【英文标准名称】:Informationtechnology-Codingofmultimediaandhypermediainformation-MHEGscriptinterchangerepresentation
【原文标准名称】:信息技术.多媒体和超媒体信息的编码.MHEG正本互换表示法
【标准号】:BSISO/IEC13522-3-1997
【标准状态】:现行
【国别】:英国
【发布日期】:1997-08-15
【实施或试行日期】:1997-08-15
【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】:程序设计技术;通信规程;信息交流;超媒体;数据传送;数据处理(软件);编码(数据转换);多媒体;图解表示法;数据处理;编码(程序设计);图形表示
【英文主题词】:Codedrepresentation;Coding(dataconversion);Communicationprocedures;Computergraphics;Dataprocessing;Datarepresentation;Exchangeformats;Graphiccharacters;Hypermedia;Imageprocessing;Informationexchange;Informationinterchange;Informationtechnology;Multimedia
【摘要】:1ContextofthescopeISO/IEC13522specifiesthecodedrepresentationofmultimedia/hypermediainformationobjects(MHEGobjects)forinterchangeasfinalformunitswithinoracrossservicesandapplications,byanymeansofinterchangeincludinglocalareanetworks,wideareatelecommunicationorbroadcastnetworks,storagemedia,etc.MHEGobjectsareusuallyproducedbycomputertoolstakingasasourceformmultimediaapplicationsdesignedusingmultimediascriptinglanguages.Inthiscontext,oneoftheMHEGobjectclasses,thescriptclass,isintendedtocomplementtheotherMHEGclassesinexpressingthefunctionalitycommonlysupportedbyscriptinglanguages.ScriptobjectsexpressmorepowerfulcontrolmechanismsanddescribemorecomplexrelationshipsamongMHEGobjectsthancanbeexpressedbyMHEGactionandlinkobjectsalone.Furthermore,scriptobjectsexpressaccessandinteractionwithexternalservicesprovidedbytherun-timeenvironment.OtherpartsofISO/IEC13522definethecodedrepresentationforscriptobjectsinanopenmannersothatscriptobjectsmayencapsulateeitherstandardisedorproprietaryscriptcode.ScriptobjectsencapsulatescriptsthatmaybeencodedinanyencodingformatasregisteredaccordingtoISO/IEC13522-4.2ScopeofthispartofISO/IEC13522ThescopeofthispartofISO/IEC13522istoextendthecodedrepresentationoftheMHEGscriptobjectclassdefinedbyanotherpartofISO/IEC13522,includingISO/IEC13522-1andISO/IEC13522-5.ThispartofISO/IEC13522specifiestheMHEGscriptinterchangerepresentation(MHEG-SIR)forthecontentsofscriptobjects,i.e.theencodingofthescriptdatacomponentoftheMHEGscriptclass.MHEGenginesaresystemorapplicationcomponentsthathandle,interpretandpresentMHEGobjects.ThispartofISO/IEC13522alsospecifiesthesemanticsofinterchangedscripts.ThesesemanticsaredefinedintermsofminimumrequirementsonthebehaviourofMHEGenginesthatsupporttheinterpretationofinterchangedscripts.ThispartofISO/IEC13522isapplicabletoallapplicationsthatinterchangemultimediaandhypermediainformation.
【中国标准分类号】:M70
【国际标准分类号】:35_040;35_240_99
【页数】:150P;A4
【正文语种】:英语
【英文标准名称】:Plastics-Determinationofcreepbehaviour-Part2:Flexuralcreepbythree-pointloading
【原文标准名称】:塑料.蠕变性能的测定.第2部分:用三点负载测定挠曲蠕变
【标准号】:ISO899-2-2003
【标准状态】:现行
【国别】:国际
【发布日期】:2003-06
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC61
【标准类型】:()
【标准水平】:()
【中文主题词】:蠕变试验;抗弯强度;应力;弯曲;定义;蠕变断裂试验;抗拉强度;蠕变;弯曲试验;材料;刚性;蠕变性能;三点负载;试样;试验报告;耐应力;塑料;抗弯应力;热固性聚合物;特性;表示法;测定;材料试验;热塑性聚合物;试验
【英文主题词】:Bendtesting;Bending;Bendingstrength;Bendingstress;Creep;Creepbehaviour;Creepproperties;Creeprupturetests;Creeptest;Creeptesting;Definitions;Determination;Materials;Materialstesting;Plastics;Properties;Representations;Rigid;Stress;Stressendurance;Tensilestrength;Testreports;Testspecimens;Testing;Thermoplasticpolymers;Thermosettingpolymers;Three-pointloading
【摘要】:1.1ThispartofISO899specifiesamethodfordeterminingtheflexuralcreepofplasticsintheformofstandardtestspecimensunderspecifiedconditionssuchasthoseofpretreatment,temperatureandhumidity.Itappliesonlytoasimplefreelysupportedbeamloadedatmid-span(three-point-loadingtest).1.2Themethodissuitableforusewithrigidandsemi-rigidnon-reinforced,filledandfibre-reinforcedplasticsmaterials(seeISO472fordefinitions)intheformofdumb-bell-shapedtestspecimensmouldeddirectlyormachinedfromsheetsormouldedarticles.NOTEThemethodmaybeunsuitableforcertainfibre-reinforcedmaterialsduetodifferencesinfibreorientation.1.3Themethodisintendedtoprovidedataforengineering-designandresearchanddevelopmentpurposes.Dataforengineering-designpurposesrequirestheuseofextensometerstomeasurethegaugelengthofthespecimen.Dataforresearchorquality-controlpurposesmayusethechangeindistancebetweenthegrips(nominalextension).1.4Flexuralcreepmayvarysignificantlywithdifferencesinspecimenpreparationanddimensionsandinthetestenvironment.Thethermalhistoryofthetestspecimencanalsohaveprofoundeffectsonitscreepbehaviour(seeAnnexA).Consequently,whenprecisecomparativeresultsarerequired,thesefactorsmustbecarefullycontrolled.1.5Ifflexural-creeppropertiesaretobeusedforengineering-designpurposes,theplasticsmaterialsshouldbetestedoverabroadrangeofstresses,timesandenvironmentalconditions.1.6Themethodmaynotbesuitablefordeterminingtheflexuralcreepofrigidcellularplastics(attentionisdrawninthisrespecttoISO1209-1,Cellularplastics,rigid—Flexuraltests—Part1:Bendingtest,andISO1209-2,Cellularplastics,rigid—Flexuraltests—Part2:Determinationofflexuralproperties).
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:14P;A4
【正文语种】:英语
基本信息
| 标准名称： | 石油工业在用压力容器检验 |
| 替代情况： | 替代SY/T 6552-2003 |
| 发布部门： | 国家能源局 |
| 发布日期： | 2011-07-28 |
| 实施日期： | 2011-11-01 |
| 首发日期： | |
| 作废日期： | |
| 出版社： | 石油工业出版社 |
| 出版日期： | 2011-11-01 |
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