英语词汇“r-value”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

　

单词	r-value
释义	R-value R-val·ue (är′văl′yo͞o)n. A measure of the capacity of a material, such as insulation, to impede heat flow, with increasing values indicating a greater capacity. Also called R-factor. [r(esistance) value.] R-val•ue (ˈɑrˌvæl yu) n. a 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. [1945–50; R, symbol for resistance] R-value R-value [′är ‚val·yü] (engineering) An index of the ability of a substance or material to retard the flow of heat; higher numerical values correspond to higher insulating ability. R-value A unit of thermal resistance. A material’s R-value is a measure of the effectiveness of the material in stopping the flow of heat through it. The higher a material’s Rvalue, the greater its insulating properties and the slower the heat flow through it. Examples of higher R-values for residential buildings: R-50 ceilings, R-21 walls, and R-30 floors. R-value A measure of the thermal resistance of a material or component. R-value R-value A measure of the heat conductivity of material.The higher the R-value,the better the insulating qualities.The Federal Trade Commission,in something called the R-Value Rule,requires certain disclosures regarding insulation. Among other things, new home sellers must put the following in every sales contract: the type, thickness, and R-value of the insulation that will be installed in each part of the house.Failure to make the required disclosures amounts to a deceptive trade practice and is punishable by fines.For full text of the rule, see 16 CFR 460 available at the Government Printing Office Web site at www.gpo.gov. AcronymsSeeRSI
随便看	invisible trade balances invisible trades invisible transaction invisible transactions invisible web invisible writing invisible writing ink invisibly invision in-vision continuity invision power board website integration invision power services, inc. in visual flight rules conditions invital invitation invitational invitationally invitationals invitational travel authorization invitation for bidders invitation for expression of interest invitation for international bidding invitation for prequalification invitation for proposal invitationly

　

英语词典包含2567994条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。

　

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间：2024/12/24 2:03:53