IEC 60268-2-1987 声系统设备第2部分:一般术语解释和计算方法
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【英文标准名称】:Soundsystemequipment.Part2:Explanationofgeneraltermsandcalculationmethods
【原文标准名称】:声系统设备第2部分:一般术语解释和计算方法
【标准号】:IEC60268-2-1987
【标准状态】:现行
【国别】:国际
【发布日期】:1987
【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/TC100
【标准类型】:()
【标准水平】:()
【中文主题词】:术语;电气工程;额定值;公共寻址系统;定义;数学计算;传输装置;无线电设备;声学;计算方法;声传输;无线电接收机;电声学;电声器件
【英文主题词】:Acoustics;Acoustoelectricdevices;Audiosystems;Definitions;Electricalengineering;Electroacoustics;Mathematicalcalculations;Methodsofcalculation;Public-addresssystems;Radioequipment;Radioreceivers;Ratings;Soundtransmission;Terminology;Transmissiondevices
【摘要】:Dealswiththeexplanationofgeneraltermsandcalculationmethodsusedinconnectionwithsoundsystemequipment.Includesverbalexplanationaswellasmathematicaldefinition.Figuresaregiventoillustratedistortionspectraandmeasuringmethods.
【中国标准分类号】:M72
【国际标准分类号】:01_040_33;33_160_30
【页数】:31P.;A4
【正文语种】:英语
【英文标准名称】:Textiles-Tearpropertiesoffabrics-Part3:Determinationoftearforceofwing-shapedtestspecimens(Singletearmethod)
【原文标准名称】:纺织品织物撕破特性第3部分:翼形试样撕破强力的测定(单舌法)
【标准号】:ISO13937-3-2000
【标准状态】:现行
【国别】:国际
【发布日期】:2000-04
【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/TC38
【标准类型】:()
【标准水平】:()
【中文主题词】:撕裂扩展;布;试验;测定;扯裂试验;抗拉试验;撕裂扩展性能;撕裂扩展力;特性;纺织材料;机翼
【英文主题词】:Cloth;Cracking;Crescent;Cuttingandbreaking(textiles);Definitions;Determination;Flaws;Inertialparts;Instruments;Materialstesting;Measuringsamples;Measuringtechniques;Netting;Pendulums;Properties;Samples;Samplingmethods;Tearpropagation;Tearpropagationforce;Tearpropagationtests;Teartests;Tear-offpropagationbehaviour;Tensiletests;Terminology;Testing;Textile;Textiles;Wings
【摘要】:ThisPartofENISO13937describesasingletearmethodtodeterminefabrictearforce,knownasthewingtestusingatestspecimencuttoformtwowingsforclampinginclinedatadefinedangletothethreaddirection.Thetearforcemeasuredistheforcerequiredtopropagateapreviouslystartedtear.Thetestismainlyapplicabletowoventextilefabrics.Itmaybeapplicabletofabricsproducedbyothertechniques.Duetotheclampingofthespecimenwingsinclinedtothethreadstobetornthetestcanbeusedformosttypesoffabricswithoutcausingatransferoftearanditislesssusceptibletowithdrawalofthreadsthanotherteartests.Ingeneralthemethodisnotapplicabletoknittedfabrics,wovenelasticfabricsandnonwovens,towhichthetrapezoidaltestmethodispreferablyapplied(Note2).Themethodonlyallowstheuseofconstant-rate-of-extension(CRE)testingmachines.NOTE1:Forotherteartestmethodsusingtensile-testingmachinespart2ofENISO13937describesamethodknownasthetrousertestandpart4thetonguetestmethod.Part1ofENISO13937describestheballisticpendulum(Elmendorf)method.NOTE2:Fortrapezoidaltestmethods,seeISO9073-4fornonwovensorISO4674forcoatedfabrics.
【中国标准分类号】:W04
【国际标准分类号】:59_080_30
【页数】:11P.;A4
【正文语种】:英语
【英文标准名称】:Specificationoftheradiodatasystem(RDS)forVHF/FMsoundbroadcastinginthefrequencyrangefrom87,5MHzto108,0MHz
【原文标准名称】:频率范围为87.5～108.0MHz的VHF/FM声音广播用无线电数据系统(RDS)的规范
【标准号】:BSEN62106-2009
【标准状态】:现行
【国别】:英国
【发布日期】:2010-04-30
【实施或试行日期】:2010-04-30
【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】:使用;基带编码;广播;代码字符集;通信控制层;数据通道;数据格式;数据布置;数据传送;定义;电气工程;调频;频率范围;链路层;作标记;文电;调制;调制参数;物理层;表示层;无线电数据系统;无线电数据系统(RDS);会话层;声音广播;规范;规范(验收);甚高频(VHF)
【英文主题词】:Applications;Basebandcoding;Broadcasting;Codedcharactersets;Communicationcontrollayers;Datachannels;Dataformats;Datalayout;Datatransfer;Definitions;Electricalengineering;Frequencymodulation;Frequencyranges;Linklayers;Marking;Messages;Modulation;Modulationparameters;Physicallayers;Presentationlayers;Radiodatasystems;RDS;Sessionlayer;Soundbroadcasting;Specification;Specification(approval);VHF
【摘要】:ThisInternationalStandarddescribestheRadioDataSystem,RDS,intendedforapplicationtoVHF/FMsoundbroadcastsintherange87,5MHzto108,0MHzwhichmaycarryeitherstereophonic(pilot-tonesystem)ormonophonicprogrammes(seeclause2–NormativereferencesITU-RRecommendationsBS450-3andBS643-2).ThemainobjectivesofRDSaretoenableimprovedfunctionalityforFMreceiversandtomakethemmoreuser-friendlybyusingfeaturessuchasProgrammeIdentification,ProgrammeServicenamedisplayandwhereapplicable,automatictuningforportableandcarradios,inparticular.Therelevantbasictuningandswitchinginformationthereforehastobeimplementedbythetype0group(see6.1.5.1),anditisnotoptionalunlikemanyoftheotherpossiblefeaturesinRDS.
【中国标准分类号】:M61
【国际标准分类号】:33_060_20;33_170;35_240_99
【页数】:160P.;A4
【正文语种】:英语
