DIN EN 2633-1994 航空航天系列.铝合金AL-P2024-T3511;挤压棒材和截面：1,2mma或D150mm,周边粗晶控制
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【英文标准名称】:Aerospaceseries;aluminiumalloyAL-P2024-T3511;extrudedbarsandsections;1,2mmaorD150mm,withperipheralcoarsegraincontrol;GermanversionEN2633:1993
【原文标准名称】:航空航天系列.铝合金AL-P2024-T3511;挤压棒材和截面：1,2mma或D150mm,周边粗晶控制
【标准号】:DINEN2633-1994
【标准状态】:现行
【国别】:德国
【发布日期】:1994-02
【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】:金属;挤压的;铝型材;有色金属合金;有色金属;检验;竿材;航天运输;半成品;挤压;铝合金;外形;航空运输;粗粒材料;挤压型材;金属型材;界限范围;航空航天运输
【英文主题词】:Aerospacetransport;Airtransport;Aluminiumalloys;Aluminiumprofile;Checks;Coarse-grainmaterial;Extruded;Extrudedsections;Extruding;Marginzones;Metalsections;Metals;Non-ferrousalloys;Non-ferrousmetals;Poles;Profile;Semi-finishedproducts;Spacetransport
【摘要】:
【中国标准分类号】:V11
【国际标准分类号】:49_025_20
【页数】:10P.;A4
【正文语种】:德语
【英文标准名称】:Solidmineralfuels-Determinationofnitrogen-Semi-microgasificationmethod
【原文标准名称】:固体矿物燃料.氮的测定.半微量气化法
【标准号】:BSDDISO/TS11725-2002
【标准状态】:作废
【国别】:英国
【发布日期】:2002-09-26
【实施或试行日期】:2002-09-26
【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】:焦炭;容量分析;氮含量;含量测定;矿物;木炭;矿物燃料;半微量分析;氮;固体燃料;煤;化学分析和试验
【英文主题词】:Charcoal;Chemicalanalysisandtesting;Coal;Coke;Determinationofcontent;Fossilfuels;Minerals;Nitrogen;Nitrogencontent;Semi-microanalysis;Solidfuels;Volumetricanalysis
【摘要】:
【中国标准分类号】:D21
【国际标准分类号】:75_160_10
【页数】:20P;A4
【正文语种】:英语
【英文标准名称】:Acoustics-Determinationofsoundpowerlevelsofnoisesourcesusingsoundintensity-Precisionmethodformeasurementbyscanning
【原文标准名称】:声学.用声强测定噪声源的声功率级.扫描测量法
【标准号】:BSENISO9614-3-2009
【标准状态】:现行
【国别】:英国
【发布日期】:2010-04-30
【实施或试行日期】:2010-04-30
【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】:
【英文主题词】:Acousticmeasurement;Acoustictesting;Acoustics;Calibration;Continuous;Definitions;Determination;Earprotectors;Externalnoise;Intensity;Machinenoise;Machines;Measurement;Measuringenvironment;Measuringincertainity;Measuringinstruments;Measuringsurfaces;Measuringtechniques;Methods;Noise;Noiseemissions;Noise(environmental);Noisemeasurements;Noisesources;Precision;Properties;Scanners;Scanning;Soundfields;Soundintensity;Soundlevel;Soundpower;Soundpressure;Soundsources;Specification(approval);Temperature;Testing;Winds
【摘要】:1.1ThispartofISO9614specifiesamethodformeasuringthecomponentofsoundintensitynormaltoameasurementsurfacewhichischosensoastoenclosethesoundsource(s)ofwhichthesoundpowerlevelistobedetermined.Surfaceintegrationoftheintensitycomponentnormaltothemeasurementsurfaceisapproximatedbysubdividingthemeasurementsurfaceintocontiguouspartialsurfaces,andscanningtheintensityprobeovereachpartialsurfacealongacontinuouspathwhichcoverstheextentofthepartialsurface.Themeasurementinstrumentdeterminestheaveragednormalintensitycomponentandaveragedsquaredsoundpressureoverthedurationofeachscan.Thescanningoperationcanbeperformedeithermanuallyorbymeansofamechanicalsystem.Theoctavebandorband-limitedweightedsoundpowerleveliscalculatedfromthemeasuredone-third-octavebandvalues.Themethodisapplicabletoanysourceforwhichaphysicallystationarymeasurementsurfacecanbedefined,andonwhichthesoundgeneratedbythesourceundertestandbyothersignificantextraneoussourcesarestationaryintime.Thesourceisdefinedbythechoiceofmeasurementsurface.ThemethodisapplicableinspecifictestenvironmentsfulfillingallrelevantrequirementsofthispartofISO9614.ThispartofISO9614specifiescertainancillaryprocedures,describedinannexC,tobefollowedinconjunctionwiththesoundpowerdetermination.Theresultsareusedtoindicatethequalityofthedetermination,andhencethegradeofaccuracy.IfthequalityofthedeterminationdoesnotmeettherequirementsofthispartofISO9614,thetestprocedureshallbemodifiedinthemannerindicated.ThispartofISO9614isnotapplicabletoanyfrequencybandinwhichthesoundpowerofthesourceisfoundtobenegativeonmeasurement.1.2ThispartofISO9614isapplicabletosourcessituatedinanyenvironmentwhichisneithersovariableovertimeastoreducetheaccuracyofthemeasurementofsoundintensitytoanunacceptabledegree,norsubjectstheintensitymeasurementprobetogasflowsofunacceptablespeedorunsteadiness(see5.2.2,5.3and5.4).InsomecasesitwillbefoundthatthetestconditionsaretooadversetoallowtherequirementsofthispartofISO9614tobemet.Forexample,extraneousnoiselevelscanexceedthedynamiccapabilityofthemeasuringinstrumentorcanvarytoanexcessivedegreeduringthetest.InsuchcasesthemethodgiveninthispartofISO9614isnotsuitableforthedeterminationofthesoundpowerlevelofthesource.
【中国标准分类号】:Z32
【国际标准分类号】:17_140_01
【页数】:48P.;A4
【正文语种】:英语
