DIN EN 61834-8-2002 录音.家用(525-60、625-50、1125-60和1250-50系统)6.35mm磁带螺旋扫描数字视频盒式录音系统.第8部分:625-50系统用PAL制式

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【英文标准名称】:Recording-Helical-scandigitalvideocassetterecordingsystemusing6,35mmmagnetictapeforconsumeruse(525-60,625-50,1125-60and1250-50systems)-Part8:PALplusformatforthe625-50system(IEC61834-8:2001);GermanversionEN61834-8:2001
【原文标准名称】:录音.家用(525-60、625-50、1125-60和1250-50系统)6.35mm磁带螺旋扫描数字视频盒式录音系统.第8部分:625-50系统用PAL制式
【标准号】:DINEN61834-8-2002
【标准状态】:现行
【国别】:德国
【发布日期】:2002-03
【实施或试行日期】:2002-03-01
【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】:家用盒式录象机制式;螺旋扫描记录(法);数字录制技术;电视信号;记录系统;磁带;逐行倒相制;磁记录;尺寸;尺寸;数据块;数字记录法;家用;家用;盒式磁带;定义;定义;视频记录;特性;记录;录像带;盒式录象带;机械性能
【英文主题词】:
【摘要】:ThedocumentcontainsthespecificationsforanextendedimplementationoftheSDformatcapableofrecordingPALplusTVsignals.
【中国标准分类号】:M71
【国际标准分类号】:33_160_40
【页数】:15P;A4
【正文语种】:德语


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【英文标准名称】:Plastics-Determinationofburningbehaviourbyoxygenindex-Part2:Ambient-temperaturetest
【原文标准名称】:塑料通过氧指数测定其燃烧性第2部分:室温试验
【标准号】:ISO4589-2-1996
【标准状态】:现行
【国别】:国际
【发布日期】:1996-07
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC61
【标准类型】:()
【标准水平】:()
【中文主题词】:氧指数;易燃性;定义;试验;燃烧试验;塑料
【英文主题词】:Ambienttemperature;Burningbehaviours;Burningtests;Combustion;Concentration;Definitions;Determination;Determinationprocedures;Firetests;Flammability;High-temperaturetechniques;High-temperaturetesting;Materials;Oxygen;Oxygenconcentration;Oxygenindex;Physicaltesting;Plasticfilms;Plastics;Surfacespreadofflame;Temperature;Testequipment;Testperformance;Testing
【摘要】:ThispartofISO4589specifiesmethodsfordeter-miningtheminimumconcentrationofoxygen,inad-mixturewithnitrogen,thatwillsupportcombustionofsmallverticaltestspecimensunderspecifiedtestconditions.Theresultsaredefinedasoxygenindexvalues.Methodsareprovidedfortestingmaterialsthatareself-supportingintheformofverticalbarsorsheetupto10,5mmthick.Thesemethodsaresuitableforsolid,laminatedorcellularmaterialscharacterizedbyanapparentdensitygreaterthan100kg/m.Themethodsmayalsobeapplicabletosomecellularma-terialshavinganapparentdensityoflessthan100kg/m.Amethodisprovidedfortestingflexiblesheetorfilmmaterialswhilesupportedvertically.Forcomparativepurposes,aprocedureisprovidedfordeterminingwhetherornottheoxygenindexofamaterialliesabovesomespecifiedminimumvalue.OxygenindexresultsobtainedusingthemethodsdescribedinthispartofISO4589canprovideasen-sitivemeasureoftheburningcharacteristicsofma-terialsundercertaincontrolledlaboratoryconditions,andhencemaybeusefulforqualitycontrolpurposes.Theresultsobtainedaredependentupontheshape,orientationandisolationofthetestspecimenandtheconditionsofignition.Forparticularmaterialsorappli-cations,itmaybenecessaryorappropriatetospecifydifferenttestconditions.Resultsobtainedfromtestspecimensofdifferingthicknessorbyusingdifferentignitionproceduresmaynotbecomparableandnocorrelationwithflammabilitybehaviourunderotherfireconditionsisimplied.ResultsobtainedinaccordancewiththispartofISO4589-2mustnotbeusedtodescribeorappraisethefirehazardpresentedbyaparticularmaterialorshapeunderactualfireconditions,unlessusedasoneelementofafireriskassessmentthattakesintoac-countallofthefactorspertinenttotheassessmentofthefirehazardofaparticularapplicationforthematerial.NOTES1Itmaynotbepossibletoapplythesemethodssatisfac-torilytomaterialsthatexhibithighlevelsofshrinkagewhenheated,e.g.highlyorientedthinfilm.2Forassessingtheflamepropagationpropertiesofcellu-larmaterialsofdensity<100kg/m,attentionisdrawntothemethodofISO3582:1978,Cellularplasticandcellularrubbermaterials—Laboratoryassessmentofhorizontalburningcharacteristicsofsmallspecimenssubjectedtoasmallflame,fortestinghorizontalburningcharacteristics.
【中国标准分类号】:G31
【国际标准分类号】:13_220_40;83_080_01
【页数】:21P.;A4
【正文语种】:英语


【英文标准名称】:Methodsforthemeasurementofairpollution-Determinationofconcentrationofsuspendedmatter
【原文标准名称】:空气污染的测量方法.第2部分:悬浮物浓度的测定
【标准号】:BS1747-2-1969
【标准状态】:现行
【国别】:英国
【发布日期】:1969-12-16
【实施或试行日期】:1969-12-16
【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】:污染物;重量测量;试验设备;校正;工业空气污染物;污染;光学测量;尺寸;过滤机;集尘器;颗粒空气污染物;烟;气象测量;空气污染;设计;采样设备;空气过滤器;尘埃
【英文主题词】:Airfilters;Airpollution;Calibration;Contaminants;Design;Dimensions;Dust;Dustcollectors;Filters;Industrialairpollutants;Meteorologicalmeasurement;Opticalmeasurement;Particulateairpollutants;Pollution;Samplingequipment;Smoke;Testequipment;Weightmeasurement
【摘要】:Construction,useofapparatusfordeterminationoffinesuspendedparticles(smoke)bycomparisonwitharbitrarystandardandbyabsolute(weighing)method.
【中国标准分类号】:Z15
【国际标准分类号】:13_040_01
【页数】:16P.;A4
【正文语种】:英语