DIN 24147 T.7-1982 通风技术设备.异型件.90°三通异径件、90°四通管件.对称性
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【英文标准名称】:Ventilationequipment;shapedpieces;distribution(T-)pieces90,crosspieces90;symmetrical
【原文标准名称】:通风技术设备.异型件.90°三通异径件、90°四通管件.对称性
【标准号】:DIN24147T.7-1982
【标准状态】:作废
【国别】:
【发布日期】:
【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】:
【摘要】:
【中国标准分类号】:
【国际标准分类号】:
【页数】:
【正文语种】:
【原文标准名称】:通风技术设备.异型件.90°三通异径件、90°四通管件.对称性
【标准号】:DIN24147T.7-1982
【标准状态】:作废
【国别】:
【发布日期】:
【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】:
【摘要】:
【中国标准分类号】:
【国际标准分类号】:
【页数】:
【正文语种】:
下载地址: 点击此处下载
【英文标准名称】:Measurementofexposuretoradio-frequencyelectromagneticfields-Fieldstrengthinthefrequencyrange100kHzto1GHz(IEC61566:1997);GermanversionEN61566:1997
【原文标准名称】:曝光于射频电磁场场强的测量.频率范围在100kHz和1GHz间的场强
【标准号】:EN61566-1997
【标准状态】:现行
【国别】:
【发布日期】:1999-01
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:高频;电磁的;电磁场;频率;电磁试验;曝光;安全措施;辐射危害;负荷;测量仪器;频率范围;危害;极限(数学);工作场所安全;规范(验收);发射机;无线电发射机;测量技术;天线;电磁学;定义;测量;电气工程;无线电设备;职业安全;辐射;场强(电)
【英文主题词】:Antennas;Definition;Definitions;Electricalengineering;Electromagnetic;Electromagneticfields;Electromagnetictests;Electromagnetism;Exposure;Fieldstrength(electric);Frequencies;Frequencyranges;Hazards;Highfrequencies;High-frequencymeasurement;Limits(mathematics);Loading;Measurement;Measuringinstruments;Measuringtechniques;Occupationalsafety;Radiation;Radiationhazards;Radioequipment;Radiotransmitters;Safetymeasures;Specification(approval);Transmitters;Workplacesafety
【摘要】:
【中国标准分类号】:K04
【国际标准分类号】:33_100_10
【页数】:16P.;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodsforDeterminingDispersiveCharacteristicsofClayeySoilsbytheCrumbTest
【原文标准名称】:用团粒试验测定粘性土的色散特性的标准试验方法
【标准号】:ASTMD6572-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:D18.06
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:测定;土壤;试验方法;试验
【英文主题词】:clay(dispersive);colloidalerodability;crumbtestmethod;dispersibility;dispersion;dispersiveclays;erosion
【摘要】:Thecrumbtestmethodprovidesasimple,quickmethodforfieldorlaboratoryidentificationofadispersiveclaysoil.Theinternalerosionfailuresofanumberofhomogeneousearthdams,erosionalongchannelorcanalbanks,andrainfallerosionofearthenstructureshavebeenattributedtocolloidalerosionalongcracksorotherflowchannelsformedinmassesofdispersiveclay(5).Thecrumbtestmethod,asoriginallydevelopedbyEmerson(6),wascalledtheaggregatecoherencetestandhadsevendifferentcategoriesofsoil-waterreactions.Sherard(5)latersimplifiedthetestbycombiningsomesoil-waterreactionssothatonlyfourcategories,orgrades,ofsoildispersionareobservedduringthetest.Thecrumbtestisarelativelyaccuratepositiveindicatorofthepresenceofdispersivepropertiesinasoil.Thecrumbtest,however,isnotacompletelyreliablenegativeindicatorthatsoilsarenotdispersive.Thecrumbtest,canseldomberelieduponasasoletestmethodfordeterminingthepresenceofdispersiveclays.Thedouble-hydrometertest(TestMethodD4221)andpinholetest(TestMethodD4647)aretestmethodsthatprovidevaluableadditionalinsightintotheprobabledispersivebehaviorofclaysoils.Note28212;Thequalityoftheresultproducedbythesetestmethodsisdependentonthecompetenceofthepersonnelperformingit,andthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting.UsersofthesetestmethodsarecautionedthatcompliancewithPracticeD3740doesnotinitselfensurereliabletesting.Reliabletestingdependsonseveralfactors;PracticeD3740providesameansofevaluatingsomeofthosefactors.1.1Thesetestmethodsprovideaqualitativeindicationofthenaturaldispersivecharacteristicsofclayeysoils.1.2Thesetestmethodsarenotapplicableforsoilswithlessthan12%fractionfinerthan0.005mmandwithaplasticityindexlessthanorequalto8.1.3Thecrumbtestmethodhassomelimitationsinitsusefulnessasanindicatorofdispersiveclay.Adispersivesoilmaysometimesgiveanondispersivereactioninthecrumbtest.Soilscontainingkaolinitewithknownfielddispersionproblemshaveshownnondispersivereactionsinthecrumbtest().However,ifthecrumbtestindicatesdispersion,thesoilisprobablydispersive.1.4Oven-driedsoilshouldnotbeusedtopreparecrumbtestspecimens,asirreversiblechangescouldoccurtothesoilpore-waterphysicochemicalpropertiesresponsiblefordispersion().1.5Thecrumbtestmethod,whileagoodquickindicationofdispersiveclay,shouldusuallyberuninconjunctionwithapinholetestandadoublehydrometertest,TestMethodsD4647andD4221,respectively.Note1Insomecases,theresultsofthepinhole,crumb,anddouble-hydrometertestmethodsmaydisagree.Crumbtestmethodsareabetterindicatorofdispersiveclaysthanofnondispersiveclays().1.6ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:B11
