您的位置: 标准下载 » 国际标准 » ANSI 美国国家标准 »

ANSI/INCITS/ISO/IEC 10646-1AMD 1a-2002 信息技术.通用多8位编码字符集.第1部分:体系结构和基本多文种平面.修改件1:数学符号和其它字符

作者:标准资料网 时间:2024-05-16 23:32:48  浏览:9552   来源:标准资料网
下载地址: 点击此处下载
【英文标准名称】:Informationtechnology-UniversalMultiple-OctetCodedCharacterSet(UCS)-Part1:ArchitectureandBasicMultilingualPlane-AMENDMENT1:Mathematicalsymbolsandothercharacters
【原文标准名称】:信息技术.通用多8位编码字符集.第1部分:体系结构和基本多文种平面.修改件1:数学符号和其它字符
【标准号】:ANSI/INCITS/ISO/IEC10646-1AMD1a-2002
【标准状态】:作废
【国别】:美国
【发布日期】:2002
【实施或试行日期】:
【发布单位】:美国国家标准学会(ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Charactersets;Codedcharactersets;Dataprocessing;Graphiccharactersets;Informationinterchange;Informationtechnology;Textprocessings;Textcommunication;Unicodes
【摘要】:
【中国标准分类号】:L71
【国际标准分类号】:35_040
【页数】:
【正文语种】:英语


下载地址: 点击此处下载
【英文标准名称】:StandardTestMethodforAbrasionResistanceofTextileFabrics(FlexingandAbrasionMethod)
【原文标准名称】:织物抗磨性的标准试验方法(褶曲和磨蚀法)
【标准号】:ASTMD3885-2007a
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:D13.60
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:磨蚀;抗磨性;测试;织物
【英文主题词】:abrasion;flexingandabrasion;textilefabric;Abrasionresistance--textilefabrics/fibers;Flexabrasiontest;Flex/abrasiontestermaintenance;Nonwoventextilefabrics;Stollabrasionmethod
【摘要】:Thistestmethodisnotrecommendedforacceptancetestingofcommercialshipmentsbecauseinformationonbetween-laboratoryprecisionisknowntobepoor.Iftherearedifferencesofpracticalsignificancebetweenreportedtestresultsfortwolaboratories(ormore),comparativetestsshouldbeperformedtodetermineifthereisastatisticalbiasbetweenthem,usingcompetentstatisticalassistance.Asaminimum,thetestsamplestobeusedareashomogenousaspossible,aredrawnfromthematerialfromwhichthedisparatetestresultswereobtained,andarerandomlyassignedinequalnumberstoeachlaboratoryfortesting.Otherfabricswithestablishedtestvaluesmaybeusedforthispurpose.Thetestresultsfromthetwolaboratoriesshouldbecomparedusingastatisticaltestforunpaireddata,ataprobabilitylevelchosenpriortothetestingseries.Ifabiasisfound,eitheritscausemustbefoundandcorrected,orfuturetestresultsmustbeadjustedinconsiderationoftheknownbias.Themeasurementoftheresistancetoabrasionoftextilefabricsisverycomplex.Theresistancetoabrasionisaffectedbymanyfactorsthatincludetheinherentmechanicalpropertiesofthefibers;thedimensionsofthefibers;thestructureoftheyarns;theconstructionofthefabrics;thetype,kind,andamountoftreatmentaddedtothefibers,yarns,orfabric;thenatureoftheabradant;thevariableactionoftheabradantoverthespecimenareaabraded;thetensiononthespecimen;thepressurebetweenthespecimenandtheabradant;andthedimensionalchangesinthespecimen.Themeasurementoftherelativeamountofabrasioncanbeaffectedbythemethodofevaluationandisofteninfluencedbythejudgmentoftheoperator.Itisrecognizedthatwiththistestmethodothermeansofevaluationbesidescyclestoruptureandbreakingstrengthhavebeenusedbytheindustry,suchascolorchange,appearancechange,andsoforth.Experiencehasshownthesetobehighlyvariableparametersandtheyarenotrecommendedwithoutexactcriteriaidentifiedinanapplicablematerialspecificationorcontract.Consequently,thecriteriaofbreakingstrengthandcyclestorupturearetherecommendedmeansofevaluationbecausetheyareconsideredtheleastvariableandinterlaboratoryagreementislikelytobeobtainedmoreeasily.Abrasiontestsaresubjecttovariationsduetochangesintheabradantbarduringspecifictests.Theabradantbarisconsideredapermanentabradantthatusesahardenedmetalsurface.Itisassumedthattheabradantwillnotchangeappreciablyinaspecificseriesoftests,butobviouslysimilarabradantsusedindifferentlaboratorieswillnotlikelychangeatthesamerateduetodifferencesinusage.Permanentabradantsmayalsochangeduetopickupoftreatmentsorothermaterialfromtestfabricsandmustaccordinglybecleanedatfrequentintervals.Consequently,dependinguponitsusage,theabradantbarmustbecheckedperiodicallyagainstastandard.Theresistanceoftextilematerialstoabrasionasmeasuredbythistestmethoddoesnotincludeallthefactorswhichaccountforwearperformanceordurabilityinactualuse.Whiletheabrasionresistancestatedintermsofthenumberofcyclesanddurability(definedastheabilitytowithstanddeteriorationorwearingoutinuse,includingtheeffectsofabrasion)arefrequentlyrelated,therelationshipvarieswithdifferentenduses.Differentfactorsmaybenecessaryinanycalculationofpredicteddurabilityfromspecificabrasiondata.Laboratorytestsmaybereliableasanindicationofrelativeenduseincaseswherethedifferenceinabrasionresistanceofvariousmaterialsislarge,buttheyshouldnotberelieduponwheredifferencesinlaboratorytestfindingsaresmall.Ingeneral,theresultsshouldnotberelieduponforpredictionofperformanceduringactualwearlifeforspeci......
【中国标准分类号】:W04
【国际标准分类号】:59_080_30
【页数】:8P.;A4
【正文语种】:


【英文标准名称】:Informationtechnology-OpenSystemsInterconnection-TheDirectory:Models;TechnicalCorrigendum3
【原文标准名称】:信息技术.开放体系的互连.地址录:模型.技术勘误表3
【标准号】:ISO/IEC9594-2TechnicalCorrigendum3-2011
【标准状态】:作废
【国别】:国际
【发布日期】:2011-11
【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/IECJTC1/SC6
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Applicationlayer;Communicationservice;Datanetwork;Directories;Informationinterchange;Informationtechnology;Models;Networkinterconnection;Opensystemsinterconnection;OSI;Telecommunication;Telecommunications
【摘要】:
【中国标准分类号】:L79
【国际标准分类号】:35_100_70
【页数】:3P;A4
【正文语种】:英语