DIN 74347-1991 气压制动设备.管道空气过滤器
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【英文标准名称】:Airbrakingsystems;airfilterforpipes
【原文标准名称】:气压制动设备.管道空气过滤器
【标准号】:DIN74347-1991
【标准状态】:作废
【国别】:德国
【发布日期】:1991-01
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:工作压力;制动系统;管道;制动器;空气制动系统;过滤器插件;尺寸;道路车辆;空气过滤器;过滤机;压缩空气;管用空气过滤器;摩托车;压力;电缆
【英文主题词】:filters;dimensions;pressure;airfilterforpipes;brakingsystems;airbrakingsystems;brakes;airfilters;electriccables;motorvehicles;pipelines;roadvehicles;workingpressures;filterinserts;compress
【摘要】:
【中国标准分类号】:T24
【国际标准分类号】:4380;4960
【页数】:2P;A4
【正文语种】:德语
【英文标准名称】:StandardPracticeforClassificationofComputedRadiologySystems
【原文标准名称】:计算机辐射系统分类的标准实施规程
【标准号】:ASTME2446-2005(2010)
【标准状态】:现行
【国别】:美国
【发布日期】:2005
【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】:E07.01
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:basicspatialresolution.;classification;computedradiology;CR;filmsystemclassification;normalizedSNR;photo-stimulatedluminescence;PSL;Imagequality;Computedradiologysystems;Industrialradiographicfilmprocessing/testing;Phosphor
【摘要】:ThereareseveralfactorsaffectingthequalityofaCRimageincludingthespatialresolutionoftheIPsystem,geometricalunsharpness,scatterandcontrastsensitivity(signal-to-noiseratio),aswellassoftware.Thereareseveraladditionalfactors(forexample,scanningparameters),whichaffecttheaccuratereadingofimagesonexposedIPsusinganopticalscanner.ThispracticeistobeusedtoestablishaclassificationofCRsystemclassesonthebasisofanormalizedSNR.Duetothedifferencebetweenthemethods,itisrequiredtospecifytheCRsystemclasseswithspatialresolutionvalues.TheCRsystemclassesinthisdocumentdonotrefertoanyparticularmanufacturersx2019;imagingplates.ACRsystemclassresultsfromtheuseofaparticularimagingplatetogetherwiththeexposureconditions,particularlytotalexposure,thescannertypeandsoftwareandthescanningparameters.ThisclassificationsystemprovidesameanstocomparedifferingCRtechnologies,asiscommonpracticewithfilmsystems,whichguidestheusertotheappropriateconfiguration,IPandtechniquefortheapplicationathand.Theclassselectedmaynotmatchtheimagingperformanceofacorrespondingfilmclassduetothedifferenceinthespatialresolutionandscattersensitivity.Therefore,thepracticeshouldalwaysuseIQIsforproofofcontrastsensitivityandspatialresolution.Thequalityfactorscanbedeterminedmostaccuratelybythetestsdescribedinthispractice.Someofthesystemtestsrequirespecialtools,whichmaynotbeavailableinuserlaboratories.SimplertestsaredescribedforqualityassuranceinPracticeE2445,whicharedesignedforafasttestofthequalityofCRsystemsandlong-termstabilityandarerecommendedaspracticalusertests,shouldtheusernothavethespecialtoolsavailableasneededforthetestsinthispractice.ManufacturersofindustrialCRsystemswillusethispractice.UsersofindustrialCRsystemsmayalsoperformthetestsandmeasurementsoutlinedinthispractice,providedthattherequiredtestequipmentisusedandthemethodologyisstrictlyfollowed.AnyalternativemethodsmaybeappliedifequivalencetothemethodsofthispracticeisproventotheappropriateCognizantEngineeringOrganization.ThepublicationofCRsystemclasseswillenablespecifyingbodiesandcontractingpartiestoagreetoparticularsystemclass,asafirststepinarrivingattheappropriatesettingsofasystem,ortheselectionofasystem.ConfirmationofnecessaryimagequalityshallbeachievedbyusingPracticeE2033.1.1Thispracticedescribestheevaluationandclassificationofacomputedradiography(CR)system,aparticularphosphorimagingplate(IP),systemscannerandsoftware,incombinationwithspecifiedmetalscreensforindustrialradiography.Itisintendedtoensurethattheevaluationofimagequality,asfarasthisisinfluencedbythescanner/IPsystem,meetstheneedsofusers.1.2Thepracticedefinessystemteststobeusedtoclassifythesystemsofdifferentsuppliersandmakethemcomparableforusers.1.3TheCRsystemperformanceisdescribedbysignalandnoiseparameters.Forfilmsystems,thesignalisrepresentedbygradientandthenoisebygranularity.Thesignal-to-noiseratioisnormalizedbythebasicspatialresolutionofthesystemandispartofclassification.Thenormalizationisgivenbythescanningapertureof100x00B5;mdiameterforthemicro-photometer,whichisdefinedinTestMethodE1815forfilmsystem......
【中国标准分类号】:F80
【国际标准分类号】:19_100
【页数】:10P.;A4
【正文语种】:英语
【英文标准名称】:ElectromagneticcompatibilityandRadiospectrumMatters(ERM)-Landmobileservice-Radioequipmentintendedforthetransmissionofdata(and/orspeech)usingconstantornon-constantenvelopemodulationandhavinganantennaconnector-Part2:Harmon
【原文标准名称】:电磁兼容性和射频频谱管理(ERM).地面移动业务.用恒定或非恒定包络调制进行数据(和语音)传输并带有天线连接器的无线电设备.第2部分:按R&TTE指令3.2条基本要求协调的欧洲标准
【标准号】:EN300113-2-2007
【标准状态】:现行
【国别】:
【发布日期】:2007-11
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:天线接线端子;天线系统;数据传送;电气工程;电磁兼容性;EMC;地面流动服务设施;移动无线电统;无线电天线;无线电工程;无线电设备;无线电系统;额定值;语音传输;远程通信;测试;测试条件
【英文主题词】:Aerialterminal;Antennasystems;Datatransfer;Electricalengineering;Electromagneticcompatibility;EMC;Land-mobileservices;Mobileradiosystems;Radioantennas;Radioengineering;Radioequipment;Radiosystems;Ratings;Speechtransmission;Telecommunication;Telecommunications;Testing;Testingconditions
【摘要】:
【中国标准分类号】:M36;L06
【国际标准分类号】:33_060_20
【页数】:2P.;A4
【正文语种】:英语
