SAE AS9217 Bolt, Machine-Steel Ams 6304, Diffused Nickel-Cadmium Plate, Double Hexagon Extended Washer Head, Drilled, .1
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Product Code:SAE AS9217
Title:Bolt, Machine-Steel Ams 6304, Diffused Nickel-Cadmium Plate, Double Hexagon Extended Washer Head, Drilled, .190-32 Unjf-3a
Issuing Committee:E-25 General Standards For Aerospace And Propulsion Systems
Scope:No scope available.
Title:Bolt, Machine-Steel Ams 6304, Diffused Nickel-Cadmium Plate, Double Hexagon Extended Washer Head, Drilled, .190-32 Unjf-3a
Issuing Committee:E-25 General Standards For Aerospace And Propulsion Systems
Scope:No scope available.
下载地址: 点击此处下载
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【英文标准名称】:StandardGuideforRapidPrototypingofInformationSystems
【原文标准名称】:信息系统快速原型法的标准指南
【标准号】:ASTME1340-2005(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】:E31.25
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:design;documentation;evaluation;informationsystem;ProjectManagementPlan;rapidprototyping;requirement;subprojects;systemarchitecture;systemdesign;systemdevelopment;Computerizedsystems;Databasedesign/development/structure;Documen
【摘要】:RapidPrototyping(RP)isaspecificLifeCycleModelusedtodevelopaninformationsystemwhichproducesaworkingmodelofthesystemveryquickly.TheRPprocessshowninFig.1hasmanysimilarities,andsomedifferencesfromtheconventionalsystem(WaterfallLifeCycleModel)developmentprocessshowninFig.2.RPreplacestheRequirementsandDesignprocessesoftheconventionalmethodwithaniterativeprocessofprototyperefinement.Wherethephasesoftheconventionalmethodproduceasetofdocumentsthatdescribethesystem,RPproducesaprototype.Theprototypeistestedandrefinedthroughseveraliterations,withintenseinteractionbetweensystemusersanddevelopers.RPisanexperimentalapproachtosystemdevelopmentwhichprovidesalearningdevice,theprototype,forusersanddevelopers.AprototypecanbeusedasatoolforclarifyingRequirementsfortheoperationalsystem,asameansofevaluatingadesignapproach,orasadevelopingseriesofversionsoftheoperationalsystem.Aprototypeissometimesusedasanexactbehavioralspecificationforanoperationalsystemwhichreplacesit.QualitycharacteristicsareoftensacrificedduringRPforthesakeofrapiddevelopmentandlowcost;robustness,efficiency,generality,portability,andmaintainabilityarecommonlyignoredbutnoneoftheseaspectsneedtobeneglected.However,documentationneededtousethesystemcannotbeignoredbutnoneoftheseaspectsneedtobeneglected.Ax201C;Throwawayx201D;prototypeisusedspecificallytodefineRequirementswhichareusedtoimplementafinalsystem.Anx201C;Evolutionaryx201D;prototypeisaprototypicalsystemusedforongoingrefinementofRequirementswhileoperationalversionsatspecificmilestonesareusedinproductionsettings.RapidinRPmeansthatthetimebetweensuccessiveversionsoftheprototypeisrelativelyshort.Itshouldbeshortenoughthat(1)bothusersanddeveloperscanrememberhoweachversionrelatestothepreviousonewithoutwrittennotes,(2)userrequirementsdonotchangesignificantlywhileaversionisbeingdeveloped,(3)theprototypingteamwillremainintheprojectthroughtheRPphase,and(4)totaltimetodevelopthesystemisacceptable.(Expectedprojectdurationshouldbestatedintheprojectmanagementplanningdocument.SeeSection6andANSI/IEEE1058andANSI/IEEE1074.)Afewdaysbetweenversionsisadequateandafewweeksmaybeacceptable.Ifthetimeneededtoproduceanewversionislonger,thenitmaybenecessarytoproducethatversionusingaconventionalsystemdevelopmentmethodwithfulldocumentationofrequirementsanddesign(seeAppendixX3).RPintegratesanalysis,designandconstruction,anddefinesRequirementsduringtheprocess.Itisespeciallyappropriatefordealingwithproblemswhicharenotwellunderstoodorarerapidlychanging.Theprototypefocusescommunicationbetweenusersanddevelopers.Forlargesystems,aRPapproachcanbeusedatahighleveltoexploretheoverallsystemarchitectureorfeasibility.Itcanalsobeusedtodevelopsubsystemsandcomponentswhoserequirementsarenotfullyunderstood(seeSection11).RPisespeciallywellsuitedfordevelopinguser-systeminterfaces.WhattoPrototype8212;Theill-structuredsystemdevelopmentproblemsthatyieldbesttoRPinclude:Decisionsupportsystemsinareaswherethestateofknowledgechangesrapidly,forexample,researchorclinicalpractice,Systemswhoseusersneedtoaccessand...........
