NF C32-201/A1-1987 补充1
作者:标准资料网 时间:2024-05-20 01:35:43 浏览:9932
来源:标准资料网
【英文标准名称】:
【原文标准名称】:补充1
【标准号】:NFC32-201/A1-1987
【标准状态】:作废
【国别】:法国
【发布日期】:1987-01
【实施或试行日期】:1986-12-05
【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】:耐化学性;化学反应;二氯甲烷;未增塑聚氯乙烯;胶凝;化学侵蚀;耐化学性试验;试样试样;设备;材料的机械性能;设备容纳设施;塑料;机械性能
【英文主题词】:
【摘要】:
【中国标准分类号】:K13
【国际标准分类号】:
【页数】:3P;A4
【正文语种】:其他
【英文标准名称】:StandardTestMethodforLaboratoryMeasurementofNoiseReductionofSound-IsolatingEnclosures
【原文标准名称】:隔音室减少噪音的实验室测量的标准试验方法
【标准号】:ASTME596-1996(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:1996
【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】:E33.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:enclosures;noiseisolation;noiseisolationclass;noisereduction;sound-isolating;Acousticaltests;Laboratorysoundtransmissiontesting;Partitions;Reverberationroommethod;Soundabsorbing/insulatingmaterials/applications;Soundtransmission
【摘要】:Thenoisereductionofanenclosureisapropertyoftheenclosure,thelocationofthesoundsourceusedtomeasurenoisereduction,andthespaceinwhichtheenclosureisplaced.Itisnotapropertyoftheenclosurealone,anditsmeasurementunderdifferentconditionscanbeexpectedtogivedifferentresults.Whenthenoisereductionismeasuredinaccordancewiththistestmethod,thesoundsourceisoutsidetheenclosureandthesoundfieldoutsidetheenclosureapproximatesadiffusesoundfield.Measurementsmadeinaccordancewiththistestmethodcanbeexpectedtobereproduciblefromonelaboratorytoanother.Thenoisereductionmeasuredinaccordancewiththistestmethodmaybeusedforthefollowingpurposes:Toranktheorderofsound-isolatingenclosuresaccordingtonoiseisolationclass,NIC.Toestimatethehighestone-thirdoctavebandsoundpressurelevelsthatcanoccuroutsidetheenclosurewithoutexceedingspecifiedsoundpressurelevelsinsidetheenclosure.Toestimatetheone-thirdoctavebandsoundpressurelevelsthatwilloccurinsidetheenclosurewithspecifiedsoundpressurelevelsoutside.Thenoisereductionmeasuredinaccordancewiththistestmethodmaynotestimateaccuratelytheisolationthattheenclosurewillprovidewhenitisusedtoisolateanoisesourceinsideitfromthespaceoutside.Theusershouldbecautiouswhenusingnoisereductionsmeasuredbythistestmethodtoevaluateenclosuresusedtoenclosenoisesources.Sound-isolatingenclosuresarefrequentlymadefromprefabricatedmodularpanels.Thenoisereductionmeasuredbythistestmethodappliestothecompleteenclosureandnottoindividualpanelsfromwhichitismadeandcannotbeusedtoinferthesoundtransmissionlossoftheindividualpanels.Specificationsforsound-isolatingenclosuresmayincludereferencetonoisereductionandnoiseisolationclassmeasuredinaccordancewiththistestmethod.1.1Thistestmethodcoversthereverberationroommeasurementofthenoisereductionofsound-isolatingenclosures.1.2Thenoiseisolationclassmaybedeterminedfromthenoisereductionmeasuredinaccordancewiththistestmethod.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P31
【国际标准分类号】:71_040_20
【页数】:5P.;A4
【正文语种】:英语
基本信息
标准名称: | 铁路旅客列车广播员乘务作业标准 |
中标分类: |
铁路 >>
铁路车辆 >>
铁路客车 |
替代情况: | 被TB/T 2967.1-2002代替 被TB/T 2967.2-2002代替 |
发布日期: | 1991-06-11 |
实施日期: | 1991-12-01 |
首发日期: | |
作废日期: | |
出版日期: | |
页数: | 4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: 铁路 铁路车辆 铁路客车