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DIN EN 2591-315-1998 航空航天系列.电气和光学仪器连接元件.试验方法.第315部分:流体阻力试验

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【英文标准名称】:Aerospaceseries-Elementsofelectricalandopticalconnection;testmethods-Part315:Fluidresistance;GermanversionEN2591-315:1998
【原文标准名称】:航空航天系列.电气和光学仪器连接元件.试验方法.第315部分:流体阻力试验
【标准号】:DINEN2591-315-1998
【标准状态】:现行
【国别】:德国
【发布日期】:1998-08
【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】:多语种的;液体;飞行器部件;灭火材料;德语;电的;电力设备;空气温度;解冻剂;电流;试验;设备;航天运输;试验持续时间;航空航天运输;电气元件;英语;试验条件;测量;脂肪;紧固件;液压液;润滑脂;电连接器;航空运输;机动车燃料;清洗材料
【英文主题词】:Aerospacetransport;Airtemperatures;Airtransport;Aircraftcomponents;Automotivefuels;Cleaningmaterials;Coolingliquids;De-icers;Electricconnectors;Electriccurrent;Electrical;Electricalcomponents;Electricalinstallations;Englishlanguage;Equipment;Fasteners;Fats;Fireextinguishingmaterials;Germanlanguage;Greases;Hydraulicfluids;Liquids;Measurement;Moistureresistance;Multilingual;Opticalelements;Resistance;Spacetransport;Testduration;Testing;Testingconditions
【摘要】:Thedocumentspecifiesamethodofcheckingtheresistanceofelementsofconnectiontofluids.ItshallbeusedtogetherwithDINEN2591.
【中国标准分类号】:V20
【国际标准分类号】:49_060
【页数】:8P.;A4
【正文语种】:德语


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【英文标准名称】:Acoustics-Statisticaldistributionofhearingthresholdsasafunctionofage
【原文标准名称】:声学.听阈与年龄的关系的统计分布
【标准号】:BSENISO7029-2000
【标准状态】:现行
【国别】:英国
【发布日期】:2000-08-15
【实施或试行日期】:2000-08-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:声学;听觉阈;衰老;龄期;声学测量;统计分布;频率;音频;听力测定;中位数;听觉
【英文主题词】:Acoustics;Age;Audibility;Audiometry;Auditorythreshold;Definition;Definitions;Determination;Mathematicalcalculations;People;Statisticaldata;Statisticaldistribution;Statistics
【摘要】:ThisInternationalStandardprovidesdescriptivestatisticsofthehearingthresholdforpopulationsofvariousages.Itspecifiesthefollowing,fortherangeofaudiometricfrequenciesfrom125Hzto8000Hzandforpopulationsofotologicallynormalpersonsofagivenagewithintheagelimitsof18yearsto70yearsinclusive:a)theexpectedmedianvalueofhearingthresholdsgivenrelativetothemedianhearingthresholdattheageof18years;b)theexpectedstatisticaldistributionaboveandbelowthemedianvalue.Thedataareapplicableforestimatingtheamountofhearinglosscausedbyaspecificagentinapopulation.Suchacomparisonisvalidifthepopulationunderstudyconsistsofpersonswhoareotologicallynormalexceptfortheeffectofthespecificagent.NoiseexposureisanexampleofaspecificagentandforthisapplicationselecteddatafromthisInternationalStandardarereferredtoas"DataBaseA"inISO1999.Thedatamayalsobeusedtoassessanindividual'shearinginrelationtothedistributionofhearingthresholdswhichisnormalfortheperson'sagegroup.However,itisnotpossibletodetermineforanindividualpreciselywhichpartofanobservedhearinglossisattributabletoanaccumulationofdetrimentaleffectsonthehearingwhichincreasewithage,andwhichparthasbeencausedbyotherfactorssuchasnoise.Thehearingthresholddeviationasdefinedhereinandthehearingthresholdlevelasdefinedinotherstandards(ISO389-1,ISO8253-1,ISO8253-2,IEC60645-1)expressthehearingthresholdofanindividualoranindividualearrelativeto,respectively,a)themedianhearingthresholdofapopulationof18-year-oldpersons,orb)areferencezerolevelspecifiedinvariouspartsofISO389.Totheextentthatthereferencezerolevelrepresentsthemedianofthe18-year-oldpopulation,thevaluesofthetwotermswillbethesame.
【中国标准分类号】:A42
【国际标准分类号】:17_140_99
【页数】:18P;A4
【正文语种】:英语


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