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DIN EN ISO 3744-2009 声学.声压法测定噪声源的声功率级.反射面上近似自由场的工程法(ISO3744:1994),ENISO3744:2009的德文版本

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【英文标准名称】:Acoustics-Determinationofsoundpowerlevelsofnoisesourcesusingsoundpressure-Engineeringmethodinanessentiallyfreefieldoverareflectingplane(ISO3744:1994);EnglishversionofDINENISO3744:2009-11
【原文标准名称】:声学.声压法测定噪声源的声功率级.反射面上近似自由场的工程法(ISO3744:1994),ENISO3744:2009的德文版本
【标准号】:DINENISO3744-2009
【标准状态】:作废
【国别】:德国
【发布日期】:2009-11
【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】:Absorption;Acousticmeasurement;Acoustictesting;Acoustics;Calibration;Clay;Definitions;Determination;Earprotectors;Envelopingsurfacemethods;Environment;Externalnoise;Fixings;Installations;Mathematicalcalculations;Measurement;Measurementduration;Measuringinstruments;Measuringsurfaces;Measuringtechniques;Methods;Methodsofcalculation;Microphones;Noise;Noise(environmental);Noisemeasurements;Noisesources;Operation;Precision;Reflective;Rooms;Soundabsorption;Soundfields;Soundintensity;Soundlevel;Soundlevels;Soundpower;Soundpressure;Soundsources;Specification(approval);Standarddeviation;Testequipment;Testing;Testingconditions
【摘要】:1.1GeneralThisInternationalStandardspecifiesamethodformeasuringthesoundpressurelevelsonameasure-mentsurfaceenvelopinganoisesource,underes-sentiallyfree-fieldconditionsnearoneormorereflectingplanes,inordertocalculatethesoundpowerlevelproducedbythenoisesource.Itgivesrequirementsforthetestenvironmentandinstru-mentation,aswellastechniquesforobtainingthesurfacesoundpressurelevelfromwhichthesoundpowerlevelofthesourceiscalculated,leadingtore-sultswhichhaveagrade2accuracy.Itisimportantthatspecificnoisetestcodesforvari-oustypesofequipmentbeestablishedandusedinaccordancewiththisInternationalStandard.Foreachtypeofequipment,suchnoisetestcodeswillgivedetailedrequirementsonmounting,loadingandop-eratingconditionsfortheequipmentundertestaswellasaselectionofthemeasurementsurfaceandthemicrophonearrayasspecifiedinthisInternationalStandard.NOTE1Thenoisetestcodeforaparticulartypeofequipmentshouldgivedetailedinformationontheparticularsurfacethatisselected,astheuseofdifferentlyshapedmeasurementsurfacesmayyielddifferingestimatesofthesoundpowerlevelofasource.1.2TypesofnoiseandnoisesourcesThemethodspecifiedinthisInternationalStandardissuitableformeasurementsofalltypesofnoise.NOTE2Aclassificationofdifferenttypesofnoise(steady,non-steady,quasi-steady,impulsive,etc.)isgiveninISQ2204.ThisInternationalStandardisapplicabletonoisesourcesofanytypeandsize{e.g.device,machine,component,sub-assembly).NOTE3MeasurementsaccordingtothisInternationalStandardmaybeimpracticableforverytallorverylongsourcessuchaschimneys,ducts,conveyorsandmulti-sourceindustrialplants.1.3TestenvironmentThetestenvironmentthatisapplicableformeasure-mentsmadeinaccordancewiththisInternationalStandardisanessentiallyfreefieldnearoneormorereflectingplanes(indoorsoroutdoors).
【中国标准分类号】:
【国际标准分类号】:17_140_01
【页数】:42P.;A4
【正文语种】:英语


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【英文标准名称】:Shipsandmarinetechnology-Looseflangesandlappedpipeendsextralightduty-Part3:LappedpipeendsforbutweldingDN32toDN125
【原文标准名称】:船舶与海上技术.活动法兰和和超轻型搭接管端.第3部分:只用于焊接DN32-DN125的搭接管端
【标准号】:DIN86038-3-2000
【标准状态】:现行
【国别】:德国
【发布日期】:2000-03
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:航空类型;设计;焊接;额定值;海军;额定压力;管道;尺寸;法兰边缘;搭接法兰;法兰;船用管道系统;造船
【英文主题词】:shipbuilding;ratedpressure;dimensions;aviationtype;flangeedges;flanges;navy;marinepipeworksystems;design;lappedflanges;ratings;welding;pipelines
【摘要】:ThedocumentspecifieslappedpipeendsforbutweldingforpipeconnectiontogetherwithlooseflangesaccordingtoDIN86038-2foruseonlightandfastships.
【中国标准分类号】:U55
【国际标准分类号】:23_040_60;47_020_30
【页数】:3P;A4
【正文语种】:德语


【英文标准名称】:StandardforSafetyforTestsforFlammabilityofSmallPolymericComponentMaterials
【原文标准名称】:小型聚合基元件材料易燃性试验的安全标准
【标准号】:ANSI/UL1694-2004
【标准状态】:作废
【国别】:美国
【发布日期】:2004
【实施或试行日期】:
【发布单位】:美国国家标准学会(ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:防火安全;阻燃性;塑料;材料;元部件;试验;规范(验收);高聚物;易燃性;耐火性;聚合材料
【英文主题词】:polymers;specification(approval);flammability;firesafety;materials;fireresistance;testing;components;flameresistance;plastics;polymericmaterials
【摘要】:
【中国标准分类号】:C80
【国际标准分类号】:83_080_01
【页数】:
【正文语种】:英语