absorptivity

柯林斯词典

absorptivity /ˌæbsɔːpˈtɪvɪtɪ, -zɔːp-/

• 1. N a measure of the ability of a material to absorb radiation, equal to the internal absorptance of a homogeneous layer of the material under conditions in which the path of the radiation has unit length and the boundaries of the layer have no influence 吸光率[physics]

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