【英文标准名称】:InformationSystems-FiberDistributedDataInterface(FDDI)-TokenRingMediaAccessControl(MAC)ReplacesANSIX3.139-1987
【原文标准名称】:信息系统.光纤分布式数据接口(FDDI).令牌环介质访问控制(MAC)代替ANSIX3.139-1987
【标准号】:ANSIINCITS139-1987
【标准状态】:现行
【国别】:美国
【发布日期】:1987-01-01
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:SpecifiestheMediaAccessControl(MAC),thelowersublayeroftheDataLinkLayer(DLL),fortheFiberDistributedDataInterface(FDDI).
【中国标准分类号】:L78
【国际标准分类号】:35_200
【页数】:
【正文语种】:英语


【英文标准名称】:Railwayapplications-Wheelsetsandbogies-Non-poweredaxles-Designmethod
【原文标准名称】:铁路设施.轮副和行车机构.非动力轴.设计方法
【标准号】:BSEN13103-2001
【标准状态】:作废
【国别】:英国
【发布日期】:2001-07-15
【实施或试行日期】:2001-07-15
【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】:质量(物质);铁路车辆零部件;材料力学性能;铁路设施;疲劳;铁道车辆;应力;制动;铁路客车;铁路货运车辆;数学计算;设计;轴;行车机构
【英文主题词】:Bogies;Carryingwheels;Design;Guidelines;Impellershaft;Loading;Mathematicalcalculations;Railwheels;Railwayapplications;Railwaycoaches;Railwayvehiclecomponents;Railwayvehicles;Railwaywagons;Railways;Rollingstocks;Shafts;Shafts(rotating);Wheelsetshafts;Wheelsets
【摘要】:Thisstandard:-definestheforcesandmomentstobetakenintoaccountwithreferencetomassesandbrakingconditions;-givesthestresscalculationmethodforaxleswithoutsideaxle-journals;-specifiesthemaximumpermissiblestressestobeassumedincalculationsforsteelgradeEA1NdefinedinprEN13261:1998;-describeshowtoobtainthemaximumpermissiblestressesforothersteelgrades;-determinesthediametersforthevarioussectionsoftheaxle.Thepreferredshapesandtransitionsareidentifiedtoensureadequateserviceperformance.Thisstandardisapplicableto:-solidandhollowaxlesofrailwayrollingstockusedforthecarriageofpassengersandfreight;-axlesdefinedinprEN13261:1998;-allgauges.Thisstandardisapplicabletonon-poweredaxlesfittedtorollingstockintendedtorunundernormalEuropeanconditions.Beforetheuseofthisstandard,ifthereisanydoubtastowhethertherailwayoperatingconditionsarenormal,itisnecessarytodeterminewhetheranadditionaldesignfactorhastobeappliedtothemaximumpermissiblestresses.Thecalculationofwheelsetsforspecialapplications(e.g.tamping/lining/levellingmachines)maybemadeaccordingtothisstandardonlyfortheloadcasesoffreerunningandrunningintrainformation.Thisstandarddoesnotapplyforworkloadcases;theyarecalculatedseparately.Forlightrailandtramwayapplicationsotherstandardsordocuments,agreedbetweenthecustomerandsupplier,maybeapplied.Non-poweredaxlesofmotorbogiesandlocomotivesareanalysedaccordingtotherequirementsofEN13104.note:3)Ifthegaugeisnotstandard,someformulaeneedtobeadapted.
【中国标准分类号】:S33
【国际标准分类号】:45_060_01
【页数】:30P;A4
【正文语种】:英语