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单词 reflectance
释义

WordReference Random House Unabridged Dictionary of American English © 2024
re•flect•ance  (ri flektəns),USA pronunciation n. [Physics, Optics.]
  1. Optics, Physics, Opticsthe ratio of the intensity of reflected radiation to that of the radiation incident on a surface. Cf. albedo. 
  • reflect + -ance 1925–30

Collins Concise English Dictionary © HarperCollins Publishers::
reflectance /rɪˈflɛktəns/, reflection factor n
  1. a measure of the ability of a surface to reflect light or other electromagnetic radiation, equal to the ratio of the reflected flux to the incident flux
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