ISO/IEC 10025-3-1993 信息技术系统间远程通信和信息交换连接方式运输协议的运输一致性测试第3部分:运输测试管理规范
时间:2024-05-11 13:16:43 来源: 标准资料网 作者：标准资料网 阅读：9370
【英文标准名称】:Informationtechnology;telecommunicationsandinformationexchangebetweensystems;transportconformancetestingforconnection-modetransportprotocoloperatingoverconnection-modenetworkservice;part3:transporttestmanagementprotocolspecificat
【原文标准名称】:信息技术系统间远程通信和信息交换连接方式运输协议的运输一致性测试第3部分:运输测试管理规范
【标准号】:ISO/IEC10025-3-1993
【标准状态】:作废
【国别】:国际
【发布日期】:1993-09
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/IEC/JTC1
【标准类型】:()
【标准水平】:()
【中文主题词】:传送层;连接模式;数据处理;传输协议;信息交流;协议;试验装置;开放系统互连;控制规程;传送协议;数据传送;通信系统;电子数据处理;通信规程;定义;开放系统;电信;电信;信息交换;合格试验;网络互连;信息技术
【英文主题词】:
【摘要】:
【中国标准分类号】:M11
【国际标准分类号】:35_100_40
【页数】:42P;A4
【正文语种】:英语
【英文标准名称】:Electricroomheatingappliances;freeoutputthermalstorageheaters,calculationforroomheating
【原文标准名称】:室内电取暖器.散热不可控制的贮热器.空间测量
【标准号】:DIN44570-4-1977
【标准状态】:作废
【国别】:德国
【发布日期】:1977-10
【实施或试行日期】:
【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】:加热器;数学计算;图示;加热设备;热输出;电气工程;尺寸;尺寸选定;房屋;蓄热
【英文主题词】:dimensions;dimensioning;electricalengineering;thermaloutput;mathematicalcalculations;diagrams;heatingequipment;rooms;storageheating;heaters
【摘要】:
【中国标准分类号】:Y63
【国际标准分类号】:91_140_20
【页数】:24P;A4
【正文语种】:德语
【英文标准名称】:Plastics-Determinationofflexuralproperties
【原文标准名称】:塑料.弯曲性能测定
【标准号】:BSENISO178-2003
【标准状态】:作废
【国别】:英国
【发布日期】:2003-03-06
【实施或试行日期】:2002-03-06
【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】:定义;弯曲试验;材料试验;试验设备;抗弯刚度;塑料;刚性;挠曲蠕变;测定;高聚物;挠性;抗弯强度;抗弯强度;试样;热塑性聚合物;热固性聚合物;试验
【英文主题词】:Bendtesting;Bendingstiffness;Bendingstrength;Definition;Definitions;Determination;Flexibility;Flexuralcreep;Flexuralstrength;Materialstesting;Plastics;Polymers;Precision;Rigid;Testequipment;Testspecimens;Testing;Thermoplasticpolymers;Thermosettingpolymers;Three-pointloading
【摘要】:1.1ThisInternationalStandardspecifiesamethodfordeterminingtheflexuralpropertiesofrigid(see3.12)andsemi-rigidplasticsunderdefinedconditions.Astandardtestspecimenisdefined,butparametersareincludedforalternativespecimensizesforusewhereappropriate.Arangeoftestspeedsisincluded.1.2Themethodisusedtoinvestigatetheflexuralbehaviour!1]ofthetestspecimensandfordeterminingtheflexuralstrength,flexuralmodulusandotheraspectsoftheflexuralstress/strainrelationshipundertheconditionsdefined.Itappliestoafreelysupportedbeam,loadedatmidspan(three-pointloadingtest).1.3Themethodissuitableforusewiththefollowingrangeofmaterials:—thermoplasticsmouldingandextrusionmaterials,includingfilledandreinforcedcompoundsinadditiontounfilledtypes;rigidthermoplasticssheets;—thermosettingmouldingmaterials,includingfilledandreinforcedcompounds;thermosettingsheets.InagreementwithISO10350-1andISO10350-2,thisInternationalStandardappliestofibre-reinforcedcompoundswithfibrelengths<7,5mmpriortoprocessing.Forlong-fibre-reinforcedmaterials(laminates)withfibrelengths>7,5mm,seereference[2]inthebibliography.Themethodisnotnormallysuitableforusewithrigidcellularmaterialsandsandwichstructurescontainingcellularmaterial!3'4].NOTEForcertaintypesoftextile-fibre-reinforcedplastics,afour-pointbendingtestispreferred.Itisdescribedinreference[2].1.4Themethodisperformedusingspecimenswhichmaybemouldedtothespecifieddimensions,machinedfromthecentralportionofastandardmultipurposetestspecimen(seeISO3167)ormachinedfromfinishedorsemi-finishedproductssuchasmouldings,orextrudedorcastsheet.1.5Themethodspecifiespreferreddimensionsforthetestspecimen.Testswhicharecarriedoutonspecimensofdifferentdimensions,oronspecimenswhicharepreparedunderdifferentconditions,mayproduceresultswhicharenotcomparable.Otherfactors,suchasthetestspeedandtheconditioningofthespecimens,canalsoinfluencetheresults.Especiallyforsemi-crystallinepolymers,thethicknessoftheorientedskinlayer,whichisdependentonmouldingconditionsandthickness,affectstheflexuralproperties.Consequently,whencomparabledataarerequired,thesefactorsmustbecarefullycontrolledandrecorded.1.6Flexuralpropertiescanonlybeusedforengineeringdesignpurposesformaterialswithlinearstress/strainbehaviour.Fornon-linearbehaviour,theflexuralpropertiesareonlynominal.Thebendingtestshouldpreferentiallybeusedwithbrittlematerials,forwhichtensiletestsaredifficult.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:28P.;A4
【正文语种】:英语