAMILY absorptance n a measure of the rate of decrease in the intensity of electromagnetic radiation (as light) as it passes through a given substance; the fraction of incident radiant energy absorbed per unit mass or thickness of an absorber absorptance equals 1 minus transmittance Syn|Hyper absorption coefficient, coefficient of absorption coefficient a constant number that serves as a measure of some property or characteristic |
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