DIN 16554 Bb.1-1958 圆珠笔笔芯.笔芯.尺寸
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来源:标准资料网
【英文标准名称】:Ballpointpenrefills;dimensions
【原文标准名称】:圆珠笔笔芯.笔芯.尺寸
【标准号】:DIN16554Bb.1-1958
【标准状态】:作废
【国别】:
【发布日期】:
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:
【国际标准分类号】:
【页数】:
【正文语种】:
【英文标准名称】:StandardTestMethodforDeterminationofDecayRatesforUseinSoundInsulationTestMethods
【原文标准名称】:隔声试验方法中衰减率测定的标准试验方法
【标准号】:ASTME2235-2004e1
【标准状态】:现行
【国别】:
【发布日期】:2004
【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】:E33.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:隔音;衰减;试验;测定
【英文主题词】:decayrate;normalizationofsoundpressurelevel;reverberationtime;roomsoundabsorption
【摘要】:SeveralASTMtestmethodstoevaluatethesound-insulatingpropertiesofbuildingelementsrequirethemeasurementofroomsoundabsorptionaspartoftheprocedure.Theroomsoundabsorptioninthesestandardsappearsinanequationintheform10log(x/A),wherexisaquantitywiththesameunitsasA,m2.RoomsoundabsorptioniscalculatedfromthedecayrateusingEq1.Therequirementsofthisstandardhavebeenchosensotheuncertaintyassociatedwiththemeasurementofroomsoundabsorptionwillbeacceptablysmallsolongasthelogarithmoftheabsorptionisbeingusedincalculations.Othertestmethodsshouldspecifyexplicitlythattheymakeuseofthistestmethod.Wheremeasurementrequirementsintheparentstandarddifferfromthosegivenhere,therequirementsintheparentstandardshallbesatisfied.Thistestmethodshallnotbeusedwhenroomsoundabsorptionordecayrateistobeuseddirectlytosatisfysomecriterion,forexampleinaroomthatmustnotbeoverlyreverberantsospeechwillbeintelligible.Note18212;Theuncertaintyoftheroomsoundabsorptionobtainedwillusuallybetoohighandadditionalmeasurementsarenecessary.Anycompanionstandardmayspecifytheuseoftheproceduresinthismethodfordeterminingwhetherthedecayratesinaroomareslowenoughtosatisfytherequirementsofthecompanionstandard.Themeasureddecayratesshallstillbeusedonlytocalculatethelogarithmoftheroomabsorption.1.1Thistestmethodcoversthemeasurementofsounddecayrateinroomsandthecalculationofthesoundabsorptionoftheroomanditscontents.Thesoundabsorptionsocalculatedmaybeusedincalculationsinsoundinsulationtestmethods.1.2Themethodshallbeusedonlyinconjunctionwithothertestmethodswherethelogarithmofthesoundabsorptionisusedinformulas.Itisnotsufficientlypreciseforuseinsituationswhereroomsoundabsorptionistobeusedwithouttakinglogarithms.1.3Forlaboratorymeasurementsofthesoundabsorptionofmaterialsandobjects,TestMethodC423shouldbeused.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z32
【国际标准分类号】:91_120_20
【页数】:4P.;A4
【正文语种】:
【英文标准名称】:Ceramicfloorandwalltiles.Methodfordeterminationoflinearthermalexpansion
【原文标准名称】:地面瓷砖和墙面瓷砖.第15部分:线性热膨胀的测定方法
【标准号】:BS6431-15-1983
【标准状态】:作废
【国别】:英国
【发布日期】:1983-12-30
【实施或试行日期】:1983-12-30
【发布单位】:英国标准学会(BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:热测量;墙面饰层;铺地砖;墙面贴砖;面砖;热膨胀;陶瓷;地板覆盖物
【英文主题词】:thermalmeasurement;wallcoverings;flooringtiles;thermalexpansion;walltiles;tiles;floorcoverings;ceramics
【摘要】:
【中国标准分类号】:Q31
【国际标准分类号】:91_100_25
【页数】:8P;A4
【正文语种】:英语
