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【英文标准名称】:Acoustics-Referencezeroforthecalibrationofaudiometricequipment-Part4:Referencelevelsfornarrow-bandmaskingnoise(ISO389-4:1994);GermanversionENISO389-4:1998
【原文标准名称】:声学.音响设备校正零点参考基准.第4部分:窄带遮敝噪声用参考声级
【标准号】:ENISO389-4-1998
【标准状态】:现行
【国别】:
【发布日期】:1999-07
【实施或试行日期】:1999-07-01
【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】:仿真耳;纯普听力图;校正;听力计;耳模拟器;听力测定;耦合器;空气传导助听器;参考级;定义;声压级;窄带;头戴送受话器;掩蔽噪声;声学;声耦合器
【英文主题词】:Acousticcouplers;Acousticequipment;Acoustictesting;Acoustics;Airconductionhearingaids;Airtubes;Artificialears;Audiometers;Audiometry;Auditorythreshold;Bandwidths;Calibration;Couplers;Datum;Definition;Definitions;Earsimulators;Earphones;Electricalengineering;Frequencies;Headphones;Impactsound;Maskingnoise;Measurement;Narrowband;Noisebandwidths;Noiselevel;Noisemeasurements;Pure-toneaudiometers;Referencelevels;Soundintensity;Soundpressurelevel
【摘要】:
【中国标准分类号】:N65
【国际标准分类号】:13_140
【页数】:12P.;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforHydrostaticPressureResistanceofaLiquid-AppliedWaterproofingMembrane
【原文标准名称】:使用液体的防水薄膜抗液体静压力的标准试验方法
【标准号】:ASTMC1306-2005a
【标准状态】:现行
【国别】:
【发布日期】:2005
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D08.22
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:试验;防水材料;液体静压力;实验室设备;薄膜材料;耐压性
【英文主题词】:hydrostatic;membrane;waterproofing
【摘要】:Thistestmethodisusedasascreeningtooltodeterminethehydrostaticpressuretowhichaliquid-appliedwaterproofingmembranemaybesubjectedwithoutfailingwhenstretchedoveracrackinthesubstrate.Thistestmethoddiscriminatesbetweenamembranethatisveryresistanttohydrostaticpressureandonethatisnot.Becauseofthevariabilityinherentinthistestmethod,itisnotrecommendedthatthistestmethodbeusedtosetanumericalstandardforhydrostaticpressureresistance.Nopredictionofdurabilityatlowerhydrostaticpressurescanbemadewhenusingtheresultsofthistestmethod.1.1Thistestmethoddescribesalaboratoryprocedurefordeterminingtheresistanceofawaterproofingmembranetohydrostaticpressure.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Theinch-poundunitsgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.4TherearenoISOstandardssimilarorequivalenttothisASTMstandard.
【中国标准分类号】:Q24
【国际标准分类号】:91_100_50;91_100_50;91_100_50
【页数】:3P.;A4
【正文语种】: