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GB 223.33-1984 钢铁及合金化学分析方法 萃取分离-偶氮氯膦mA光度法测定铈量

作者:标准资料网 时间:2024-05-10 15:23:38  浏览:8959   来源:标准资料网
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基本信息
标准名称:钢铁及合金化学分析方法 萃取分离-偶氮氯膦mA光度法测定铈量
中标分类: 冶金 >> 金属化学分析方法 >> 钢铁与铁合金分析方法
替代情况:被GB/T 223.33-1994代替
发布日期:
实施日期:1985-03-01
首发日期:
作废日期:
出版日期:
页数:4页
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所属分类: 冶金 金属化学分析方法 钢铁与铁合金分析方法
下载地址: 点击此处下载
【英文标准名称】:Informationtechnology-Softwareproductquality-Qualitymodel
【原文标准名称】:信息技术.软件产品质量.质量模式
【标准号】:BSISO/IEC9126-1-2001
【标准状态】:作废
【国别】:英国
【发布日期】:2001-07-15
【实施或试行日期】:2001-08-15
【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】:计算机软件;数据处理;质量保证;质量;计算机程序
【英文主题词】:Characteristics;Computerprograms;Computersoftware;Computers;Dataprocessing;Definition;Definitions;Evaluations;Guidebooks;Guidelines;Informationprocessing;Informationtechnology;Performancecharacteristics;Properties;Quality;Reliability
【摘要】:ThispartofISO/IEC9126describesatwo-partmodelforsoftwareproductquality:a)internalqualityandexternalquality,andb)qualityinuse.Thefirstpartofthemodelspecifiessixcharacteristicsforinternalandexternalquality,whicharefurthersubdividedintosubcharacteristics.Thesesubcharacteristicsaremanifestedexternallywhenthesoftwareisusedasapartofacomputersystem,andarearesultofinternalsoftwareattributes.ThispartofISO/IEC9126doesnotelaboratethemodelforinternalandexternalqualitybelowthelevelofsubcharacteristics.Thesecondpartofthemodelspecifiesfourqualityinusecharacteristics,butdoesnotelaboratethemodelforqualityinusebelowthelevelofcharacteristics.Qualityinuseisthecombinedeffectfortheuserofthesixsoftwareproductqualitycharacteristics.Thecharacteristicsdefinedareapplicabletoeverykindofsoftware,includingcomputerprogramsanddatacontainedinfirmware.Thecharacteristicsandsubcharacteristicsprovideconsistentterminologyforsoftwareproductquality.Theyalsoprovideaframeworkforspecifyingqualityrequirementsforsoftware,andmakingtrade-offsbetweensoftwareproductcapabilities.NormativeAnnexAprovidesrecommendationsandrequirementsforsoftwareproductmetricsandqualityinusemetrics.ExamplesofthesemetricsarecontainedinotherpartsofISO/IEC9126.Thesemetricsareapplicablewhenspecifyingthequalityrequirementsandthedesigngoalsforsoftwareproducts,includingintermediateproducts.AnexplanationofhowthisqualitymodelcanbeappliedinsoftwareproductevaluationiscontainedinISO/IEC14598-1.ThispartofISO/IEC9126enablessoftwareproductqualitytobespecifiedandevaluatedfromdifferentperspectivesbythoseassociatedwithacquisition,requirements,development,use,evaluation,support,maintenance,qualityassuranceandauditofsoftware.Itcanforexamplebeusedbydevelopers,acquirers,qualityassurancestaffandindependentevaluators,particularlythoseresponsibleforspecifyingandevaluatingsoftwareproductquality.ExamplesofusesofthequalitymodeldefinedinthispartofISO/IEC9126areto:·validatethecompletenessofarequirementsdefinition;·identifysoftwarerequirements;·identifysoftwaredesignobjectives;·identifysoftwaretestingobjectives;·identifyqualityassurancecriteria;·identifyacceptancecriteriaforacompletedsoftwareproduct.NOTE1ThispartofISO/IEC9126canbeusedinconjunctionwithISO/IEC15504(whichisconcernedwiththesoftwareprocessassessment)toprovide:·aframeworkforsoftwareproductqualitydefinitioninthecustomer-supplierprocess;·supportforreview,verificationandvalidation,andaframeworkforquantitativequalityevaluation,inthesupportprocess;·supportforsettingorganisationalqualitygoalsinthemanagementprocess.NOTE2ThispartofISO/IEC9126canbeusedinconjunctionwithISO/IEC12207(whichisconcernedwiththesoftwarelifecycle)toprovide:·aframeworkforsoftwareproductqualityrequirementsdefinitionintheprimarylifecycleprocess;·supportforreview,verificationandvalidationinsupportinglifecycleprocesses.NOTE3ThispartofISO/IEC9126canbeusedinconjunctionwithISO9001(whichisconcernedwithqualityassuranceprocesses)toprovide:·supportforsettingqualitygoals;·supportfordesignreview,verificationandvalidation.
【中国标准分类号】:L77
【国际标准分类号】:35_080
【页数】:34P.;A4
【正文语种】:英语


【英文标准名称】:Wastewatertreatmentplants-Measurementoftheoxygentransferincleanwaterinaerationtanksofactivatedsludgeplants
【原文标准名称】:污水处理厂.活性污泥处理厂曝气池清水中充氧量的测量
【标准号】:BSEN12255-15-2003
【标准状态】:现行
【国别】:英国
【发布日期】:2003-12-17
【实施或试行日期】:2003-12-17
【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】:
【英文主题词】:
【摘要】:ThisEuropeanStandardspecifiesthenon-steadystatemeasurementoftheoxygentransferrateandtheoxygentransferefficiencyofaerationsystemsinactivatedsludgeaerationtanks(seeEN12255-6)whenfilledwithcleanwater.NOTE1Thisisknownasthecleanwatertest.NOTE2Sincethemethodisbasedoncompletelymixedtanksortankswithevenlydistributedaeratorsordiffuserstestresultsfromcertainaerationinstallationscanbeincorrect.NOTE3Underprocessconditionswithmixedliquortheoxygentransferrateandtheoxygentransferefficiencycanbedifferentfromthecleanwatertestresults.Thisisexpressedbytheα-factor.
【中国标准分类号】:J88;P41
【国际标准分类号】:13_060_30
【页数】:20P;A4
【正文语种】:英语



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