DIN EN 300392-7-2001 地面主干线广播.语音加数据.第7部分:安全性(英文版本核准本EN300392-7V2.1.1(2001-02)作为德国标准)
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【英文标准名称】:TerrestrialTrunkedRadio(TETRA)-VoiceplusData(V+D)-Part7:Security(EndorsementoftheEnglishversionEN300392-7V2.1.1(2001-02)asGermanStandard)
【原文标准名称】:地面主干线广播.语音加数据.第7部分:安全性(英文版本核准本EN300392-7V2.1.1(2001-02)作为德国标准)
【标准号】:DINEN300392-7-2001
【标准状态】:作废
【国别】:德国
【发布日期】:2001-07
【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】:无线电装置;界面;数据传送;陆地长途无线电;跨越欧洲长途无线电;补充业务;无线电广播网;语音传输;电信;电信;移动无线电通信系统;安全;无线电设备;通信;远程通信;无线通信业务;定义;定义
【英文主题词】:
【摘要】:
【中国标准分类号】:M36
【国际标准分类号】:33_070_10
【页数】:1P;A4
【正文语种】:德语
【英文标准名称】:StandardTestMethodforDeterminationofIsothermalSecantandTangentBulkModulus
【原文标准名称】:测定等温正割和正切体积弹性模量的标准试验方法
【标准号】:ASTMD6793-2002(2007)
【标准状态】:现行
【国别】:
【发布日期】:2002
【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】:D02.11
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:density;dynamicbulkmodulus;isentropicbulkmodulus;isothermalbulkmodulus;isothermalsecantbulkmodulus;isothermaltangentbulkmodulus;pressure;staticbulkmodulus
【摘要】:Isothermalsecantbulkmodulus(staticbulkmodulus)isapropertythatmeasuresthecompressibilityofaliquid.Thegreaterthevalue,thelessthecompressibilityoftheliquid.Isothermalsecantbulkmodulusisemployedinthedesignofhighperformancehydraulicfluidandbrakingsystems.Highbulkmodulusisdesirableinthattheresponsetimeofasystemisfasterwhenappliedpressuremoredirectlyeffectstheactionofthesystemratherthaninthecompressionoftheworkingliquid.Ifisothermalsecantbulkmodulusisknownasafunctionofpressure,thedatamaybeusedtocalculateisothermaltangentbulkmodulusanddensityasafunctionofpressure.Thedatamaynot,however,beusedtodetermineisentropic(dynamic)bulkmodulus.ThatpropertyisusuallydeterminedfromvelocityofsoundmeasurementsanddiffersfromisothermalbulkmodulusbytheratioofCp/Cv=x03B3;(theratioofheatcapacityatconstantpressuretothatatconstantvolumeforthetestspecimen.1.1Thistestmethodcoversthedeterminationofisothermalsecantandtangentbulkmodulusofliquidswhicharestableandcompatiblewithstainlesssteelundertheconditionsoftest.1.2Thistestmethodisdesignedtobeusedoverthetemperaturerangefrom-40to200176;Candfromambientto68.95Mpa(10000psig).Note1Becauseofthedesignofthetestapparatus,theupperlimitofpressurewhichcanbeattainedislimitedbythebulkmodulusofthetestfluid.Pressuresashighas68.95Mpawillnotbeattainedforfluidsofrelativelylowbulkmodulusatthetesttemperature.1.3Thistestmethodassumesthattheuserisproficientintheassemblyanduseofmediumpressure(m/p)threadedandconedfittingswhichareintendedforuseatpressuresupto137.9Mpa(20000psig).Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note2Becausehydraulicpressureinthetestsystemisproducedbypurelymechanicalmeans,thetestmethodisnotsubjecttothehazardsassociatedwithsystemswhicharepressurizedpneumatically.Evensmallleakswillresultinimmediatedropinpressuretoambientwithoutproductionofahighpressureliquidstreamormist.
【中国标准分类号】:A42
【国际标准分类号】:75_160_20
【页数】:5P.;A4
【正文语种】:
MIL-E-50011C (NOTICE 1), MILITARY SPECIFICATION: ETHANOLAMINES (MONOETHANOLAMINE, DIETHANOLAMINE, AND TRIETHANOLAMINE), TECHNICAL (01 OCT 1998) [S/S BY A-A-59231]., Mil-E-50011C, dated 23 June 1994, is hereby canceled. Future acquisition of this material should refer to Commercial Item Description A-A-59231.(Application for copies of commercial item descriptions should be addressed to the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia PA.
