【英文标准名称】:Specificationoftheradiodatasystem(RDS)forVHF/FMsoundbroadcastinginthefrequencyrangefrom87,5to108,0MHz
【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】:IEC62106-2000
【标准状态】:作废
【国别】:国际
【发布日期】:2000-01
【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】:规范(验收);数据传送;规范;电气工程;作标记;物理层;数据布置;数据格式;定义;定义;甚高频;无线电数据系统;通信控制层;调制参数;无线电数据系统;数据通道;广播;表示层;声音广播;文电;链路层
【英文主题词】:Applications;Basebandcoding;Broadcasting;Communicationcontrollayers;Datachannels;Dataformats;Datalayout;Datatransfer;Definitions;Electricalengineering;Frequencymodulation;Linklayers;Marking;Messages;Modulationparameters;Physicallayers;Presentationlayers;Radiodatasystems;RDS;Sessionlayer;Soundbroadcasting;Specification;Specification(approval);VHF
【摘要】:TheRadioDataSystem,RDS,isintendedforapplicationtoVHF/FMsoundbroadcastsintherange87.5MHzto108.0MHzwhichmaycarryeitherstereophonic(pilot-tonesystem)ormonophonicprogrammes.ThemainobjectivesofRDSaretoenableimprovedfuntionalityforFMreceiversandtomakethemmoreuser-friendlybyusingfeaturessuchasProgrammeIdentification,ProgrammeServicenamedisplayandwhereapplicable,automatictuningforportableandcarradios,inparticular.Therelevantbasictuningandswitchinginformationthereforehastobeimplementedbythetype0group(see3.1.5.1),anditisnotoptionalunlikemanyoftheotherpossiblefeaturesinRDS.
【中国标准分类号】:M74
【国际标准分类号】:33_170
【页数】:132P.;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforApparentDensityofLeather
【原文标准名称】:皮革的表面密度的标准试验方法
【标准号】:ASTMD2346-2000(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:2000
【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】:D31.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:apparentdensity;area;leather;thickness;Density--apparent(bulk);Leather
【摘要】:Thistestmethodisdesignedtodeterminetheapparentdensityofspecimensfromtheirareaandthickness.Bymeasuringapparentdensity,thedegreeofloadingorofcompressionofleathercanbeevaluated.Thetestmethodisunsuitableforverysoftleatherssuchaschamoiswhosethicknesscannotbeaccuratelymeasuredbythetestmethodcited.1.1Thistestmethodcoversthedeterminationoftheapparentdensityofspecimensofleather.Thistestmethoddoesnotapplytowetblue.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Y45
【国际标准分类号】:59_140_30
【页数】:2P.;A4
【正文语种】:英语