【英文标准名称】:Acoustics-Measurementofsoundinsulationinbuildingsandofbuildingelementsusingsoundintensity-Laboratorymeasurementsatlowfrequencies
【原文标准名称】:声学.用声强进行建筑物和建筑构件的隔声测量.低频率实验室测量
【标准号】:BSENISO15186-3-2010
【标准状态】:现行
【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】:声学试验;声学;建筑物;组件;条件;建筑;定义(术语);实验室测试;低频;测量;测量技术;隔音;声强;结构构件
【英文主题词】:Acoustictesting;Acoustics;Buildings;Components;Conditions;Construction;Definitions;Laboratorytesting;Lowfrequencies;Measurement;Measuringtechniques;Soundinsulation;Soundintensity;Structuralmembers
【摘要】:ThispartofISO15186specifiesasoundintensitymethodtodeterminethesoundreductionindexandtheelementnormalizedleveldifferenceofbuildingelementsatlowfrequencies.ThismethodhassignificantlybetterreproducibilityinatypicaltestfacilitythanthoseofISO140-3,ISO140-10andISO15186-1.Theresultsaremoreindependentoftheroomdimensionsofthelaboratoryandclosertovaluesthatwouldbemeasuredbetweenroomsofvolumegreaterthan300m.ThispartofISO15186isapplicableinthefrequencyrange50Hzto160Hzbutismainlyintendedforthefrequencyrange50Hzto80Hz.NOTEForelementsfacedwiththick,porousabsorbers,therecommendedfrequencyrangeis50Hzto80Hz.ThemaindifferencesbetweenthemethodsofISO15186-1andISO15186-3arethatinISO15186-3a)thesoundpressurelevelofthesourceroomismeasuredclosetothesurfaceofthetestspecimen,andb)thesurfaceoppositethetestspecimeninthereceivingroomishighlyabsorbingandconvertstheroomacousticallyintoaductwithseveralpropagatingcross-modesabovethelowestcut-onfrequency.TheresultsfoundbythemethodofISO15186-3canbecombinedwiththoseofISO140-3andISO15186-1toproducedatainthefrequencyrange50Hzto5000Hz.
【中国标准分类号】:P31
【国际标准分类号】:91_120_20
【页数】:22P.;A4
【正文语种】:英语


【英文标准名称】:Limingmaterials-Determinationofcalciumcontent-Oxalatemethod.
【原文标准名称】:石灰浸物质.钙含量的测定.草酸盐法
【标准号】:NFU42-603-2002
【标准状态】:现行
【国别】:法国
【发布日期】:2002-06-01
【实施或试行日期】:2002-06-05
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Agriculture;Biology;Calcium;Calciumcontent;Determination;Determinationofcontent;Fertilizers;Magnesium;Oxalates;Plants;Samplingmethods;Soilimprovingmaterials;Soils;Testing
【摘要】:
【中国标准分类号】:B13
【国际标准分类号】:65_080
【页数】:10P;A4
【正文语种】:其他