【英文标准名称】:StandardGuideforUsingtheFrequencyDomainElectromagneticMethodforSubsurfaceInvestigations
【原文标准名称】:地下勘察用频域电磁法使用的标准指南
【标准号】:ASTMD6639-2001(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:2001
【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】:D18.01
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:electromagnetics;frequencydomainelectromagnetics;geophysics;groundconductivity;surfacegeophysics;Electromagnetictesting;Environmentalsiteassessment(ESA);Frequencydomainelectromagneticmethod;Subsurfaceinvestigation--soil/rock
【摘要】:Concepts:Thisguidesummarizestheequipment,fieldproceduresandinterpretationmethodsusedforthecharacterizationofsubsurfacematerialsandgeologicalstructureasbasedontheirpropertiestoconduct,enhanceorobstructtheflowofelectricalcurrentsasinducedinthegroundbyanalternatingelectromagneticfield.Thefrequencydomainmethodrequiresatransmitterorenergysource,atransmittercoil,receiverelectronics,areceivercoil,andinterconnectcables(Fig.5).Thetransmittercoil,whenplacedonorneartheearth''ssurfaceandenergizedwithanalternatingcurrent,inducessmallcurrentsinthenearearthmaterialproportionaltotheconductivityofthematerial.Theseinducedalternatingcurrentsgenerateasecondarymagneticfield(Hs),whichissensedwiththeprimaryfield(Hp)bythereceivercoil.Underaconstraintknownasthex201C;lowinductionnumberapproximationx201D;(McNeill,1980)andwhenthesubsurfaceisnonmagnetic,thesecondarymagneticfieldisfullyout-of-phasewiththeprimaryfieldandisgivenbyafunctionofthesevariables.where:x03C3;a

【中国标准分类号】:P13
【国际标准分类号】:07_060
【页数】:14P.;A4
【正文语种】:英语


【英文标准名称】:Petroleumproducts-Determinationofknockcharacteristicsofmotorandaviationfuels-Motormethod(ISO5163:2005);EnglishversionofDINENISO5163:2006
【原文标准名称】:石油产品.发动机和航空燃料的爆震特性测定.马达法
【标准号】:DINENISO5163-2006
【标准状态】:现行
【国别】:德国
【发布日期】:2006-01
【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】:飞行器;抗爆率;汽车;机动车燃料;航空燃料;定义;测定;燃料;汽油;材料试验;测量;电动机;辛烷值;石油产品;物理化学法;试验
【英文主题词】:Aircrafts;Antiknockratings;Automobiles;Automotivefuels;Aviationfuels;Definition;Definitions;Determination;Fuels;Gasoline;Materialstesting;Measurement;Motors;Octanenumber;Petroleumproducts;Physico-chemicalmethods;Testing;Tests
【摘要】:ThisInternationalStandardestablishestheratingofliquidspark-ignitionenginefuelintermsofanarbitraryscaleofoctanenumbersusingastandardsingle-cylinder,four-strokecycle,variable-compressionratio,carburetted,CFRengineoperatedatconstantspeed.Motoroctanenumber(MON)providesameasureoftheknockcharacteristicsofmotorfuelsinautomotiveenginesundersevereconditionsofoperation.Themotoroctanenumberprovidesameasureoftheknockcharacteristicsofaviationfuelsinaviationpistonengines,byusinganequationtocorrelatetoaviation-methodoctanenumberorperformancenumber(lean-mixtureaviationrating).ThisInternationalStandardisapplicablefortheentirescalerangefrom0MONto120MON,buttheworkingrangeis40MONto120MON.Typicalmotorfueltestingisintherangeof80MONto90MON.Typicalaviationfueltestingisintherangeof98MONto102MON.ThisInternationalStandardcanbeusedforoxygenate-containingfuelscontainingupto4,0%(m/m)oxygen.Certaingasesandfumes,suchashalogenatedrefrigerantsusedinair-conditioningequipmentthatcanbepresentintheareawheretheCFRengineislocated,mayhaveameasurableeffectontheMONrating.ElectricalpowertransientvoltageorfrequencysurgesordistortioncanaffectMONratings.NOTEIThisInternationalStandardspecifiesoperatingconditionsinSIunitsbutenginemeasurementsarespecifiedininch-poundunitsbecausethesearetheunitsusedinthemanufactureoftheequipment,andthussomereferencesinthisInternationalStandardincludetheseunitsinparenthesis.NOTE2ForthepurposesofthisInternationalStandard,theexpressions"%(m/m)"and"%(V/V)"areusedtorepresentthemassandvolumefractionsofamaterial,respectively.
【中国标准分类号】:E31
【国际标准分类号】:75_160_20
【页数】:25P.;A4
【正文语种】:英语