DIN EN 61747-1-2000 液晶和固态显示器件.第1部分:总规范
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【英文标准名称】:Liquidcrystalandsolid-statedisplaydevices-Part1:Genericspecification(IEC61747-1:1998);GermanversionEN61747-1:1999
【原文标准名称】:液晶和固态显示器件.第1部分:总规范
【标准号】:DINEN61747-1-2000
【标准状态】:作废
【国别】:德国
【发布日期】:2000-02
【实施或试行日期】:2000-02-01
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:质量评定;设计认证;总规范;液晶显示;液晶显示;液晶;组件;电子设备及元件;测量技术;指示;试验;质量保证;半导体器件;电子工程;电气工程;检验;作标记;定义;定义
【英文主题词】:
【摘要】:
【中国标准分类号】:L47
【国际标准分类号】:31_120
【页数】:23P;A4
【正文语种】:德语
【英文标准名称】:StandardPracticesforSimulatedServiceTestingforCorrosionofMetallicContainmentMaterialsforUseWithHeat-TransferFluidsinSolarHeatingandCoolingSystems
【原文标准名称】:太阳能加热和制冷系统中用传热液体的金属容器材料的腐蚀模拟维护试验的标准实施规程
【标准号】:ASTME745-1980(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:1980
【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】:E44.05
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:corrosion;fieldexposure;heattransferfluids;immersionmetalliccontainmentmaterials;solarheatingandcooling;Containmentsystems/applications;Corrosion--metals/alloys;Corrosion--solardevices;Fieldtesting--solarmaterials;Heattransfer
【摘要】:Atthistimenoneofthesepracticeshavebeendemonstratedtocorrelatewithfieldservice.Becausetheseproceduresdonotrestricttheselectionofeitherthecontainmentmaterialorthefluidfortesting,itisessentialthatconsiderationbegiventotheappropriatepairingofmetalandfluid.Likewise,knowledgeofthecorrosionprotectionmechanismandtheprobablemodeoffailureofaparticularmetalishelpfulintheselectionoftestconditionsandtheobservation,interpretation,andreportingoftestresults.Itisimportantthatconsiderationbegiventoeachofthepermittedvariablesintestproceduresothattheresultswillbemeaningfullyrelatedtofieldperformance.Itisespeciallyimportantthatthetimeoftestingselectedbeadequatetocorrectlymeasuretherateofcorrosionofthecontainmentmaterial.Note18212;Corrosion,whethergeneralorlocalized,isatime-dependentphenomenon.Thistimedependencecanshowsubstantialnonlinearity.Forexample,formationofaprotectiveoxidewilldiminishcorrosionwithtime,whilecertainformsoflocalizedattackacceleratecorrosionwithtime.Theminimumtimerequiredforatesttoprovideacorrosionratethatcanbeextrapolatedforthepredictionoflong-termperformancevarieswidely,dependingontheselectionofmetalandfluid,andontheformofcorrosionattack.Therefore,itisnotpossibletoestablishasingleminimumlengthoftestapplicabletoallmaterialsandconditions.However,itisrecommendedthatforthetestsdescribedinthesepractices,atestperiodofnolessthan6monthsbeused.Furthermore,itisrecommendedthattheeffectoftimeoftestingbeevaluatedtodetectanysignificanttimedependenceofcorrosionattack.Itisessentialforthemeaningfulapplicationoftheseproceduresthatthelengthoftestbeadequatetodetectchangesinthenatureofthefluidthatmightsignificantlyalterthecorrosivityofthefluid.Forexample,exhaustionofchemicalinhibitororchemicalbreakdownofthefluidmayoccurafterperiodsofmonthsinselectedcyclesofoperation.Note28212;Manyfluidsthatmaybeconsideredforsolarapplicationscontainadditivestominimizethecorrosivityofthefluid.Manysuchadditivesareusefulonlywithinaspecificconcentrationrange,andsomeadditivesmayactuallyacceleratecorrosioniftheconcentrationfallsbelowacriticallevel.Depletionkineticscanbeastrongfunctionoftheexposedmetalsurfacearea.Therefore,fortestsinvolvingfluidswithsuchadditives,considerationmustbegiventotheratioofmetalsurfaceareatofluidvolumeasitmayrelatetoanoperatingsystem.1.1Thesepracticescovertestproceduressimulatingfieldserviceforevaluatingtheperformanceundercorrosiveconditionsofmetalliccontainmentmaterialsinsolarheatingandcoolingsystems.Alltestresultsrelatetotheperformanceofthemetalliccontainmentmaterialonlyasapartofametal/fluidpair.Performanceinthesetestprocedures,takenbyitself,doesnotnecessarilyconstituteanadequatebasisforacceptanceorrejectionofaparticularmetal/fluidpairinsolarheatingandcoolingsystems,eitheringeneralorinaparticulardesign.1.2Thesepracticesdescribetestproceduresusedtoevaluatetheresistancetodeteriorationofmetalliccontainmentmaterialsintheseveralconditionsthatmayoccurinoperationofsolarheatingandcoolingsystems.Theseconditionsinclude:(1)operatingfullflow;(2)stagnantemptyvented;(3)stagnant,closedtoatmosphere,non-draindown;and(4)stagnant,closedtoatmosphere,draindown.【英文标准名称】:UncoatedHigh-StrengthSteelBarforPrestressingConcrete
【原文标准名称】:预应力混凝土用无涂覆的高强度钢棒
【标准号】:ASTMA722/A722M-1997
【标准状态】:作废
【国别】:美国
【发布日期】:1997
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:钢;棒材;高抗拉;预应力混凝土;结构钢
【英文主题词】:steels;bars(materials);hightensile;prestressedconcrete;structuralsteels
【摘要】:
【中国标准分类号】:H44
【国际标准分类号】:77_140_60
【页数】:
【正文语种】:英语
