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ASTM C750-2009 核纯级碳化硼粉末的标准规范

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【英文标准名称】:StandardSpecificationforNuclear-GradeBoronCarbidePowder
【原文标准名称】:核纯级碳化硼粉末的标准规范
【标准号】:ASTMC750-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:C26.03
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:boroncarbide(nucleargrade);nuclear-gradeboroncarbidepowder,spec
【摘要】:1.1Thisspecificationdefinesthechemicalandphysicalrequirementsforboroncarbidepowderintendedforavarietyofnuclearapplications.Becauseeachapplicationhasadifferentneedforimpurityandboronrequirements,threedifferentchemicalcompositionsofpowderarespecified.Inusingthisspecification,itisnecessarytodictatewhichtypeofpowderisintendedtobeused.Ingeneral,theintendedapplicationsforthevariouspowdertypesareasfollows:1.1.1Type18212;Foruseasparticulatematerialinnuclearreactorcoreapplications.1.1.2Type28212;Powderthatwillbefurtherprocessedintoafabricatedshapeforuseinanuclearreactorcoreorusedinnon-coreapplicationswhenthepowderdirectlyorindirectlymaycauseadverseeffectsonstructuralcomponents,suchashalidestresscorrosionofstainlesssteel.1.1.3Type38212;Powderthatwillbeusedfornon-coreapplicationsorspecialin-coreapplications.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.
【中国标准分类号】:F46
【国际标准分类号】:71_060_50
【页数】:3P.;A4
【正文语种】:英语


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基本信息
标准名称:内螺纹小径用针式量头单头止端光滑塞规 M1?M3
中标分类: 机械 >> 工艺装备 >> 量具与量仪
发布日期:1987-06-27
实施日期:1988-01-01
首发日期:1900-01-01
作废日期:1900-01-01
出版日期:1900-01-01
页数:4页
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所属分类: 机械 工艺装备 量具与量仪
【英文标准名称】:Softwareengineering.COSMIC-FFP.Afunctionalsizemeasurementmethod
【原文标准名称】:软件工程.COSMIC-FFP.功能长度测量方法
【标准号】:BSISO/IEC19761-2003
【标准状态】:作废
【国别】:英国
【发布日期】:2003-03-11
【实施或试行日期】:2003-03-11
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:信息交换;定义;信息技术;测量;范函性;数据处理;计算机应用;泛函分析;计算机软件;计算机程序
【英文主题词】:Computerapplications;Computerprograms;Computersoftware;Dataprocessing;Definitions;Functionalanalysis;Functionality;Informationinterchange;Informationtechnology;Measurement
【摘要】:ThisInternationalStandardspecifiesthesetofdefinitions,conventionsandactivitiesoftheCOSMIC-FFPFunctionalSizeMeasurementMethod.Itisapplicabletosoftwarefromthefollowingfunctionaldomains:a)applicationsoftwarewhichisneededtosupportbusinessadministration;EXAMPLEBanking,insurance,accounting,personnel,purchasing,distributionormanufacturing.b)real-timesoftware,thetaskofwhichistokeepupwithorcontroleventshappeningintherealworld;EXAMPLESoftwarefortelephoneexchangesandmessageswitching,softwareembeddedindevicestocontrolmachinessuchasdomesticappliances,liftsandcarengines,forprocesscontrolandautomaticdataacquisition,andwithintheoperatingsystemofcomputers.c)hybridsoftheabove.EXAMPLEReal-timereservationsystemsforairlinesorhotels.ThisInternationalStandardhasnotbeendesignedformeasuringthefunctionalsizeofapieceofsoftware,oritsparts,which:d)ischaracterizedbycomplexmathematicalalgorithmsorotherspecializedandcomplexrules,suchasmaybefoundinexpertsystems,simulationsoftware,self-learningsoftwareandweatherforecastingsystems,ore)processescontinuousvariablessuchasaudiosoundsorvideoimages,suchasmaybefound,forinstance,incomputergamesoftware,musicalinstrumentsandthelike.However,withinthelocalenvironmentofanorganisationusingtheCOSMIC-FFPFunctionalSizeMeasurementMethod,itmaybepossibletomeasuretheseFURinawaywhichismeaningfulasalocalstandard.ThisInternationalStandardcontainsprovisionforthelocalcustomisationofthemethodforthispurpose.
【中国标准分类号】:L77
【国际标准分类号】:35_080
【页数】:26P.;A4
【正文语种】:英语