基本信息
标准名称: | 电子器件详细规范 3DD201型低频放大管壳额定双极型晶体管(可供认证用) |
中标分类: |
电子元器件与信息技术 >>
半导体分立器件 >>
半导体三极管 |
替代情况: | 调整为SJ/T 10886-1996 |
发布日期: | 1900-01-01 |
实施日期: | 1987-11-01 |
首发日期: | 1900-01-01 |
作废日期: | 1900-01-01 |
出版日期: | 1900-01-01 |
页数: | 10页 |
适用范围
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前言
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引用标准
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所属分类: 电子元器件与信息技术 半导体分立器件 半导体三极管
【英文标准名称】:StandardTestMethodforMeasurementofSoundinResidentialSpaces
【原文标准名称】:居住空间声测量的标准试验方法
【标准号】:ASTME1574-1998(2006)
【标准状态】:现行
【国别】:
【发布日期】:1998
【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】:E33.08
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:声传输;建筑内部的声级;内部声级;测量过程;噪声级测量;住宅噪声;声测量;居住空间;空格;试验
【英文主题词】:noise;residentialnoise;residentialspace;sound
【摘要】:Thisisaninsitumethod,thatis,themeasurementsaremadeattheactualinstallation.Thesoundlevelsmeasuredaccordingtothistestmethodshouldberepresentativeforthatinstallationandforthequantityofacousticalabsorptionactually,permanentlypresent.Thetestmethodhasthefollowinglimitations:5.2.1Thetestmethodproducessounddatawhichmaybecomparedwithapplicablecriteriaorlimitsonlyiftheyareintermsofthequantitiesmeasuredinthistestmethod.5.2.2Thetestmethoddoesnotquantifycertainsubjectiveaspectsofthesoundenvironmentthatmaybeobjectionable.Theseincludepuretones,spectralcontent,andtemporaldistribution.1.1Thistestmethodprovidesguidancetothemethodologyusedinthemeasurementofbuildinginteriorsoundlevels.1.2Thistestmethoddescribesproceduresformeasuringsoundinenclosedresidentialspacesproducedbybuilt-inutilitiesandmajorappliancessuchasplumbing,heating,ventilating,air-conditioningsystems,refrigerators,anddishwashers.Themeasuredvaluesmaythenbeusedtoassesscompliance,design,orhabitationsuitability.1.3Thistestmethoddoesnotpromulgateorrecommendacousticalcriteria.1.4Thistestmethodisnotintendedforobtainingdatatoevaluateindoorenvironmentsfor:1.4.1Commercialactivitiessuchasstudios,communicationcenters,hospitals,andauditoria,and1.4.2Effectsfromexteriorsourcessuchasaircraft,railroadoperations,motorvehicles,miningoperation,weaponsfire,etc.1.5Thistestmethodisnotintendedforevaluatingsoundtransmissionloss,soundabsorptioncoefficient,oranyotheracousticalaspectsofthespaceorstructure.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P31
【国际标准分类号】:91_120_20
【页数】:4P.;A4
【正文语种】: