ISO 6351-1985 镍银、铋、镉、钴、铜、铁、锰、铅和锌含量的测定火焰原子吸收光谱测定法
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【英文标准名称】:Nickel;Determinationofsilver,bismuth,cadmium,cobalt,copper,iron,manganese,leadandzinccontents;Flameatomicabsorptionspectrometricmethod
【原文标准名称】:镍银、铋、镉、钴、铜、铁、锰、铅和锌含量的测定火焰原子吸收光谱测定法
【标准号】:ISO6351-1985
【标准状态】:现行
【国别】:国际
【发布日期】:1985-12
【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/TC155
【标准类型】:()
【标准水平】:()
【中文主题词】:铁;钴;原子吸收分光光度测定法;镍;铋;锌;化学分析和试验;铜;含量测定;镉;铅;原子吸收法;化学分析;锰
【英文主题词】:Atomicabsorptionspectrophotometry;Bismuth;Cadmium;Chemicalanalysisandtesting;Cobalt;Copper;Determinationofcontent;Iron;Lead;Manganese;Nickel;Zinc
【摘要】:Appliestorefined,wroughtandcastnickelwithintherangesspecifiedintable1.Themethodisapplicabletotheindependentdeterminationofanyoneormoreoftheelementslisted.Thelowerlevelforironcanbeextendedtolessthan0,0025%(m/m)providedaspecialstandardsolutionisprepared.Theupperlimitforthedeterminationofcobaltandcoppercanberaisedto2%(m/m)byaminormodificationtothemethod.Forpotentialinterferences,seeclause10.
【中国标准分类号】:H10
【国际标准分类号】:77_120_40
【页数】:11P;A4
【正文语种】:英语
【英文标准名称】:Cablenetworksfortelevisionsignals,soundsignalsandinteractiveservices-Part3:Activewidebandequipmentforcoaxialcablenetwork
【原文标准名称】:电视信号、声音信号和交互设备用电缆网络.第3部分:同轴电缆网络用有源宽带设备
【标准号】:IEC60728-3-2005
【标准状态】:作废
【国别】:国际
【发布日期】:2005-06
【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);定义;测量;交互的;电视信号;宽频带传输;数字的;同轴电缆;信号;信号传输;性能要求;电视接收;宽带系统;电缆分布系统;声音广播;放大器
【英文主题词】:Amplifiers;Broadbandsystems;Cabledistributionsystems;Coaxialcables;Definitions;Digital;Interactive;Measurement;Performancerequirements;Signaltransmission;Signals;Soundbroadcasting;Specification(approval);Televisionreception;Visionsignals;Widebandtransmission
【摘要】:ThispartofIEC60728laysdownthemeasuringmethods,performancerequirementsanddatapublicationrequirementsforactivecoaxialwidebanddistributionequipmentofcablenetworksfortelevisionandsoundsignals.Thisstandardappliestoallbroadbandamplifiersusedincablenetworksandcoversthefrequencyrange5MHzto3000MHz.Italsoappliestoone-wayandtwo-wayequipment.NOTETheupperlimitof3000MHzisanexample,butnotastrictvalue.Thefrequencyrange,orranges,overwhichtheequipmentisspecified,shouldbepublished.Allrequirementsandpublisheddataareunderstoodasguaranteedvalueswithinthespecifiedfrequencyrangeandinwell-matchedconditions.Thisstandard·appliestoallbroadbandamplifiersusedincablenetworks;·coversthefrequencyrange5MHzto3000MHz;·appliestoone-wayandtwo-wayequipment;·laysdownthebasicmethodsofmeasurementoftheoperationalcharacteristicsoftheactiveequipmentinordertoassesstheperformanceofthisequipment;·identifiestheperformancespecificationsthatshallbepublishedbythemanufacturers;·statestheminimumperformancerequirementsofcertainparameters.Amplifiersaredividedintothefollowingtwoqualitylevels:Grade1:amplifierstypicallyintendedtobecascaded.Grade2:amplifiersforusetypicallywithinanapartmentblock,orwithinasingleresidence,tofeedafewoutlets.Practicalexperiencehasshownthesetypesmeetmostofthetechnicalrequirementsnecessaryforsupplyingaminimumsignalqualitytothesubscribers.Thisclassificationshallnotbeconsideredasarequirementbutastheinformationforusersandmanufacturersontheminimumqualitycriteriaofthematerialrequiredtoinstallnetworksofdifferentsizes.Thesystemoperatorhastoselectappropriatematerialtomeettheminimumsignalqualityatthesubscriber'soutlet,andtooptimisecost/performance,takingintoaccountthesizeofthenetworkandlocalcircumstances.Allrequirementsandpublisheddataareunderstoodasguaranteedvalueswithinthespecifiedfrequencyrangeandinwell-matchedconditions.
【中国标准分类号】:M11
【国际标准分类号】:33_060_40
【页数】:66P.;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforLow-TemperatureFlexibilityandTenacityofOne-Part,Elastomeric,Solvent-ReleaseTypeSealants
【原文标准名称】:单一组份的弹性溶剂释放型密封料的低温挠性及韧性的标准试验方法
【标准号】:ASTMC711-2003(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:2003
【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】:C24.20
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:elastomeric;flexibility;solvent-releasesealant;Elastomericseals/sealants;Flexibility--sealants;Solvent-releasesealants;Temperaturetests--buildingmaterials;Tenacity
【摘要】:Thistestmethodisnotintendedtosimulateanactualuseconditionbutitwillgivesomeindicationoftheelastomericpropertiesorflexibilityofabuildingjointsealantatlowtemperature.Itcanservetodifferentiatebetweenelastomer-basedsealantsandsealantsbasedonnonelasticbindersthatcanhardenorembrittleonagingandcrackorloseadhesionwhenflexedatlowtemperature.Inaddition,itcanaidinidentifyingsealantsthathavepoorflexibilitybecausetheyareoverextendedandcontainaverylowlevelofelastomericbinderaswellasthosesealantshavingbindersthatwillembrittleatlowtemperature.
(a)CompleteCrackingandAdhesiveFailure
(b)SevereCracking
(c)NoCrackingorAdhesiveFailure
