共查询到20条相似文献,搜索用时 15 毫秒
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《上海大学学报(英文版)》1999,3(2):2H
Physicalpropertiesofacrystalarerelatedtoitsconstituentchemicalbonds,whichshowtheinteractionofalconstituentatoms.Chemicalbond... 相似文献
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高中英语作业中常见病句分析铁一局兰州铁中赵和忱兰州回中崔耕1.Theirclassconsistof45students.(误)Theirclassconsistsof45students.(正)他们班由45个学生组成。class是集合名词,本句中可... 相似文献
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LI Gen guo 《上海大学学报(英文版)》1999,3(4):263-269
1 Introduction Considerthemodelx ¨+x(1-x)(x-a)=0,(1)whereaisaconstant.Asa=-1,Eq.(1)reducestotheDuffingequationforthesystemofsoftspringwithoutdampingx ¨+x-x3=0.(2) TheDuffingsystemhasbroadengineeringbackground.Therearepapers[1~4]relatedtothedynamic… 相似文献
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SHI Ding hua PENG Jian ping 《上海大学学报(英文版)》1999,3(3):175-180
1 Introduction Stochasticglobaloptimizationalgorithmisconcernedwithusingrandomlygeneratedpointstoapproximateoptimalsolutionofmathematicalprogramming(seeRefs.1~3forasurveyofthefield).Forsomestochasticglobaloptimizationalgorithms,thenextpointsintheseq… 相似文献
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CHENG Chang jun ZHANG Neng hui 《上海大学学报(英文版)》1999,3(3):192-198
1 Introduction Thedevelopmentofscienceandtechnologypromotestheapplicationsofviscoelasticstructures.Sinceanintegraltypeconstitutiverelationcanbeusedtosimulatethemechanicsbehaviorofaviscoelasticmaterialbetter,itiswidelyapplied.However,ifweapplyaninte… 相似文献
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1 Introduction Toachieveourtargetinthecomingfifteenyears,itisessentialandimprotantinallrespectstotransformoureconomicgrwothmodeandimproveoureconomicqualityandbenefitconscientiously.Tomakefullunderstandingaboutthetransformingcanhelpustomaintainahigh… 相似文献
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董传华 《上海大学学报(英文版)》1999,3(1):42-46
1 Introduction H.P.Yuenintroducedtheconceptoftwophotoncoherentstatein1976[1].Sincethattime,thesqueezedstateshavebeenoneofthemainsubjectsinquantumoptics.Usualsqueezingreferstothesecondordersqueezing.C.K.HongandL.Mandelgeneratedthesqueezingtohighe… 相似文献
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Xia Nan 《上海大学学报(英文版)》1999,(1)
1 Introduction Theproblemonthestabilityofinviscidincompressibleswirlingflowhasbeenstudiedbymanyauthors.Rayleigh[1]investigatedtheflowwithconstantaxialvelocity,i.e.U′=dUdr=0andfirstgotasufficientandnecessaryconditionofstabilityforaxisymmetricdistur… 相似文献
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1 Introduction ThemagneticmaterialsbeingusedinthetreatmentofdiseasesareoneofthosefastestgrowingmeasuresinmedicalscienceinChina.Thepursuingfortherapeuticalmechanismsofmagneticmaterialsisalsoanareaoftraditionalchinesemedicine.Itisnowconsideredtolessen… 相似文献
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INTRODUCTIONConstructioncostcontrolisimportantactivityforefficientmanagementofaconstructionproject.Acostcontrolsystemmustbedesignedtocontrolwelltheconstruction (WangShou qing,1 996) .Thissystemshouldbeprovidedwiththefunctiontolettheprojectmanagerknowthecur… 相似文献
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ZHANG Zhao yang GAO Lei ZHANG Ying CHEN Hao 《上海大学学报(英文版)》1999,3(3):208-213
1 Introduction Inimagecompressioncodingschemes,variousimagecodingtechniquessuchastransformcodinghavebeendeveloped.Whilethesetechniqueshaveledtorelativelyhighqualityreconstructedimagesatbitratesaround1.0b/pixelormore,theysometimesproducespecifictypeof… 相似文献
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Hua Bin Shi Liyi 《上海大学学报(英文版)》1999,(1)
1 Introduction Tindioxidefilmshavebeenwidelyusedasconductiveelectrodes,transparentcoatings,andheterojunctionsolarcells.SnO2filmswithdifferentstructurescanbeconstructedbychemicalvapordepositiononsubstratesofdifferenttemperatures.AboafandMarcotte[1]pr… 相似文献
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Doctoral Candidate: TAN Fa sheng Advisor: Prof. DAI Shi qiang Prof. WENG Pei fen 《上海大学学报(英文版)》1999,3(3):259-262
Motivatedbyredesigningafuselageinengineeringapplication,thenumericalandexperimentalinvestigationoftheseparatedflowfieldaroundaspecialbluntbodyisdescribedinthisthesis.Theaerodynamicresponseofthebluntbodyissuccessivelystudied.Thethesisconsistsoffour… 相似文献
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EFFECT OF CORROSION ON BOND BEHAVIOR AND BENDING STRENGTH OF REINFORCED CONCRETE BEAMS 总被引:1,自引:0,他引:1
INTRODUCTIONThereisgrowingconcernforcorrosiondam ageinreinforcedconcrete (RC)structureswithseveraldecades’service.Thereinforcementcor rosionofRCconstructionsprobablyisthemostsignificantproblemandoutweighsotherformsofdeterioration .StudiesbyPeattieetal.( 1 9… 相似文献
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PENG Zheng long SUN Hong guang * CHEN Jun ZHANG Qi jun * 《上海大学学报(英文版)》1999,3(4):331-335
1 Introduction Facingtheintensivecompetition,managersordirectorsofenterprisesaremuchconcernedwiththeiroperations.Ontheonehand,theyaresupposedtoexactlyknowtheactualoperatingoutcomesinvariousperiods;andontheotherhand,theyarerequiredtoknowthestatusoft… 相似文献
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Edward Thomas 《语文世界(高中版)》2000,(4)
Bright clouds of MayShade half the pond.Beyond,All but one bayOf emeraldTall reedsLike criss- cross bayonetsWhere a bird once called,Lies brigh as the sun.No one heeds.The light wind frets.And drifts the scumOf may-blossomTill the moorhen callsAgainNaught’ s to … 相似文献
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1 Introduction Itisaneasytaskforexperiencedcytopathologiststoidentifycellsunderopticalmicroscopes,butitisverycomplicatedforcomputertocarryonthesamemissionautomatically.Oneofthemajorreasonsisthevariousparametersandfeaturesofcellsthatoftenoverlapwithe… 相似文献
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1 Introduction Generallyspeaking ,productconcurrentdesignislo calizedwithinenterprises .Withtheincessantdevel opmentofInternetandweb basedapplicationtech niques,however ,itisurgentlyneededtocopewiththeproblemsofproductconcurrentandcollaborativedesignindisc… 相似文献