GB/T 13453.1-1992 氯乙烯均聚物和共聚物树脂水中筛析方法

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基本信息
标准名称:氯乙烯均聚物和共聚物树脂水中筛析方法
英文名称:Test method of vinyl chloride homopolymer and copolymer resins-Sieve analysis in water
中标分类: 化工 >> 合成材料 >> 合成树脂、塑料
ICS分类: 橡胶和塑料工业 >> 塑料 >> 热塑性塑料
替代情况:被GB/T 21988-2008代替
发布部门: 中国石油和化学工业协会
发布日期:1992-04-29
实施日期:1993-04-01
首发日期:1992-04-29
作废日期:2008-12-01
主管部门:中国石油和化学工业协会
归口单位: 全国塑料标准化技术委员会
起草单位:锦西化工研究院
出版社:中国标准出版社
出版日期:1993-04-01
页数:6页
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所属分类: 化工 合成材料 合成树脂 塑料 橡胶和塑料工业 塑料 热塑性塑料
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【英文标准名称】:Informationtechnology.Telecommunicationsandinformationexchangebetweensystems.Localandmetropolitanareanetworks.Specificrequirements.Logicallinkcontrol
【原文标准名称】:信息技术.系统间通讯和信息交换.局域网和都市网.特殊要求.逻辑链接控制
【标准号】:BSISO/IEC8802-2-2000
【标准状态】:现行
【国别】:英国
【发布日期】:2000-03-15
【实施或试行日期】:2000-03-15
【发布单位】:英国标准学会(BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:信息交流;数据包;环形网络;数据传送;数据链路层;数据处理;物理层(开放系统互连);远程处理;起停式传输;地址(数据处理);数据传输;计算机网络;局域网;数据传输控制规程;接口;远程通信;包交换网络;电话网;通信网;城域网;总线网;开放系统互连
【英文主题词】:
【摘要】:ThisInternationalStandardisoneofasetofinternationalstandardsproducedtofacilitatetheinterconnec-tionofcomputersandterminalsonaLocalAreaNetwork(LAN).Itisrelatedtotheotherinternationalstan-dardsbytheReferenceModelforOpenSystemsInterconnection(OSI).NOTE—heexactrelationshipofthelayersdescribedinthisInternationalStandardtothelayersdefinedbytheOSIReferenceModelisunderstudy.ThisInternationalStandarddescribesthefunctions,features,protocol,andservicesoftheLogicalLinkCon-trol(LLC)sublayerintheISO/IEC8802LANProtocol.TheLLCsublayerconstitutesthetopsublayerinthedatalinklayer(seefigure1)andiscommontothevariousmediumaccessmethodsthataredefinedandsupportedbytheISO/IEC8802activity.SeparateInternationalStandardsdescribeeachmediumaccessmethodindividuallyandindicatetheadditionalfeaturesandfunctionsthatareprovidedbytheMediumAccessControl(MAC)sublayerineachcasetocompletethefunctionalityofthedatalinklayerasdefinedintheLANarchitecturalreferencemodel.ThisInternationalStandarddescribestheLLCsublayerservicespecificationstothenetworklayer(Layer3),totheMACsublayer,andtotheLLCsublayermanagementfunction.Theservicespecificationtothenet-worklayerprovidesadescriptionofthevariousservicesthattheLLCsublayer,plusunderlyinglayersandsublayers,offertothenetworklayer,asviewedfromthenetworklayer.TheservicespecificationtotheMACsublayerprovidesadescriptionoftheservicesthattheLLCsublayerrequiresoftheMACsublayer.Theseservicesaredefinedsoastobeindependentoftheformofthemediumaccessmethodology,andofthenatureofthemediumitself.TheservicespecificationtotheLLCsublayermanagementfunctionpro-videsadescriptionofthemanagementservicesthatareprovidedtotheLLCsublayer.Alloftheaboveser-vicespecificationsaregivenintheformofprimitivesthatrepresentinanabstractwaythelogicalexchangeofinformationandcontrolbetweentheLLCsublayerandtheidentifiedservicefunction(networklayer,MACsublayer,orLLCsublayermanagementfunction).Theydonotspecifyorconstraintheimplementa-tionofentitiesorinterfaces.ThisInternationalStandardprovidesadescriptionofthepeer-to-peerprotocolproceduresthataredefinedforthetransferofinformationandcontrolbetweenanypairofdatalinklayerserviceaccesspointsonaLAN.TheLLCproceduresareindependentofthetypeofmediumaccessmethodusedintheparticularLAN.Tosatisfyabroadrangeofpotentialapplications,threetypesofdatalinkcontroloperationareincluded(seeclause4).Thefirsttypeofoperation(seeclause6)providesadata-link-connectionless-modeserviceacrossadatalinkwithminimumprotocolcomplexity.Thistypeofoperationmaybeusefulwhenhigherlayerspro-videanyessentialrecoveryandsequencingservicessothatthesedonotneedreplicatinginthedatalinklayer.Inaddition,thistypeofoperationmayproveusefulinapplicationswhereitisnotessentialtoguaran-teethedeliveryofeverydatalinklayerdataunit.ThistypeofserviceisdescribedinthisInternationalStan-dardintermsof"logicaldatalinks."Thesecondtypeofoperation(seeclause7)providesadata-link-connection-modeserviceacrossadatalinkcomparabletoexistingdatalinkcontrolproceduresprovidedinInternationalStandardssuchasHDLC(seeISO/IEC13239:1997).Thisserviceincludessupportofsequenceddeliveryofdatalinklayerdataunits,andacomprehensivesetofdatalinklayererrorrecoverytechniques.ThissecondtypeofserviceisdescribedinthisInternationalStandardintermsof"datalinkcon-nections."Thethirdtypeofoperation(seeclause8)providesanacknowledged-connectionless-modedataunitexchangeservice,whichpermitsastationtobothsenddataandrequestthe
【中国标准分类号】:L78
【国际标准分类号】:35_110
【页数】:239P;A4
【正文语种】:英语


【英文标准名称】:Soilquality-Determinationofsoilmicrobialbiomass-Part2:fumigation-extractionmethod.
【原文标准名称】:测定土壤微生物的生物量,判定土壤质量.第2部分:烟熏提取法.
【标准号】:NFX31-226-2-2011
【标准状态】:现行
【国别】:法国
【发布日期】:2011-09-01
【实施或试行日期】:2011-09-03
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Biologicaltests;Biomass;Carbon;Chloroform;Compositionoftheground;Definitions;Determination;Extractionmethodsofanalysis;Fumigation;Gasabsorption;Mathematicalcalculations;Microbiologicalanalysis;Microbiology;Soilanalysis;Soils;Testing;Waterpractice;Waterretentionvalue
【摘要】:
【中国标准分类号】:Z50
【国际标准分类号】:13_080_30
【页数】:20P;A4
【正文语种】:其他