EN 12070-1999 焊接消耗材料.抗蠕变钢的电弧焊接用焊丝电极、焊丝和焊条.分类
作者:标准资料网 时间:2024-05-12 01:53:40 浏览:9181
来源:标准资料网
【英文标准名称】:Weldingconsumables-Wireelectrodes,wiresandrodsforarcweldingofcreep-resistingsteels-Classification;GermanversionEN12070:1999
【原文标准名称】:焊接消耗材料.抗蠕变钢的电弧焊接用焊丝电极、焊丝和焊条.分类
【标准号】:EN12070-1999
【标准状态】:现行
【国别】:
【发布日期】:2000-01
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:电焊;填充金属;焊丝电极;规范(验收);分类;惰性气体保护电弧焊;焊条;钢;化学成分;名称与符号;焊接;作标记;储存;电焊条;埋弧焊;电焊条;填充金属丝;气体保护焊;焊接工程;焊接填充金属;耐热的;吸湿干燥;电弧焊接
【英文主题词】:
【摘要】:焊接消耗材料.抗蠕变钢的电弧焊接用焊丝电极、焊丝和焊条.分类
【中国标准分类号】:J33
【国际标准分类号】:25_160_20
【页数】:7P;A4
【正文语种】:英语
【英文标准名称】:Acoustics-Determinationofsoundpowerlevelsofnoisesourcesusingsoundintensity-Precisionmethodformeasurementbyscanning
【原文标准名称】:声学.利用声强度对噪声源声功率级别进行的测定.使用扫描精确测量法
【标准号】:BSENISO9614-3-2002
【标准状态】:作废
【国别】:英国
【发布日期】:2002-11-22
【实施或试行日期】:2002-11-22
【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】:声功率;测量;噪声辐射;声学试验;噪声测量;机器;噪声;扫描;特性;扫描器;声学测量;声学;声级;性质;测定;定义;定义;声强度;声源;连续的;方法
【英文主题词】:Acousticmeasurement;Acoustictesting;Acoustics;Calibration;Continuous;Definitions;Determination;Earprotectors;Externalnoise;Intensity;Machines;Measurement;Measuringenvironment;Measuringincertainity;Measuringinstruments;Measuringtechniques;Methods;Noise;Noiseemissions;Noise(environmental);Noisemeasurements;Noisesources;Precision;Properties;Scanners;Scanning;Soundfields;Soundintensity;Soundlevel;Soundpower;Soundsources;Specification(approval);Temperature;Winds
【摘要】:ISO9614-3:2002specifiesamethodformeasuringthecomponentofsoundintensitynormaltoameasurementsurfacewhichischosensoastoenclosethesoundsource(s)ofwhichthesoundpowerlevelistobedetermined.Surfaceintegrationoftheintensitycomponentnormaltothemeasurementsurfaceisapproximatedbysubdividingthemeasurementsurfaceintocontiguouspartialsurfaces,andscanningtheintensityprobeovereachpartialsurfacealongacontinuouspathwhichcoverstheextentofthepartialsurface.Themeasurementinstrumentdeterminestheaveragednormalintensitycomponentandaveragedsquaredsoundpressureoverthedurationofeachscan.Thescanningoperationcanbeperformedeithermanuallyorbymeansofamechanicalsystem.Theoctavebandorband-limitedweightedsoundpowerleveliscalculatedfromthemeasuredone-third-octave-bandvalues.Themethodisapplicabletoanysourceforwhichaphysicallystationarymeasurementsurfacecanbedefined,andonwhichthesoundgeneratedbythesourceundertestandbyothersignificantextraneoussourcesarestationaryintime.Thesourceisdefinedbythechoiceofmeasurementsurface.ThemethodisapplicableinspecifictestenvironmentsfulfillingallrelevantrequirementsofISO9614-3.ISO9614-3specifiescertainancillaryprocedures,describedinannexC,tobefollowedinconjunctionwiththesoundpowerdetermination.Theresultsareusedtoindicatethequalityofthedetermination,andhencethegradeofaccuracy.IfthequalityofthedeterminationdoesnotmeettherequirementsofISO9614-3,thetestprocedureshallbemodifiedinthemannerindicated.ISO9614-3isnotapplicabletoanyfrequencybandinwhichthesoundpowerofthesourceisfoundtobenegativeonmeasurement.Itisapplicabletosourcessituatedinanyenvironmentwhichisneithersovariableovertimeastoreducetheaccuracyofthemeasurementofsoundintensitytoanunacceptabledegree,norsubjectstheintensitymeasurementprobetogasflowsofunacceptablespeedorunsteadiness.InsomecasesitwillbefoundthatthetestconditionsaretooadversetoallowtherequirementsofISO9614-3tobemet.Forexample,extraneousnoiselevelscanexceedthedynamiccapabilityofthemeasuringinstrumentorcanvarytoanexcessivedegreeduringthetest.InsuchcasesthemethodgiveninISO9614-3isnotsuitableforthedeterminationofthesoundpowerlevelofthesource.
【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
基本信息
标准名称: | 集成电路半导体器件 第2部分:数字集成电路 |
英文名称: | Semiconductor devices--Integrated circuits--Part 2: Digital integrated circuits |
中标分类: |
电子元器件与信息技术 >>
微电路 >>
半导体集成电路 |
替代情况: | 被GB/T 17574-1998代替 |
发布日期: | 1987-09-14 |
实施日期: | 1987-09-14 |
首发日期: | |
作废日期: | 1999-06-01 |
出版日期: | |
页数: | 121页 |
适用范围
没有内容
前言
没有内容
目录
没有内容
引用标准
没有内容
所属分类: 电子元器件与信息技术 微电路 半导体集成电路