DIN 40839-4-1992 汽车电磁兼容性(EMA).辐射干拢量
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【英文标准名称】:ElectromagneticCompatibility(EMC)inroadvehicles;radiateddisturbances
【原文标准名称】:汽车电磁兼容性(EMA).辐射干拢量
【标准号】:DIN40839-4-1992
【标准状态】:作废
【国别】:德国
【发布日期】:1992-10
【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】:磁电效应;影响量;电磁的;实验室试验;电磁场;试验;测量;电磁兼容性;电磁兼容性;极限(数学);兼容性;运载工具;电气工程;摩托车;规范(批准);实验室;定义;干扰抑制;道路车辆
【英文主题词】:
【摘要】:
【中国标准分类号】:L06;T36
【国际标准分类号】:29_020
【页数】:20P;A4
【正文语种】:德语
【英文标准名称】:Cyclotronsystemsforpositronemissiontomography-Part2:Radiationprotectionlabyrinthsandwallentrances
【原文标准名称】:正电子放射层析X射线摄影法用回旋加速器系统.第2部分:辐射防护迷宫式密封体和护墙入口
【标准号】:DIN6871-2-2005
【标准状态】:现行
【国别】:德国
【发布日期】:2005-02
【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】:辐射防护;剂量率;入口;核医学;中子;电气工程;防护区;辐射学;计算机断层摄影;穿墙套管;可控区;放射性防护区;X射线设备;结构工程;中子射线;定义;X射线断层摄影术;医疗技术学;极限(数学);医疗设备;防护屏蔽;放射疗法;剂
【英文主题词】:
【摘要】:
【中国标准分类号】:C43
【国际标准分类号】:13_280;11_040_50
【页数】:14P;A4
【正文语种】:德语
【英文标准名称】:StandardTestMethodforLaboratoryDeterminationofCreepPropertiesofFrozenSoilSamplesbyUniaxialCompression
【原文标准名称】:单轴压缩法实验室测定冻结土壤样品蠕变性能的标准试验方法
【标准号】:ASTMD5520-1994(2006)e1
【标准状态】:现行
【国别】:
【发布日期】:1994
【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】:D18.19
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:实验室;土壤;拉伸试验;使用;应力;蠕变性能;实验室试验;温度试验;变形;单轴压缩;冻结土壤;单轴压缩;冻结土壤样品;石头;粗石材料;压缩试验;蠕变;相关材料
【英文主题词】:creep;deformation;frozensoil;strain;stress;temperature;uniaxialcompression
【摘要】:Understandingthemechanicalpropertiesoffrozensoilsisofprimaryimportancetopermafrostengineering.Datafromcreeptestsarenecessaryforthedesignofmostfoundationelementsembeddedin,orbearingonfrozenground.Theymakeitpossibletopredictthetime-dependentsettlementsofpilesandshallowfoundationsunderserviceloads,andtoestimatetheirshort-andlong-termbearingcapacity.Creeptestsalsoprovidequantitativeparametersforthestabilityanalysisofundergroundstructuresthatarecreatedforpermanentuse.Itmustberecognizedthatthestructureoffrozensoilinsituanditsbehaviorunderloadmaydiffersignificantlyfromthatofanartificiallypreparedspecimeninthelaboratory.Thisismainlyduetothefactthatnaturalpermafrostgroundmaycontainiceinmanydifferentformsandsizes,inadditiontotheporeicecontainedinasmalllaboratoryspecimen.Theselargeground-iceinclusions(suchasicelenses)willconsiderablyaffectthetime-dependentbehavioroffull-scaleengineeringstructures.Inordertoobtainreliableresults,high-qualityundisturbedrepresentativepermafrostsamplesarerequiredforcreeptests.Thequalityofthesampledependsonthetypeoffrozensoilsampled,theinsituthermalconditionatthetimeofsampling,thesamplingmethod,andthetransportationandstorageprocedurespriortotesting.Thebesttestingprogramcanberuinedbypoor-qualitysamples.Inaddition,onemustalwayskeepinmindthattheapplicationoflaboratoryresultstopracticalproblemsrequiresmuchcautionandengineeringjudgment.1.1Thistestmethodcoversthedeterminationofthecreepbehaviorofcylindricalspecimensoffrozensoil,subjectedtouniaxialcompression.Itspecifiestheapparatus,instrumentation,andproceduresfordeterminingthestress-strain-time,orstrengthversusstrainraterelationshipsforfrozensoilsunderdeviatoriccreepconditions.1.2Althoughthistestmethodisonethatismostcommonlyused,itisrecognizedthatcreeppropertiesoffrozensoilrelatedtocertainspecificapplications,canalsobeobtainedbysomealternativeprocedures,suchasstress-relaxationtests,simplesheartests,andbeamflexuretests.Creeptestingundertriaxialtestconditionswillbecoveredinanotherstandard.1.3ValuesstatedinSIunitsaretoberegardedasthestandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P13
【国际标准分类号】:13_080_40
【页数】:8P.;A4
【正文语种】:
