JIS G1311-1998 锰铁的化学分析方法

上一篇: DIN 58742-1998 光学工程生产.镶宝石的定心砂轮和特殊型面的砂轮
下一篇: NF E66-308-1998 带部分圆柱形固定孔的圆角的可转位硬质合金镶嵌刀片.尺寸

【英文标准名称】:Aerospaceseries-Circuitbreakers-Testmethods-Part405:Fluidresistance;GermanandEnglishversionEN3841-405:2004
【原文标准名称】:航空航天系列.断路器.试验方法.第405部分:防水
【标准号】:DINEN3841-405-2005
【标准状态】:现行
【国别】:德国
【发布日期】:2005-09
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:开关;试验条件;开关设备;规范(验收);航天运输;断路器;试验(质量保证);电气工程;航空运输;耐力;试验;航空航天运输;液体;多语种的
【英文主题词】:Aerospacetransport;Airtransport;Circuit-breakers;Electricalengineering;Examination(qualityassurance);Liquids;Multilingual;Resistance;Spacetransport;Specification(approval);Switches;Switchgear;T
【摘要】:ThisstandardspecifiesamethodofverifyingthecircuitbreakersabilitytowithstandfluidsasdefinedinEN3909.ItshallbeusedtogetherwithEN3841-100.
【中国标准分类号】:V40
【国际标准分类号】:49_060
【页数】:10P;A4
【正文语种】:德语


【英文标准名称】:Liquidpumpsandpumpunits-Noisetestcode-Grade2andgrade3ofaccuracy
【原文标准名称】:液压泵和泵组.噪音测试规程.2级和3级精度
【标准号】:BSEN12639-2000
【标准状态】:作废
【国别】:英国
【发布日期】:2000-05-15
【实施或试行日期】:2000-05-15
【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】:使用条件;验证;尺寸;噪声(环境的);声试验;口述;位置;安装细则;声学试验;流体设备;测绘;试验条件;设计;测量;表面;空气噪声;额定功率;泵;声学测量;传声器;分级(质量);噪声控制;声强
【英文主题词】:Acousticmeasurement;Acoustics;Airbornenoise;Airbornenoiseemitted;Applications;Centrifugalpumps;Checkpoint;Classificationsystems;Definitions;Eductors;Envelopingsurfacemethods;Environment;Externalnoise;Handling;Interpretations;Layout;Liquidpumps;Machines;Measurement;Measurementconditions;Measurementofairbornenoise;Measuringdistances;Measuringenvironment;Measuringincertainity;Measuringinstruments;Measuringobjects;Measuringresults;Measuringsurfaces;Measuringtechniques;Mechanicalengineering;Microphones;Noise;Noiseabatement;Noiseemissions;Noise(environmental);Noisemeasurements;Operatingconditions;Pollutioncontrol;Positive-displacementpumps;Precision;Pumpunit;Pumps;Referencecubes;Soundlevel;Soundpower;Soundpressure;Soundpressurelevel;Soundpressurespectrum;Testreport;Testingshop;Usage;Vibrationengineering
【摘要】:ThisEuropeanStandardspecifiesalltheinformationnecessarytocarryoutefficientlyandunderstandardizedconditionsthedetermination,declarationandverificationoftheairbornenoiseemissionofliquidpumpsorpumpunits(see4.1).Itspecifiesthenoisemeasurementmethodsandtheoperatingandmountingconditionsthatshallbeusedforthetest.Noiseemissioncharacteristicsincludeemissionsoundpressurelevelsatspecifiedpositionsandthesoundpowerlevel.Thedeterminationofthesequantitiesisnecessaryfor:—declaringthenoiseemissionvalues;—purposeofnoisecontrolatsourceatthedesignstage.NOTEThedeterminationofthesequantitiesisalsonecessaryforcomparingthenoiseemittedbyliquidpumpsonthemarket.TheuseofthisEuropeanStandardensuresthereproducibilityofthedeterminationoftheairbornenoiseemissioncharacteristicswithinspecifiedlimitsdeterminedbythegradeofaccuracyofthebasicairbornenoisemeasurementmethodused.NoisemeasurementmethodsaccordingtothisEuropeanStandardareengineeringmethods(grade2)andsurveymethods(grade3).ThisEuropeanStandarddoesnotdealwiththecharacterizationofthestructure-bornesoundandliquid-bornenoisegeneratedbyliquidpumps.ThisEuropeanStandardisintendedtocomplementEN809.
【中国标准分类号】:J71
【国际标准分类号】:17_140_20;23_080
【页数】:28P;A4
【正文语种】:英语