NF S10-008-5-1996 光学和光学仪器.光学元件和系统用图纸制备.第5部分:表面形状公差
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【英文标准名称】:Opticsandopticalinstruments.Preparationofdrawingsforopticalelementsandsystems.Part5:surfaceformtolerances.
【原文标准名称】:光学和光学仪器.光学元件和系统用图纸制备.第5部分:表面形状公差
【标准号】:NFS10-008-5-1996
【标准状态】:作废
【国别】:法国
【发布日期】:1996-12-01
【实施或试行日期】:1996-12-20
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:工程图;图解表示法;表面偏差度;图形表示;尺寸公差;视图;光学仪器;意见;光学;形状公差;编写;不合格的材料;表示法;定义;光学设备;尺寸选定
【英文主题词】:
【摘要】:
【中国标准分类号】:N30
【国际标准分类号】:01_100_20;37_020
【页数】:23P;A4
【正文语种】:其他
【英文标准名称】:Informationtechnology-Telecommunicationsandinformationexchangebetweensystems-Provisionoftheconnection-modeNetworkinternallayerservicebyintermediatesystemsusingISO/IEC8208,theX.25PacketLayerProtocol
【原文标准名称】:信息技术.系统间的电信和信息交换.使用ISO/IEC8208X.25包层协议通过中间系统提供连接方式网络内层服务
【标准号】:BSISO/IEC10177-1993
【标准状态】:现行
【国别】:英国
【发布日期】:1993-10-15
【实施或试行日期】:1993-10-15
【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】:开放系统互连;网络层;数据传输;数据传送;信息交流;数据包;通信规程;包交换网络;数据处理;合格
【英文主题词】:Dataprocessing;Datatransfer;Informationinterchange;Informationtechnology;Networkinterconnection;Networklayers;Packetswitchingnetworks;Telecommunications;X.25
【摘要】:ThisInternationalStandardspecifiesthemethodbywhichaNetwork-layerinterworkingunit(IWU)usestheX.25packetlayerprotocolspecifiedinISO/IEC8208tosupporttheOSIconnection-modeNetworkservice.ThespecificationisexpressedintermsofamappingbetweentheNetworkinternallayerservicedefinedinISO/IEC10028andtheVirtualCall(VC)andPermanentVirtualCircuit(PVC)servicesoftheX.25packetlayerprotocol.AnIWUtowhichthisInternationalStandardappliesinterconnects,foranyindividualNetworkconnection,tworealsubnetworks,atleastoneofwhichisaccessedusingtheX.25packetlayerprotocol.WhenbothsubnetworksareaccessedusingtheX.25packetlayerprotocol,thespecificationappliesindependentlytotheIWU'soperationoneachsubnetwork.Inaddition,thisInternationalStandardusesISO/IEC10028'sdefinitionoftherelayingfunctionsofanintermediatesystemtoextenditsapplicationbeyondasinglesubnetworkpointofattachment,tospecifytherequirementstobemetbyanIWUasawholeinsupportingtheOSIconnection-modeNetworkservice.ThisInternationalStandardcoversoperationoftheX.25packetlayerprotocolthatiscompatiblewiththe1984andlaterversionsofCCITTRecommendationX.25,andthatiscompatiblewiththe1980versionofX.25whenthePermanentVirtualCircuitserviceisused;compatibilitywiththe1980versionofX.25forVirtualCallsisoutsidethescopeofthisInternationalStandard.ToenableuseofthePVCservice,thisInternationalStandarddefinesasetofsubnetworkdependentconvergenceprotocol(SNDCP)procedures.TheseallowagivenPVCtotosupportoneNetworkconnectionatatime,buttosupportdifferentNetworkconnections,withthesameordifferentvaluesforaddressandqualityofserviceparameters,etc,atdifferenttimes.TheproceduresalsoallowforthepossibilityofusingaPVCinsupportofotherprotocols,butnotsimultaneouslywiththeseprocedures(apartfromtransientcollisioncases,whichdonotfailunnecessarily).Toevaluateconformanceofaparticularimplementation,itisnecessarytohaveastatementofwhichcapabilitiesandoptionshavebeenimplemented.SuchastatementiscalledaProtocolImplementationConformanceStatement(PICS),asdefinedinISO/IEC9646-1.ThisInternationalStandardprovidesthePICSproformaincompliancewiththerelevantrequirements,andinaccordancewiththerelevantguidance,giveninISO/IEC9646-2.ThisInternationalStandarddoesnotspecifyanyrequirementsrelatingtotheexchangeofroutinginformationorlayer-managementinformationbetweenanIWUandothersystems.
【中国标准分类号】:L78
【国际标准分类号】:33_040_40;35_110
【页数】:36P;A4
【正文语种】:英语
【英文标准名称】:Multicoreandsymmetricalpair/quadcablesfordigitalcommunications-Part8:Symmetricalpair/quadcableswithtransmissioncharacteristicsupto1200MHz-Workareawiring-Sectionalspecification
【原文标准名称】:数字通信用对绞/星绞多芯和对称电缆.第8部分:不高于1200MHz的有传输特性的对绞/星绞对称电缆.工作场所布线.分规范
【标准号】:IEC61156-8-2009
【标准状态】:现行
【国别】:国际
【发布日期】:2009-05
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/SC46C
【标准类型】:()
【标准水平】:()
【中文主题词】:适配器;电器用具软线;电缆;通信电缆;数据网络;数据传送;设计;数字的;数字信号;电气工程;电性能;绝缘件;集成服务数字网络;ISDN;LAN;材料;机械性能;多芯电缆;多股的;双股线;直上干管;分规范;铠装电缆;规范;规范(验收);对称的;通信;传输特性;布线
【英文主题词】:Adapters;Appliancecords;Cables;Communicationcables;Datanetwork;Datatransfer;Design;Digital;Digitalsignals;Electricalengineering;Electricalproperties;Insulations;Integratedservicesdigitalnetwork;ISDN;LAN;Materials;Mechanicalproperties;Multicorecables;Multi-wire;Pairsofwires;Risingmains;Sectionalspecification;Shieldedcables;Specification;Specification(approval);Symmetrical;Telecommunication;Transmissioncharacteristics;Wiring
【摘要】:
【中国标准分类号】:K13
【国际标准分类号】:33_120_20
【页数】:17P;A4
【正文语种】:英语
