NF L35-171-1974 带自润滑装置的球形接头.有键槽长螺纹杆.尺寸和载荷
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来源:标准资料网
【英文标准名称】:Rod-endswithself-lubricatingsphericalbearing.Longthreadedshankandkeyway.Dimensionsandloads.
【原文标准名称】:带自润滑装置的球形接头.有键槽长螺纹杆.尺寸和载荷
【标准号】:NFL35-171-1974
【标准状态】:现行
【国别】:法国
【发布日期】:1974-05
【实施或试行日期】:1974-04-29
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:钢材;材料规范;不锈钢;尺寸公差;飞行器部件;质量(物质);端部;球连接;规范;防护覆层;尺寸;名称与符号;静荷载;动态荷载;动力荷载;航空运输;旋转端件;转环;钢;静荷截;飞行器设备
【英文主题词】:
【摘要】:
【中国标准分类号】:V22
【国际标准分类号】:49_035
【页数】:3P;A4
【正文语种】:其他
【英文标准名称】:Contactlenses-Determinationofbackvertexpower-Measurementofcontactlensesimmersedinsaline
【原文标准名称】:接触镜片.后顶点屈光度的测定.盐水中浸泡的接触镜片的测量
【标准号】:BSENISO9337-2-2004
【标准状态】:作废
【国别】:英国
【发布日期】:2004-08-04
【实施或试行日期】:2004-08-04
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:接触镜片;光学仪器;光学;测定;透镜;光学设备;光学测量;校正;测量仪器;对视力的帮助;眼科光学;顶点屈光度;前焦距测量仪;盐溶液;试验;眼科学;定义
【英文主题词】:
【摘要】:
【中国标准分类号】:C32
【国际标准分类号】:11_040_70
【页数】:18P;A4
【正文语种】:英语
【英文标准名称】:StandardPracticeforMeasuringLife-CycleCostsofBuildingsandBuildingSystems
【原文标准名称】:建筑物和建筑物系统周期成本测算的标准实施规程
【标准号】:ASTME917-2005(2010)
【标准状态】:现行
【国别】:美国
【发布日期】:2005
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E06.81
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:buildingeconomics;buildingsystems;costanalysis;engineering-economics;life-cyclecosts;present-valueanalysis;Presentvalue(PV)analysis;Buildingeconomics;Costanalysis(ofbuildingconstructions);Engineeringeconomics;Life-cyclecost(LCC)
【摘要】:LCCanalysisisaneconomicmethodforevaluatingaprojectorprojectalternativesoveradesignatedstudyperiod.ThemethodentailscomputingtheLCCforalternativebuildingdesignsorsystemspecificationshavingthesamepurposeandthencomparingthemtodeterminewhichhasthelowestLCCoverthestudyperiod.TheLCCmethodisparticularlysuitablefordeterminingwhetherthehigherinitialcostofabuildingorbuildingsystemiseconomicallyjustifiedbyreductionsinfuturecosts(forexample,operating,maintenance,repair,orreplacementcosts)whencomparedwithanalternativethathasalowerinitialcostbuthigherfuturecosts.Ifabuildingdesignorsystemspecificationhasbothalowerinitialcostandlowerfuturecostsrelativetoanalternative,anLCCanalysisisnotneededtoshowthattheformeristheeconomicallypreferablechoice.Ifaninvestmentprojectisnotessentialtothebuildingoperation(forexample,replacementofexistingsingle-panewindowswithnewdouble-panewindows),theprojectmustbecomparedagainstthex201C;donothingx201D;alternative(thatis,keepingthesinglepanewindows)inordertodetermineifitiscosteffective.Typicallythex201C;donothingx201D;alternativeentailsnoinitialinvestmentcostbuthashigherfuturecoststhantheproposedproject.1.1Thispracticeestablishesaprocedureforevaluatingthelife-cyclecost(LCC)ofabuildingorbuildingsystemandcomparingtheLCCsofalternativebuildingdesignsorsystemsthatsatisfythesamefunctionalrequirements.1.2TheLCCmethodmeasures,inpresent-valueorannual-valueterms,thesumofallrelevantcostsassociatedwithowningandoperatingabuildingorbuildingsystemoveraspecifiedtimeperiod.1.3ThebasicpremiseoftheLCCmethodisthattoaninvestorordecisionmakerallcostsarisingfromaninvestmentdecisionarepotentiallyimportanttothatdecision,includingfutureaswellaspresentcosts.Appliedtobuildingsorbuildingsystems,theLCCencompassesallrelevantcostsoveradesignatedstudyperiod,includingthecostsofdesigning,purchasing/leasing,constructing/installing,operating,maintaining,repairing,replacing,anddisposingofaparticularbuildingdesignorsystem.
【中国标准分类号】:P02
【国际标准分类号】:91_010_20
【页数】:19P.;A4
【正文语种】:英语
