BS EN 4700-006-2010 航空航天系列.耐热合金钢.锻轧材.技术规格.第006部分:预制产品和锻造件

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【英文标准名称】:Aerospaceseries.Steelandheatresistingalloys.Wroughtproducts.Technicalspecification.Part006:Pre-productionandproductionforgings
【原文标准名称】:航空航天系列.耐热合金钢.锻轧材.技术规格.第006部分:预制产品和锻造件
【标准号】:BSEN4700-006-2010
【标准状态】:现行
【国别】:英国
【发布日期】:2010-09-30
【实施或试行日期】:2010-09-30
【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】:验收规范;航空航天运输;航空运输;合金;定义(术语);交货条件;尺寸规格;锻件;硬度测量;热处理;高温;冲击强度试验;材料;熔化;预行生产;特性;半成品;航天运输;规范(验收);钢产品;钢;试验;锻制品
【英文主题词】:Acceptancespecification;Aerospacetransport;Airtransport;Alloys;Definitions;Deliveryconditions;Dimensions;Forgings;Hardnessmeasurement;Heattreatment;Hightemperature;Impactstrengthtest;Materials;Melting;Pre-production;Properties;Semi-finishedproducts;Spacetransport;Specification(approval);Steelproducts;Steels;Testing;Wroughtproducts
【摘要】:ThisEuropeanStandarddefinestherequirementsfortheordering,manufacture,testing,inspectionanddeliveryofpre-productionandproductionforgingsinsteelandheatresistingalloys.
【中国标准分类号】:V11
【国际标准分类号】:49_025_10
【页数】:32P.;A4
【正文语种】:英语


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【英文标准名称】:Cablenetworksfortelevisionsignals,soundsignalsandinteractiveservices-Systemperformanceofforwardpaths
【原文标准名称】:电视信号,声音信号和交互式设备用电缆网络.正向传输路径的系统性能
【标准号】:BSEN60728-1-2008
【标准状态】:现行
【国别】:英国
【发布日期】:2008-08-29
【实施或试行日期】:2008-08-29
【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】:天线系统;音频信号;电缆分布系统;电缆电视;电缆电视系统;电缆分配系统;共用天线电视;同轴;同轴电缆;兼容性;定义(术语);电气工程;交互式的;测量技术;性能;性能要求;额定值;接收天线;信号传输;声音广播;规范(验收);电视广播;电视传输;电视信号
【英文主题词】:Antennasystems;Audiosignals;Cabledistributionsystems;Cabletelevision;Cabletelevisionsystem;Cableddistributionsystems;CATV;Coaxial;Coaxialcables;Compatibility;Definitions;Electricalengineering;Interactive;Measuringtechniques;Performance;Performancerequirements;Ratings;Receptionantennae;Signaltransmission;Soundbroadcasting;Specification(approval);Televisionbroadcasting;Televisiontransmission;Visionsignals
【摘要】:ThispartofIEC60728isapplicabletoanycablenetwork(includingindividualreceivingsystems)havingintheforwardpathacoaxialcableoutputandprimarilyintendedfortelevisionandsoundsignalsoperatingbetweenabout30MHzand3000MHz.Thisstandardspecifiesthebasicmethodsofmeasurementoftheoperationalcharacteristicsofcablenetworkhavingcoaxialcableoutputsinordertoassesstheperformanceofthesesystemsandtheirperformancelimits.Allrequirementsrefertotheperformancelimits,whichshallbeobtainedbetweentheinput(s)totheheadendorheadendsandanysystemoutletwhenterminatedinaresistanceequaltothenominalloadimpedanceofthesystem,unlessotherwisespecified.Wheresystemoutletsarenotused,theaboveappliesatthesubscriber’sendofthesubscriber’sfeeder.Alsotherequirementswhichareobtainedbetweentheinput(s)totheheadendorheadendsandanyhomenetworkinterface(HNI)aregiven.NOTE1Methodsofmeasurementdescribedinthisstandardareconsideredasbasic.However,anyequivalentmethodthatensuresatleastthesameaccuracymaybeused.NOTE2Ifthesystemoperatorwishestosubdividethesystemintoanumberofpartsorwishestousedifferenttransmissionmedia(forexample,coaxialcabling,balancedcabling,opticalcabling),theaccumulationofdegradationsshouldnotexceedthefiguresgiveninthisstandard.NOTE3SystemperformancerequirementsofreturnpathsaswellasspecificmethodsofmeasurementfortheuseofthereturnpathsincablenetworksaredescribedinIEC60728-10.Clause5definesthesystemperformancelimitswhichwill,withanunimpairedinput,(headendinputsignal),producepictureandsoundsignals(atsystemoutlets)wheretheimpairmenttoanysingleparameterwillbenotworse,innormaloperatingconditionsforanyanaloguechannel,thanGradefouronthefive-gradeimpairmentscalecontainedinITU-BT500-10.Fordigitallymodulatedsignals,thequalityrequirementisaquasi-error-free(QEF)reception.AppropriateperformancerequirementsforthesignalsatthereceivingantennassitearegiveninClause6inordertoprovideattheinputoftheheadendofthecablenetworkbothanalogueanddigitaltelevisionsignalswithsuitablequality.Clause7isapplicabletohomenetworks(includingthoseofindividualreceivingsystems)usingcoaxialcables,balancedcablesoropticalcablesandprimarilyintendedfortelevisionsignals,soundsignalsandinteractiveservices,operatingbetweenabout30MHzand3000MHz.Thisclause,consideringthebasicoperationalcharacteristicsofahomenetwork,specifiestherequirementswhichshallbeobtainedatthehomenetworkinterface(HNI)takingintoaccounttheperformancerequirementsgivenatthesystemoutletorattheterminalinput.
【中国标准分类号】:M62
【国际标准分类号】:33_060_40
【页数】:160P;A4
【正文语种】:英语


【英文标准名称】:PERSONALEYE-PROTECTION.EYE-PROTECTORSFORADJUSTMENTWORKONLASERSANDLASERSYSTEMS(LASERADJUSTMENTEYE-PROTECTORS).(EUROPEANSTANDARDEN208).
【原文标准名称】:个人眼睛保护.用于激光和激光系统调节工作的护目镜
【标准号】:NFS77-112-1994
【标准状态】:作废
【国别】:法国
【发布日期】:1994-02
【实施或试行日期】:1994-01-20
【发布单位】:法国标准化协会(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】:
【中国标准分类号】:C73
【国际标准分类号】:
【页数】:11P;A4
【正文语种】:其他