共查询到20条相似文献,搜索用时 15 毫秒
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1 Introduction Itiswellknownthatthetorquedevelopedbyapermanentmagnetbrushlessdcmotorisproportionaltothemagnitudeofmotorphasecurrents.ThislinearrelationshipmakesitconvenienttocontrolBLDCMtorqueproductionbyregulatingthemotorphasecurrents[1].Inthispaper,th… 相似文献
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Liu Gaolian 《上海大学学报(英文版)》1999,(1)
1 Introduction Inthelasttwodecadeseverincreasinginterestofscientistsandengineershasbeenattractedtoinverseandoptimizationproblemsofaerodynamics,butuptonowintheliteratureallpapersoninverse/hybridproblemsarestillconfinedtosteadyflow[1-3]. InRef.[5],th… 相似文献
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1 Introduction ThemagneticmaterialsbeingusedinthetreatmentofdiseasesareoneofthosefastestgrowingmeasuresinmedicalscienceinChina.Thepursuingfortherapeuticalmechanismsofmagneticmaterialsisalsoanareaoftraditionalchinesemedicine.Itisnowconsideredtolessen… 相似文献
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FANG Zheng hua YIN Ren he Zakaria A. ZHANG Li Department of Chemistry College of Science Shanghai University Shanghai China 《上海大学学报(英文版)》2001,(2)
1 Introduction Itisknownthattheprotectionefficiencyofzincispartiallyasaresultofformingaprotectivefilmonabasemetal,suchassteel.Althoughpurezinccoatingprovidessomedegreeofprotectionforthesubstrate ,zincisconsumedrapidlyinaseverecorrosionenvi ronment.Conse… 相似文献
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INTRODUCTIONInsectpostembryonicdevelopmentconsistsofgrowthpunctuatedbyaseriesofmoltsfollowedbymetamorphosis.Thesemoltsandmetamor phosisareinitiatedandcoordinatedbyhormones(Riddiford ,1 994 ) .Itisgenerallyacceptedthattheinterplayofecdysteriods,agroupofstero… 相似文献
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AdaptiveConsistentParameterEstimationforNon-GaussianMAProcessesUsing4thOrderCumulantWangXinwen(王新文)HeZhenya(何振亚)(Departmentof... 相似文献
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1 Introduction Thefundamentalphysicalmetallurgyofthermomechanicalprocessing(TMP)hasbecomemuchbetterunderstoodoverthelasttwodecades[1~8].ItiswellcommonlyrecognizedthattheminuteadditionofstrongcarbonitrideornitrideformingelementssuchasNb,TiandVtakesveryimp… 相似文献
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Alberto Rocha TONG Fu 《上海大学学报(英文版)》1999,3(4):293-298
1 Introduction Breastcancerisoneofthemostmalignantdiseases,especiallyforwomen.Anearlydetectioncansavelives,achievedbyearlydetectionwithmammograms.Itisanintensivetaskfortheradiologistbecausemultiplereadingsofasinglemammogramarenecessaryinordertoincre… 相似文献
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INTRODUCTIONThephysicsofavortexlattice (VL)intype IIsuperconductorshasbeenthefocusofinterestsincethebeginningofhigh Tc research .Itiswell knownthat,aftertheexternalmagneticfieldexceedsitscriticalvalueHc1 ,themagneticfieldcanpenetrateatype IIsuperconductorin… 相似文献
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1 Introduction Inthispaper ,atime scaleandpitch scalemodifica tionalgorithm[2 ] basedonsinusoidalmodelisappliedin prosodicmodificationofChinesespeech .Itisapitch synchronousalgorithm .Eachframeofshort termspeechsignalisdecomposedintothesumofsi nusoidalwavesof… 相似文献
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英语中有些动词 ,如remember、stop、forget等 ,其后既可以接动名词 ,也可以接动词不定式 ,但他们所表示的意思有明显的差异 ,同学们在学习中应特别注意。remembertodosth .记住要去做某事 (事情未做 )rememberdoingsth .记得曾做过某事 (事情已做 )例如 :Remembertobuymeseveralstampsnexttimewhenyoucome .记住下一次来时给我买几张邮票。Irememberhavingpaid/payinghimthemo ney .我记得把钱付给… 相似文献
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NTRODUCTIONTemperaturefieldchangewillproducether malstressesinstructures.Itiswellknownthatdifferentmaterialsgeneratedifferentstressre sponses ,andthatinsomecases,thermalstress esarelargeenoughtocausestructurefailure .Soitismeaningfulandimportanttostudydy… 相似文献
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《上海大学学报(英文版)》2002,(4)
·Reviews·PhysicalandMathematicalModelingoftheArgon OxygenDecarburizationRefiningProcessofStainlessSteelWEIJi He (1 )………………………………………………………………………………………………………·Letters·SteganographicTechniqueCapableofWithstandingRQPAnalysisWANGShuo Zhong ZHANGXin Peng ZHANG… 相似文献
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Inducible nitric oxide synthase expression is related to angiogenesis, bcl-2 and cell proliferation in hepatocellular carcinoma 总被引:3,自引:0,他引:3
INTRODUCTIONNitricoxide (NO) ,ashorthalf liferadical,ishighlyreactive ,andisinvolvedinmanybio logicalprocesses,Itseemstoplayanimporta 相似文献
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公丽艳 《山东教育学院学报》2001,16(4):64-67
PartⅠWordsworth ,aRomanticisttheoreti cianandpractitionerWordsworthisafamousBritishRomanticpoetwhobelongstotheLakeSchooloftheRomanticists,andoneoftheforerunnersof 1 9th centuryEnglishRomanticism .Heisnotonlyoneofthegreatesttheoreticiansinpoetry ,butalsoagr… 相似文献
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1 Introduction Itisaneasytaskforexperiencedcytopathologiststoidentifycellsunderopticalmicroscopes,butitisverycomplicatedforcomputertocarryonthesamemissionautomatically.Oneofthemajorreasonsisthevariousparametersandfeaturesofcellsthatoftenoverlapwithe… 相似文献