| 单词 | r-value |
| 释义 | R-value[ ahr-val-yoo ] / ˈɑrˌvæl yu / nouna measure of the resistance of an insulating or building material to heat flow, expressed as R-11, R-20, and so on; the higher the number, the greater the resistance to heat flow. Compare U-value. Origin of R-value1945–50; R, symbol for resistance Words nearby R-valueRuysch's muscle, Ruysdael, Ruyter, Ružička, RV, R-value, RVH, R.V.S.V.P., R/W, RWA, Rwanda Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 |
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