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ISO 4869-1-1990 声学护听器第1部分:声衰减测量的主观法

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【英文标准名称】:Acoustics;hearingprotectors;part1:subjectivemethodforthemeasurementofsoundattenuation
【原文标准名称】:声学护听器第1部分:声衰减测量的主观法
【标准号】:ISO4869-1-1990
【标准状态】:现行
【国别】:国际
【发布日期】:1990-12
【实施或试行日期】:1990-12-15
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC43
【标准类型】:()
【标准水平】:()
【中文主题词】:声学;隔音;声学测量;护耳器;衰减
【英文主题词】:Acousticmeasurement;Acoustics;Attenuation;Audiobility;Auditorythreshold;Closedtestrooms;Convergence;Definitions;Earmuffs;Earplugs;Earprotectors;Ear-mufftypewearingprotectors;Electricalengineering;Insulations;Listeningtests;Lossofhearing;Measurement;Measurementofthresholdofaudibility;Measuringequipment;Measuringresults;Methods;Methodsformeasuring;Noise;Noiseabatement;Noisecontrol;Noisemeasurements;Safetydevices;Signals;Sound;Soundinsulation;Soundpressure;Soundpressurelevel;Testpersons;Testing;Vibrationengineering
【摘要】:Specifiesamethodformeasuringsoundattenuationatthethresholdofhearing.Theprocedureisdesignedtoyieldvaluesclosetothemaximumattenuationwhicharenotnormallyattainedunderfieldconditions.Thevaluesreflecttheattenuatingcharacteristicsonlytotheextentthatuserswearthedeviceinthesamemannerasdidthetestsubjects.Dataarecollectedatlowsoundpressurelevelsbutwhicharealsorepresentativeofthevaluesathighersoundpressurelevels.
【中国标准分类号】:C71
【国际标准分类号】:13_340_20
【页数】:7P.;A4
【正文语种】:英语


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【英文标准名称】:Titanium-RutheniumAlloys(Ti-0.1Ru),UNSR52404andUNSR52254SectionVIII,Division1
【原文标准名称】:钛钌合金(Ti-0.1Ru),UNSR52404和UNSR52254.第VIII节,第1部分
【标准号】:ASME2325-2001
【标准状态】:现行
【国别】:美国
【发布日期】:2001
【实施或试行日期】:
【发布单位】:美国机械工程师协会(US-ASME)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:Titanium-RutheniumAlloys(Ti-0.1Ru),UNSR52404andUNSR52254SectionVIII,Division1
【中国标准分类号】:H63
【国际标准分类号】:
【页数】:
【正文语种】:英语


【英文标准名称】:Steelbutt-weldingpipefittings
【原文标准名称】:钢制对焊管配件
【标准号】:JISB2312-2009
【标准状态】:现行
【国别】:日本
【发布日期】:2009-02-20
【实施或试行日期】:2009-02-20
【发布单位】:日本工业标准调查会(JP-JISC)
【起草单位】:TechnicalCommitteeonMachineElements
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:ThisStandardspecifiesthesteelandnickel-chromiumferro-alloyseamlesspipefit-tingstobefittedbybutt-welding,mainlytopressureservicepipings11,highpressureservicepipings,hightemperatureservicepipings,alloysteelpipings,stainlesssteelpipings,lowtemperatureservicepipingsandsteelpipesforfiredheaters(here-afterreferredtoas"pipefittings").Thespecialqualityspecification,apartoforallofwhichmaybedesignatedbytheagreementbetweenthepurchaserandthemanufacturer,isgivenin.Annex.J.A..a.ndtherequirementsofspecialpttingearespecifiedinAneexJB:TheshapesanddimensionsofspecialbevelendsaredescribedinAnnexJCforinformativereference.NOTE:TheInternationalStandardscorrespondingtothisStandardandthesym-bolofdegreeofcorrespondenceareasfollows.ISO3419:1981Non-alloyandalloysteelbutt-weldingfittingsISO5251:1981Stainlesssteelbutt-weldingfittings(Overallevaluation:MOD)Thesymbolswhichdenotethedegreeofcorrespondenceinthecon-tentsbetweenJISandthecorrespondingInternationalStandardsareIDT(identical),MOD(modified),andNEQ(notequivalent)accordingtoISO/IECGuide21.Notes1)PipingsusingthecarbonsteelpipesforpressureservicespecifiedinJISG3454.2)PipingsusingthecarbonsteelpipesforhighpressureservicespecifiedinJISG3455.3)Pipingsusingthecarbonsteelpipesforhightemperatureservicespeci-fiedinJISG3456.4)PipingsusingalloysteelpipesspecifiedinJISG3458.5)PipingsusingthestainlesssteelpipesspecifiedinJISG3459.6)PipingsusingthesteelpipesforlowtemperatureservicespecifiedinJISG3460.7)PipingsusingthesteelpipesforfiredheatersspecifiedinJISG3467.
【中国标准分类号】:J15
【国际标准分类号】:23_040_40
【页数】:52P;A4
【正文语种】:日语