【中国标准分类号】:L77
【国际标准分类号】:35_080
【页数】:12P.;A4
【正文语种】:英语
【英文标准名称】:Thermalspraying-Wires,rodsandcordsforflameandarcspraying-Classification-Technicalsupplyconditions(ISO/DIS14919:2012);GermanversionprENISO14919:2012
【原文标准名称】:热喷镀.熔喷和电弧喷镀线材、杆材和软线.分类.技术支持条件(ISO/DIS14919-2012).德文版本prENISO14919-2012
【标准号】:DINENISO14919-2012
【标准状态】:现行
【国别】:德国
【发布日期】:2012-10
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:验收规范;铝;铝合金;棒材(材料);制陶业;认证;化学成分;分类;分类系统;覆层工艺;涂层;铜;铜合金;交货条件;名称与符号;直径;尺寸规格;电弧喷涂;铁类合金;填充金属丝;精整;熔喷法;交货形式;识别;铁;标志;材料组别;机械性能;金属喷镀;金属的;金属;钼;镍;镍合金;非金属的;非金属;氧化物;性能;实心焊丝;规范(验收);喷雾索;喷覆层;喷射装置;喷镀用丝;带条;表面处理;试验报告;热喷涂混合物;热喷涂;锡;锡合金;公差(测量);焊接工程;钢丝
【英文主题词】:Acceptancespecification;Aluminium;Aluminiumalloys;Bars(materials);Ceramics;Certification;Chemicalcomposition;Classification;Classificationsystems;Coatingprocesses;Coatings;Copper;Copperalloys;Deliveryconditions;Designations;Diameter;Dimensions;Electricarcspraying;Ferrousalloys;Fillerwires;Finishes;Flamespraying;Formofdelivery;Identification;Iron;Marking;Materialgroups;Mechanicalproperties;Metalspraying;Metallic;Metals;Molybdenum;Nickel;Nickelalloys;Nonmetallic;Non-metals;Oxides;Properties;Solidwires;Specification(approval);Spraycords;Sprayedcoats;Sprayers;Sprayingwires;Straps;Surfacetreatment;Testreports;Thermalsprayadmixtures;Thermalspraying;Tin;Tinalloys;Tolerances(measurement);Weldingengineering;Wires
【摘要】:
【中国标准分类号】:
【国际标准分类号】:25_220_20
【页数】:20P;A4
【正文语种】:德语
【原文标准名称】:信息系统快速原型法的标准指南
【标准号】:ASTME1340-2005(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】:E31.25
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:design;documentation;evaluation;informationsystem;ProjectManagementPlan;rapidprototyping;requirement;subprojects;systemarchitecture;systemdesign;systemdevelopment;Computerizedsystems;Databasedesign/development/structure;Documen
【摘要】:RapidPrototyping(RP)isaspecificLifeCycleModelusedtodevelopaninformationsystemwhichproducesaworkingmodelofthesystemveryquickly.TheRPprocessshowninFig.1hasmanysimilarities,andsomedifferencesfromtheconventionalsystem(WaterfallLifeCycleModel)developmentprocessshowninFig.2.RPreplacestheRequirementsandDesignprocessesoftheconventionalmethodwithaniterativeprocessofprototyperefinement.Wherethephasesoftheconventionalmethodproduceasetofdocumentsthatdescribethesystem,RPproducesaprototype.Theprototypeistestedandrefinedthroughseveraliterations,withintenseinteractionbetweensystemusersanddevelopers.RPisanexperimentalapproachtosystemdevelopmentwhichprovidesalearningdevice,theprototype,forusersanddevelopers.AprototypecanbeusedasatoolforclarifyingRequirementsfortheoperationalsystem,asameansofevaluatingadesignapproach,orasadevelopingseriesofversionsoftheoperationalsystem.Aprototypeissometimesusedasanexactbehavioralspecificationforanoperationalsystemwhichreplacesit.QualitycharacteristicsareoftensacrificedduringRPforthesakeofrapiddevelopmentandlowcost;robustness,efficiency,generality,portability,andmaintainabilityarecommonlyignoredbutnoneoftheseaspectsneedtobeneglected.However,documentationneededtousethesystemcannotbeignoredbutnoneoftheseaspectsneedtobeneglected.Ax201C;Throwawayx201D;prototypeisusedspecificallytodefineRequirementswhichareusedtoimplementafinalsystem.Anx201C;Evolutionaryx201D;prototypeisaprototypicalsystemusedforongoingrefinementofRequirementswhileoperationalversionsatspecificmilestonesareusedinproductionsettings.RapidinRPmeansthatthetimebetweensuccessiveversionsoftheprototypeisrelativelyshort.Itshouldbeshortenoughthat(1)bothusersanddeveloperscanrememberhoweachversionrelatestothepreviousonewithoutwrittennotes,(2)userrequirementsdonotchangesignificantlywhileaversionisbeingdeveloped,(3)theprototypingteamwillremainintheprojectthroughtheRPphase,and(4)totaltimetodevelopthesystemisacceptable.(Expectedprojectdurationshouldbestatedintheprojectmanagementplanningdocument.SeeSection6andANSI/IEEE1058andANSI/IEEE1074.)Afewdaysbetweenversionsisadequateandafewweeksmaybeacceptable.Ifthetimeneededtoproduceanewversionislonger,thenitmaybenecessarytoproducethatversionusingaconventionalsystemdevelopmentmethodwithfulldocumentationofrequirementsanddesign(seeAppendixX3).RPintegratesanalysis,designandconstruction,anddefinesRequirementsduringtheprocess.Itisespeciallyappropriatefordealingwithproblemswhicharenotwellunderstoodorarerapidlychanging.Theprototypefocusescommunicationbetweenusersanddevelopers.Forlargesystems,aRPapproachcanbeusedatahighleveltoexploretheoverallsystemarchitectureorfeasibility.Itcanalsobeusedtodevelopsubsystemsandcomponentswhoserequirementsarenotfullyunderstood(seeSection11).RPisespeciallywellsuitedfordevelopinguser-systeminterfaces.WhattoPrototype8212;Theill-structuredsystemdevelopmentproblemsthatyieldbesttoRPinclude:Decisionsupportsystemsinareaswherethestateofknowledgechangesrapidly,forexample,researchorclinicalpractice,Systemswhoseusersneedtoaccessand...........
【中国标准分类号】:L77
【国际标准分类号】:35_080
【页数】:12P.;A4
【正文语种】:英语
【英文标准名称】:Thermalspraying-Wires,rodsandcordsforflameandarcspraying-Classification-Technicalsupplyconditions(ISO/DIS14919:2012);GermanversionprENISO14919:2012
【原文标准名称】:热喷镀.熔喷和电弧喷镀线材、杆材和软线.分类.技术支持条件(ISO/DIS14919-2012).德文版本prENISO14919-2012
【标准号】:DINENISO14919-2012
【标准状态】:现行
【国别】:德国
【发布日期】:2012-10
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:验收规范;铝;铝合金;棒材(材料);制陶业;认证;化学成分;分类;分类系统;覆层工艺;涂层;铜;铜合金;交货条件;名称与符号;直径;尺寸规格;电弧喷涂;铁类合金;填充金属丝;精整;熔喷法;交货形式;识别;铁;标志;材料组别;机械性能;金属喷镀;金属的;金属;钼;镍;镍合金;非金属的;非金属;氧化物;性能;实心焊丝;规范(验收);喷雾索;喷覆层;喷射装置;喷镀用丝;带条;表面处理;试验报告;热喷涂混合物;热喷涂;锡;锡合金;公差(测量);焊接工程;钢丝
【英文主题词】:Acceptancespecification;Aluminium;Aluminiumalloys;Bars(materials);Ceramics;Certification;Chemicalcomposition;Classification;Classificationsystems;Coatingprocesses;Coatings;Copper;Copperalloys;Deliveryconditions;Designations;Diameter;Dimensions;Electricarcspraying;Ferrousalloys;Fillerwires;Finishes;Flamespraying;Formofdelivery;Identification;Iron;Marking;Materialgroups;Mechanicalproperties;Metalspraying;Metallic;Metals;Molybdenum;Nickel;Nickelalloys;Nonmetallic;Non-metals;Oxides;Properties;Solidwires;Specification(approval);Spraycords;Sprayedcoats;Sprayers;Sprayingwires;Straps;Surfacetreatment;Testreports;Thermalsprayadmixtures;Thermalspraying;Tin;Tinalloys;Tolerances(measurement);Weldingengineering;Wires
【摘要】:
【中国标准分类号】:
【国际标准分类号】:25_220_20
【页数】:20P;A4
【正文语种】:德语
