IEEE 1484.12.1 Corrigendum 1-2011 对象元数据学习.勘误表1
作者:标准资料网 时间:2024-05-17 14:16:56 浏览:8079
来源:标准资料网
【英文标准名称】:Learningobjectmetadata;Corrigendum1
【原文标准名称】:对象元数据学习.勘误表1
【标准号】:IEEE1484.12.1Corrigendum1-2011
【标准状态】:现行
【国别】:美国
【发布日期】:2011
【实施或试行日期】:
【发布单位】:美国电气电子工程师学会(US-IEEE)
【起草单位】:IEEE
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Bibliographicreferences;Bibliography;Dataelements;Dataexchange;DublinCore;Metadata;Multimedia;Teachingaids;Teachingmaterials
【摘要】:
【中国标准分类号】:L70
【国际标准分类号】:35_240_99
【页数】:26P;A4
【正文语种】:英语
【英文标准名称】:Electricalapparatusforpotentiallyexplosiveatmospheres-Pressurizedapparatus"p"
【原文标准名称】:防爆电器.加压设备"P"
【标准号】:BSEN50016-2002
【标准状态】:作废
【国别】:英国
【发布日期】:2002-08-07
【实施或试行日期】:2002-08-07
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:1ThisEuropeanStandardspecifiestherequirementsfortheconstructionandtestingofpressurizedandpurgedelectricalapparatusand"Ex"componentsformingpartofthepressurizedapparatus,withtypeofprotection'p',intendedforuseinpotentiallyexplosiveatmospheresofgasvapourandmist.2ThisEuropeanStandardsupplementsEN50014insofarasitappliestopressurizedandpurgedelectricalapparatuswithtypeofprotection'p'.3ThisEuropeanStandardisapplicabletoelectricalequipmentandcomponentsofGroupICategoryM2andofGroupIIGCategory2usingthetechniqueofpressurizeandpurge.NOTEInthisEuropeanStandard,theword"apparatus"hasthesamemeaningastheword"equipment"inDirective94/9/EC.4ThisEuropeanStandardincludestherequirementsfortheconstructionoftheenclosureanditsassociatedcomponents,including,ifany,theinletandoutletductsfortheprotectivegas,andforthesafetyprovisionsanddevicesnecessaryforthetypeofprotectionpressurization'p'.5ThisEuropeanStandardspecifiestherequirementsforpressurizedenclosureswithorwithoutaninternalsourceofrelease,withtheexceptionsgivenin1.7and1.8.6ThisEuropeanStandardspecifiesrequirementsforpressurizedenclosurescontaininganunlimitedsourceofreleaseofflammablegasorvapouronlywheretheunlimitedsourceofreleaseisfromthesurfaceofaliquid.7ThisEuropeanStandarddoesnotcontainrequirementsforpressurizedroomsoranalyserhouses(forwhichanotherstandardisinpreparation).8ThisEuropeanStandarddoesnotcontaintherequirementsforpressurizedenclosureswhere,inacontainmentsystemwithlimitedorunlimitedreleasethereis:a)airwithanoxygencontentgreaterthannormal,orb)oxygenincombinationwithinertgasinaproportiongreaterthan21%.9Duetothesafetyfactorsincorporatedinthetypeofprotectiontheuncertaintyofmeasurementinherentingoodquality,regularlycalibratedmeasurementequipmentisconsideredtohavenosignificantdetrimentaleffectandneednotbetakenintoaccountwhenmakingthemeasurementsnecessarytoverifycomplianceoftheapparatuswiththerequirementsofthisstandard.
【中国标准分类号】:K35
【国际标准分类号】:29_260_20
【页数】:34P;A4
【正文语种】:英语
【英文标准名称】:Railwayapplications-Aerodynamics-Part5:requirementsandtestproceduresforaerodynamicsintunnels.
【原文标准名称】:铁路应用设施.空气动力学.第5部分:隧道中空气动力学的试验规程和要求.
【标准号】:NFF17-020-5/IN1-2011
【标准状态】:现行
【国别】:法国
【发布日期】:2011-01-01
【实施或试行日期】:
【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】:Aerodynamiccharacteristics;Aerodynamics;Compressionloading;Definitions;Limits(mathematics);Loading;Railtransport;Railwayapplications;Railwayengineering;Railwayfixedequipment;Railwayvehicles;Railways;Route;Specification(approval);Stress;Testing;Tunneldistance;Tunnels;Velocityofflow;Windloading;Windspeed
【摘要】:
【中国标准分类号】:
【国际标准分类号】:45_060_01
【页数】:5P;A4
【正文语种】:其他