【国际标准分类号】:13_080_20
【页数】:5P.;A4
【正文语种】:
【原文标准名称】:曝光于射频电磁场场强的测量.频率范围在100kHz和1GHz间的场强
【标准号】:EN61566-1997
【标准状态】:现行
【国别】:
【发布日期】:1999-01
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:高频;电磁的;电磁场;频率;电磁试验;曝光;安全措施;辐射危害;负荷;测量仪器;频率范围;危害;极限(数学);工作场所安全;规范(验收);发射机;无线电发射机;测量技术;天线;电磁学;定义;测量;电气工程;无线电设备;职业安全;辐射;场强(电)
【英文主题词】:Antennas;Definition;Definitions;Electricalengineering;Electromagnetic;Electromagneticfields;Electromagnetictests;Electromagnetism;Exposure;Fieldstrength(electric);Frequencies;Frequencyranges;Hazards;Highfrequencies;High-frequencymeasurement;Limits(mathematics);Loading;Measurement;Measuringinstruments;Measuringtechniques;Occupationalsafety;Radiation;Radiationhazards;Radioequipment;Radiotransmitters;Safetymeasures;Specification(approval);Transmitters;Workplacesafety
【摘要】:
【中国标准分类号】:K04
【国际标准分类号】:33_100_10
【页数】:16P.;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodsforDeterminingDispersiveCharacteristicsofClayeySoilsbytheCrumbTest
【原文标准名称】:用团粒试验测定粘性土的色散特性的标准试验方法
【标准号】:ASTMD6572-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:D18.06
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:测定;土壤;试验方法;试验
【英文主题词】:clay(dispersive);colloidalerodability;crumbtestmethod;dispersibility;dispersion;dispersiveclays;erosion
【摘要】:Thecrumbtestmethodprovidesasimple,quickmethodforfieldorlaboratoryidentificationofadispersiveclaysoil.Theinternalerosionfailuresofanumberofhomogeneousearthdams,erosionalongchannelorcanalbanks,andrainfallerosionofearthenstructureshavebeenattributedtocolloidalerosionalongcracksorotherflowchannelsformedinmassesofdispersiveclay(5).Thecrumbtestmethod,asoriginallydevelopedbyEmerson(6),wascalledtheaggregatecoherencetestandhadsevendifferentcategoriesofsoil-waterreactions.Sherard(5)latersimplifiedthetestbycombiningsomesoil-waterreactionssothatonlyfourcategories,orgrades,ofsoildispersionareobservedduringthetest.Thecrumbtestisarelativelyaccuratepositiveindicatorofthepresenceofdispersivepropertiesinasoil.Thecrumbtest,however,isnotacompletelyreliablenegativeindicatorthatsoilsarenotdispersive.Thecrumbtest,canseldomberelieduponasasoletestmethodfordeterminingthepresenceofdispersiveclays.Thedouble-hydrometertest(TestMethodD4221)andpinholetest(TestMethodD4647)aretestmethodsthatprovidevaluableadditionalinsightintotheprobabledispersivebehaviorofclaysoils.Note28212;Thequalityoftheresultproducedbythesetestmethodsisdependentonthecompetenceofthepersonnelperformingit,andthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting.UsersofthesetestmethodsarecautionedthatcompliancewithPracticeD3740doesnotinitselfensurereliabletesting.Reliabletestingdependsonseveralfactors;PracticeD3740providesameansofevaluatingsomeofthosefactors.1.1Thesetestmethodsprovideaqualitativeindicationofthenaturaldispersivecharacteristicsofclayeysoils.1.2Thesetestmethodsarenotapplicableforsoilswithlessthan12%fractionfinerthan0.005mmandwithaplasticityindexlessthanorequalto8.1.3Thecrumbtestmethodhassomelimitationsinitsusefulnessasanindicatorofdispersiveclay.Adispersivesoilmaysometimesgiveanondispersivereactioninthecrumbtest.Soilscontainingkaolinitewithknownfielddispersionproblemshaveshownnondispersivereactionsinthecrumbtest().However,ifthecrumbtestindicatesdispersion,thesoilisprobablydispersive.1.4Oven-driedsoilshouldnotbeusedtopreparecrumbtestspecimens,asirreversiblechangescouldoccurtothesoilpore-waterphysicochemicalpropertiesresponsiblefordispersion().1.5Thecrumbtestmethod,whileagoodquickindicationofdispersiveclay,shouldusuallyberuninconjunctionwithapinholetestandadoublehydrometertest,TestMethodsD4647andD4221,respectively.Note1Insomecases,theresultsofthepinhole,crumb,anddouble-hydrometertestmethodsmaydisagree.Crumbtestmethodsareabetterindicatorofdispersiveclaysthanofnondispersiveclays().1.6ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:B11
【国际标准分类号】:13_080_20
【页数】:5P.;A4
【正文语种】:
