学科分类
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443 个结果
  • 简介:TheJournalofSystemsEngineeringandElectronics(EnglishEdition)isacomprehensiveacademicperiodicaljointlysponsoredbytheSecondAcademyofChinaAerospaceScienceandIndustryCorporation,theChineseSocietyofAstronautics,theSystemsEngineeringSocietyofChinaandtheChineseAssociationforSystemSimulation.Itstartedpublicationin1990,andnowappearsfourtimesayear,distributedathomeandabroad.

  • 标签: 系统工程与电子技术(英文版) 期刊介绍 研究领域 栏目设置
  • 简介:TheJournalofSystemsEngineeringandElectronicsisacomprehensiveacademicperiodicaljointlysponsoredbyDefenseTechnologyAcademyofChinaAerospaceScience&IndustryCorporation,ChineseSocietyofAstronautics,SystemEngineeringSocietyofChina,andChineseAssociationforSystemSimulation.Itstartedpublicationin1990,andnowispublishedbimonthly.Pursuingbothintensivenessandextensiveness,

  • 标签: 系统工程 电子技术 英文 学术期刊 国防科技 航天科技
  • 简介:ThecomponentsofexpansivesoilwereanalyzedwithEDAX,anditisshownthatthemaincontentsofexpansivesoilinthenorthernHubeihavesomesignificanteffectsonengineeringpropertiesofexpansivesoil.Furthermore,thesoilmodifiedbylimehasanobviousincreaseofCa2+andanimprovementofconnectionsbetweengranulessoastoreducetheexpansibilityandcontractilityofsoil.Anditalsohasabettereffectonthemodifiedexpansivesoilthantheonemodifiedbypulverizedfuelash.

  • 标签: 膨胀土 工程性能 矿物成分 化学成分
  • 简介:Duetotheindividualelectricalandmechanicalcharacteristicsofresistanceweldingmachines,choiceoftherightmachineandweldingparametersforanoptimizedproductionisoftendifficult.Thisisespeciallythecaseinprojectionweldingofcomplexjoints.Inthispaper,anewapproachofcharacterizingtheelectricalpropertiesofACresistanceweldingmachinesispresented,involvingtestingandmathematicalmodellingoftheweldcurrent,thefiringangleandtheconductionangleofsiliconcontrolledrectifierswiththeaidofaseriesofproofresistances.Themodelpredictstheweldcurrentandtheconductionangle(orheatsetting)ateachsetcurrent,whentheworkpieceresistanceisgiven.

  • 标签: 电阻焊接 电性质 焊接电流 传导角