- daylight ratio
- фото коэффициент дневного освещения, коэффициент естественной освещенности
Большой англо-русский и русско-английский словарь. 2001.
daylight ratio
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Daylight — For other uses, see Daylight (disambiguation). World map showing the areas of the Earth receiving daylight around 13:00 UTC, April 2nd. Daylight or the light of day is the combination of all direct and indirect sunlight outdoors during the… … Wikipedia
Daylight factor — A daylight factor is the ratio of internal light level to external light level and is defined as follows: DF = (Ei / Eo) x 100% where, Ei = illumiance due to daylight at a point on the indoors working plane, Eo = simultaneous outdoor illuminance… … Wikipedia
daylight factor — noun : the ratio of the illumination from windows at any point indoors to that out in the open, the test surface being horizontal in each case called also window efficiency ratio … Useful english dictionary
window-efficiency ratio — noun : daylight factor … Useful english dictionary
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