1 文書を見つけるための辞書。

• coefficient of absorption, absorptance, absorption coefficient
• 吸収率, 吸収係数
• 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"
• 所定の物質を通過する電磁放射（光として）の強度比率の減少の測定