GB/T 14540.4-1993 复混肥料中锌的测定方法
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来源:标准资料网
基本信息
标准名称: | 复混肥料中锌的测定方法 |
英文名称: | Determination of zinc content for compound fertilizers |
中标分类: |
化工 >>
化肥、农药 >>
化肥基础标准与通用方法 |
ICS分类: |
农业 >>
肥料
|
替代情况: | 被GB/T 14540-2003代替 |
发布日期: | 1993-12-30 |
实施日期: | 1994-03-01 |
首发日期: | 1900-01-01 |
作废日期: | 2003-12-01 |
出版日期: | 1900-01-01 |
页数: | 6页 |
适用范围
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前言
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目录
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引用标准
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所属分类: 化工 化肥 农药 化肥基础标准与通用方法 农业 肥料
Product Code:SAE AS4224
Title:Fitting Assembly, Tee, Beam Seal, Retained Nut on Side
Issuing Committee:G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Scope:Scope unavailable.【英文标准名称】:Digitalradiomondiale(DRM)-Digitalradiointhebandsbelow30MHz-MethodsofmeasurementforDRMtransmitters
【原文标准名称】:全球数字无线广播(DRM).波段小于30MHz的数字无线广播.DRM发射机的测量方法
【标准号】:BSEN62272-2-2007
【标准状态】:现行
【国别】:英国
【发布日期】:2007-05-31
【实施或试行日期】:2007-05-31
【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】:频带;广播工程学;广播;特征;传播学;传播技术;定义;数字的;数字广播;数字连接;数字数据;数字工程;数字无线电链接;电气工程;频率;频率范围;测量;测量技术;功率输出;无线电工程;无线电系统;无线电发射机;无线电通信;额定输出功率;声音广播发射;规范;规范(验收);远程通信;电信传输法;电信;传输性能
【英文主题词】:Bandoffrequencies;Broadcastengineering;Broadcasting;Characteristics;Communication;Communicationtechnology;Definition;Definitions;Digital;Digitalbroadcasting;Digitalconnections;Digitaldata;Digitalengineering;Digitalradiolinks;Electricalengineering;Frequencies;Frequencyranges;Measurement;Measuringtechniques;Poweroutput;Radioengineering;Radiosystems;Radiotransmitters;Radiocommunication;Ratedoutputpower;Sound-broadcastingemissions;Specification;Specification(approval);Telecommunication;Telecommunicationtransmissionmethods;Telecommunications;Transmissionperformance;Transmissionperformances
【摘要】:ThispartofIEC62272describesthemethodsofmeasurementtoassesstheperformancecharacteristicsofdigitalmodulatedradiotransmittersinthebandsbelow30MHzforsoundand/ordatabroadcastingintheLF,MFandHFbands,andtofacilitatethecomparisonofmeasurementswhicharecarriedoutbydifferentpersonnel.Itcontainsdetailsofspeciallyselectedmethodsfordeterminingthemostimportantperformanceparametersofdigitalradiotransmitters.Themeasurementmethodsdescribedapplytoalimitednumberofperformanceparameters,i.e.thosewhichcangiverisetoambiguousinterpretationduetotheuseofdifferentmethodsandconditions.Theyareneitherrestrictivenormandatory:measurementscanbechosenforeachparticularcase.Themeasurementmethodsdescribedinthisstandardareintendedtobeusedfortypeapprovaltests,qualitycontroltestsoracceptancetestmeasurementsinfactoriesandonsite.Feweroradditionalmeasurementsmaybecarriedoutbyagreementbetweencustomerandsupplier.Anyadditionaltestshouldcomplywithstandardswhichhavebeenestablishedbyotherstudygroups,subcommitteesoftheIECorotherinternationalorsuitablyaccreditedorganizations.Thisstandarddoesnotspecifylimitingvaluesforacceptableperformanceastheseareusuallygivenintheequipmentspecificationorinrequirementslaiddownbytheresponsibleregulationbodies.However,somevaluesarequoted,whereappropriate,forguidanceinthepresentationoftheresults.
【中国标准分类号】:M74
【国际标准分类号】:33_170
【页数】:24P.;A4
【正文语种】:英语