DIN EN 3961-2002 航空航天系列.金基合金AU-B40001.铜焊填充金属:轧制箔片;德文版本EN3961:2001
作者:标准资料网 时间:2024-05-19 17:14:57 浏览:9253
来源:标准资料网
【英文标准名称】:Aerospaceseries-GoldbasealloyAU-B40001-Fillermetalforbrazing,rolledfoil;GermanversionEN3961:2001
【原文标准名称】:航空航天系列.金基合金AU-B40001.铜焊填充金属:轧制箔片;德文版本EN3961:2001
【标准号】:DINEN3961-2002
【标准状态】:现行
【国别】:德国
【发布日期】:2002-07
【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】:硬钎焊合金;规范(验收);材料;航天运输;多语种的;航空运输;金合金;箔;合金;化学成分;航空航天运输;冷轧的
【英文主题词】:Aerospacetransport;Airtransport;Alloys;Brazingalloys;Chemicalcomposition;Coldrolled;Foil;Goldalloys;Materials;Multilingual;Spacetransport;Specification(approval)
【摘要】:
【中国标准分类号】:V11
【国际标准分类号】:49_025_15
【页数】:7P;A4
【正文语种】:德语
【英文标准名称】:Acoustics-Noiseemittedbymachineryandequipment-Measurementofemissionsoundpressurelevelsataworkstationandatotherspecifiedpositions-Surveymethodinsitu
【原文标准名称】:声学.机械装置及设备发出的噪声.工作地点和其它试验场所声压级的测量.现场调查法
【标准号】:BSENISO11202-1996
【标准状态】:作废
【国别】:英国
【发布日期】:1996-11-15
【实施或试行日期】:1996-11-15
【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】:再现性;准确度;测量特征;试验设备;试验条件;现场试验;声学测量;操作工位;噪声(环境的);等级(质量);声学;声强
【英文主题词】:Acousticmeasurement;Acoustictesting;Acoustics;Airbornenoise;Definitions;Emission;Emissionmeasurement;Ergonomics;Externalnoise;Fieldtesting;Insitu;Inserts;Instruments;Machinenoise;Machines;Measurement;Measuringenvironment;Measuringincertainity;Measuringinstruments;Measuringtechniques;Methods;Noise;Noiseemissions;Noisemeasurements;Operatingconditions;Operatingstations;Position;Precision;Radiation;Soundintensity;Soundlevels;Soundpressure;Soundpressurelevel;Soundpropagation;Specification(approval);Workingplaces
【摘要】:1GeneralThisInternationalStandardspecifiesamethodformeasuringtheemissionsoundpressurelevelsofmachineryandequipment,ataworkstationandatotherspecifiedpositionsnearby,inasemi-reverberantfield.EmissionsoundpressurelevelaremeasuredasA-weightedand,ifrequired,C-weightedpeak.NOTE1ThecontentsofthisandrelatedInternationalStandardsaresummarizedintable1ofISO11200:1995.Amethodisgivenfordeterminingalocalenvironmentcorrection(subjecttoaspecifiedlimitingmaximumvalue)tobeappliedtothemeasuredsoundpressurelevelsinordertoexcludeatleastpartoftheeffectsofreflectionsfromreflectingsurfacesotherthantheplaneonwhichthemachineryorequipmentisplaced.Thiscorrectionisbasedontheequivalentsoundab-sorptionareaofthetestroom.Aworkstationisoccupiedbyanoperator.Itmaybelocatedinopenspaceintheroomwherethesourceoperates,orinacabfixedtothesource,orinanen-closureremotefromthesource.Oneormorespeci-fiedpositionsmaybelocatedinthevicinityofanattendedorunattendedmachine.Suchpositionsaresometimesreferredtoasbystanderpositions.ThisInternationalStandardspecifiesrequirementsforthesurveygradeofaccuracyonthetestenvironmentandinstrumentation.Instructionsaregivenforthein-stallationandoperationofthemachineundertestandforthechoiceofmicrophonepositionsfortheworkstationandforotherspecifiedpositions.Thepurposeofthemeasurementsistopermitcomparisonoftheperformanceofdifferentunitsofagivenfamilyofmachineryorequipment,underdefinedenviron-mentalconditionsandstandardizedmountingandop-eratingconditions.ThedataobtainedmayalsobeusedforthedeclarationandverificationofemissionsoundpressurelevelsasspecifiedinISO4871.NOTE2Atanygivenpositioninrelationtoaparticularmachine,andforgivenmountingandoperatingconditions,theemissionsoundpressurelevelsdeterminedbythemethodofthisInternationalStandardwillingeneralbelowerthanthedirectlymeasuredsoundpressurelevelsforthesamemachineinthetypicalworkroomwhereitisused.Thisisduetoreverberationandthecontributionsofothermachines.Amethodofcalculatingthesoundpressurelev-elsinthevicinityofamachineoperatingaloneinaworkroomisgiveninISO11690-3.Commonlyobserveddifferencesare1dBto5dB,butinextremecasesthedif-ferencemaybeevengreater.2TypesofnoiseandnoisesourcesThemethodspecifiedinthisInternationalStandardisapplicabletoalltypesofmachinery,bothmovingandstationary,forindoororoutdooruse.Themethodisapplicabletomachinesofallsizes,andtoalltypesofnoiseasdefinedinISO2204andISO12001.3TestenvironmentThemethodisapplicabletoanindoororoutdooren-vironmentwithoneormorereflectingplanespresent,meetingspecifiedrequirements.4SpecifiedpositionsThisInternationalStandardisapplicabletoworkstationsandotherspecifiedpositionswhereemissionsoundpressurelevelsaretobemeasured.Examplesofappropriatepositionswheremeasure-mentsmaybemadeincludethefollowing:a)workstationlocatedinthevicinityofthemachineundertest;thisisthecaseformanyindustrialmachinesanddomesticappliances;b)workstationwithinacabwhichisanintegralpartofthemachineundertest;thisisthecaseformanyindustrialtrucksandearth-movingma-chines;c)workstationwithinapartialortotalenclosure(orbehindascreen)suppliedbythemanufacturerasanintegralpartofthemachineryorequipment;d)workstationpartiallyortotallyenclosedbythemachineundertest;thissituationmaybeen-counteredwithsomelargeindustrialmachines;e)bystanderpositionsoccupiedbyindividualsnotresponsiblefortheoperationofthemachineun-dertest,butwhomaybeinitsimmediatevicini
【中国标准分类号】:Z32
【国际标准分类号】:17_140_20
【页数】:24P;A4
【正文语种】:英语
基本信息
标准名称: | 化学试剂 甲酸 |
英文名称: | Chemical reagent Formic acid |
中标分类: |
化工 >>
化学试剂 >>
一般有机试剂、有机溶剂 |
ICS分类: |
化工技术 >>
分析化学 >>
化学试剂
|
替代情况: | HG 3-1296-1980 |
发布部门: | 国家技术监督局 |
发布日期: | 1995-01-02 |
实施日期: | 1996-08-01 |
首发日期: | 1995-12-22 |
作废日期: | 1900-01-01 |
主管部门: | 中国石油和化学工业协会 |
归口单位: | 全国化学标准化技术委员会 |
起草单位: | 北京化工厂 |
出版社: | 中国标准出版社 |
出版日期: | 1900-01-01 |
页数: | 平装16开, 页数:6, 字数:7千字 |
适用范围
本标准规定了化学试剂甲酸的技术要求、试验方法、检验规则和包装及标志。本标准适用于化学试剂甲酸的检验。
前言
没有内容
目录
没有内容
引用标准
没有内容
所属分类: 化工 化学试剂 一般有机试剂 有机溶剂 化工技术 分析化学 化学试剂