BS 6721-5-1986 铜和铜合金的取样与分析.第5部分:采用火焰原子吸收分光光度法对铜与铜合金中锌的测定方法

上一篇: BS 3900-B5-1986 涂料试验方法.第B5集:液体涂料与干涂料膜化学检验.第5部分:液体涂料或覆层粉萃取物制备
下一篇: BS 6200-3.12.5-1986 铁、钢和其他铁金属的抽样和分析.分析方法.铜的测定.永磁合金:容量法

【英文标准名称】:Wood-Hardwoodsawntemperatetimber-Visualgrading
【原文标准名称】:木材.硬木锯材温带木材.视觉定级
【标准号】:NFB53-521-1991
【标准状态】:现行
【国别】:法国
【发布日期】:1999-12-01
【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】:
【摘要】:Wood-Hardwoodsawntemperatetimber-Visualgrading
【中国标准分类号】:B68
【国际标准分类号】:
【页数】:19P.;A4
【正文语种】:法语


【英文标准名称】:Internetprotocol(IP)andtransportstream(TS)basedserviceaccess(TS)(IEC62455:2007),TextinEnglish
【原文标准名称】:网际协议(IP)和基于服务访问的传输流(TS)
【标准号】:DINIEC62455-2008
【标准状态】:作废
【国别】:德国
【发布日期】:2008-02
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:可及性;广播;编码;密码;数据保护;译码;定义;数字广播;数字数据;数字工程;数字视频广播;DVB;电气工程;电子工程;电子仪器;英语;交互式的;网际协议;IP;动态图像专家组;多媒体;保护设备;保护措施;协议;服务设施;规范(验收);传输系统
【英文主题词】:Accessibility;Broadcasting;Coding;Cryptographic;Dataprotection;Decoding;Definition;Definitions;Digitalbroadcasting;Digitaldata;Digitalengineering;DigitalVideoBroadcast;DVB;Electricalengineering;Electronicengineering;Electronicinstruments;Englishlanguage;Interactive;InternetProtocol;IP;MPEG;Multimedia;Protectiondevices;Protectivemeasures;Protocols;Services;Specification(approval);Transmissionsystems
【摘要】:ThisInternationalStandardspecifiestheterminalforaservicepurchaseandprotectionsystemfordigitalbroadcasts,calledthe18Cryptsystem.Itisapplicableinallcountriesandregionswithsuitablycompliantbroadcastingandmultimediadistributionsystems.Guidelinesforcompatiblebroadcastservicesaregiveninthisstandard.Theservicepurchaseandprotectionfunctionsoperateinapurebroadcastenvironmentthatmaybecombinedwithabi-directionalinteractivitychannel.Thisstandardisapplicabletothefollowingbroadcastsystems.a)IPDCoverDVB-Hsystems~/IPdatacastoverDVB-Hisanend-to-endbroadcastsystemfordeliveryofanytypeofdigitalcontentandservicesusingIP-basedmechanismsoptimizedfordeviceswithlimitationsoncomputationalresourcesandbattery.AninherentpartoftheIPdatacastsystemisthatitcomprisesaunidirectionalDVBbroadcastpaththatmaybecombinedwithabi-directionalmobile/cellularinteractivitypath.IPdatacastisthusaplatformthatcanbeusedforenablingtheconvergenceofservicesfrombroadcast/mediaandtelecommunicationsdomains(forexample,mobile/cellular).ThisstandardspecifiesservicepurchaseandprotectionforIPdatacastoverDVB-Hsystems(seeB.10.3foranoverviewofreferences).b)DVBT/CISsystemsDVBT/CISsystemsareend-to-endbroadcastsystemsforaudio/videodatathatemployanMPEG2transportstreamanduseterrestrial,cableorsatellitebroadcastnetworks.Thisstandardspecifiesasystemfortheprotectionofthesebroadcastsinapurebroadcastenvironment.Inaddition,thisstandardspecifieshowpurchasing,keymanagementandregistrationmaybecarriedoutoveranoptionalinteractivitychannel.TheprotectiontechnologiesofferedbythisstandardaredesignedtooperatewithinanexistingDVBSimulCryptenvironment(seeB.10.2foranoverviewofreferences).c)MPEG2TS-basedIPsystemsMPEG2TS-basedIPsystemsemploybi-directionalIPnetworksforthe(broadcast)deliveryofMPEG2transportstreams.Thisstandardspecifiesasystemforthepurchaseandprotectionofservicesandcontentdeliveredviathesenetworks.Thisstandardisapplicableto,forexample,DVB-IPIsystems(seeB.10.4foranoverviewofreferences).d)Non-MPEG2TS-basedIPsystemsNon-MPEG2TS-basedIPsystemsemploybi-directionalIPnetworksforthe(broadcast)deliveryofaudio/videoorotherdatausingIPprotocolsinsteadofanMPEG2transportstream.Thisstandardspecifiesasystemforthepurchaseandprotectionofservicesandcontentdeliveredviathesenetworks(seeB.10.4foranoverviewofreferences).
【中国标准分类号】:M60
【国际标准分类号】:33_170
【页数】:407P.;A4
【正文语种】:英语