共查询到20条相似文献,搜索用时 15 毫秒
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INTRODUCTIONTime delays,duetotransportationlags,fi nitecalculationtimes,measurementstimes,etc.,appearinnumerousindustrialandnaturalprocesses,oftenleadingtooscillationsandsome timesinstability.Thestabilityandstabilizationproblemsoftime delaysystemswithorwit… 相似文献
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李世民 《内蒙古师范大学学报(哲学社会科学版)》2001,(Z1)
SamuelL .Clemens,betterknownasMarkTwain ,remainsoneoftheworld’swidelyreadau thors.Toagreatextent,hispopularityhasrestedonhishumor,butitwouldbeamistaketothinkofhimsimplyasahumorist.Todosoistooverlookmanyofhisothersuperiorqualitiesofwriting ,includinghisclar… 相似文献
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Zirconiumalloyspossessingverylowabsorptionforthermalneutrons,goodcorrosionresistanceinhightemperaturewater ,andreasonablemechanicalprop ertiesareimportantmaterialsfornuclearindustry ,andhavebeenemployedasnuclearfuelcladdingandasstructurematerialsinlight… 相似文献
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Oneofthesignificantproblemsarisingfromthemanagementandoperationofmutualfundishowtopre serveappropriatecash position ,whichconsistsofthecashpositionheldbymutualfundandthecashinflowre sultingfrominvestors′purchasingmutualfundshares ,tomeetinvestors′redemp… 相似文献
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董传华 《上海大学学报(英文版)》2000,4(2):112-115
1 Introduction Inquantumoptics ,somenon classicalstatesoflighthavebeenstudiedrecently .Inparticular ,thoseopticalsuperpositionstates ,whicharebasedontheprincipleofquantumsuperposition ,giverisetovariousnon classicalproperties.Numbersuperpositionstates[1] arep… 相似文献
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ThecoreofcollegeEnglishteachingistodevelopstudents’languageusingcompetence ,whichshowstheabilityofone’sreading ,lis tening ,writing ,speakingandtranslation .Inlistening ,teachersusuallytrainstudents’lan guageusingcompetencebymeansofvariouslanguageskills .Upo… 相似文献
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宋夕宁 《山东教育学院学报》2002,17(1):82-83
MaryTyroneisO’Neill’smostfullyrealizedfemalecharacter,afigurewhosesufferingexposesthelimitationsandparadoxesimposedonwomeninaworldshapedaroundmaledesires.InhisportraitofMaryTyrone ,awomanwhochafesattheoverwhelmingdemandsplaceduponher,whoimaginesaworldi… 相似文献
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李芳元 《伊犁教育学院学报》2001,14(1):37-39
Colourwordsarewordsusedtodescribethecoloursofdifferentthings.Besidesindicatingtheirspecificcolours,suchasred ,yellow ,blackandwhite ,theyalsoreflectthedifferentculturalconnota tionsindifferentlanguages.Forexample,Chinesegirlslikewearingreddressesontheirwe… 相似文献
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《上海大学学报(英文版)》2000,(4)
1 Introduction Longrangeorderedintermetallicspossessanumberofadvantages ,suchaslowdensity ,goodhigh tem peraturestrength ,excellentoxidationresistance ,whichmakeitpossibleforthemtobeusedasstruc turalmaterialsforhightemperatureapplications .However ,mostofthe… 相似文献
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1 Introduction Singularlyperturbeddifferentialequationswithturningpointsareveryimportantformathematiciansandphysicistssincetheseproblemsexistwidelyinmanyproblemsofphysics.TheproblemswithturningpointswerestudiedbyWentzal,Kramers,Bullounin[1],Langer,A… 相似文献
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Tolstoy,inhisgreatestnovel WarandPeace,vividlyreproduceseveryaspectofsociallifeinoldRussiabetween1805-1820.Hesuccessfullycreatesavastnumberofcharacters,agroupofprogressivearistocraticyouths,suchas,Pierre,Andrey,Natasha,etc..Theseyouthsabsorbedpowerdirectlyfrom… 相似文献
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武海燕 《内蒙古师范大学学报(哲学社会科学版)》2001,(Z1)
I.IntroductionTeachingmaterialsrefertoanythingthatisusedbyteachersorlearnerstofacilitatethele arningofalanguage.Materialscouldobviouslybecassettes,videos,CD Roms,dictionaries,grammarbooks,readers,workbooks,newspap ers,foodpackagesor photographs.Inotherwords,… 相似文献
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Ye Zhiming 《上海大学学报(英文版)》1999,(1)
1 Introduction Thesolutionsoftemperatureanddisplacementfieldsofdamsareofinteresttomanyresearchersinhydropowerindustryandothersforyears,becauseoftheirimportanceinthesafetyofdams.Generallyspeaking,numericalsolutionsweredevelopedtounderstandthedisplace… 相似文献
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THEORETICALCONSIDERATIONSInthepast 2 0 years,withpsycho linguisticsprobingdeeperintolearningstrategies,researchonlisteningcomprehensionstrategies,donebywesternscholars,hasalsoreachedaclimax .Theirresearchmainlycoverstwoaspects :researchonlisteningcomprehens… 相似文献
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SOFTWAREEVOLUTIONSoftwareevolutionhasbeenaddressedfrommanyviewpoints .Theseincludemanagementis suessuchaswhichpartsofasystemshouldberebuilt,configurationissuessuchaskeepingtrackofmanyversionsofthesamesystem ,test ingissuessuchasdeterminingwhichtestcases… 相似文献
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AAsinglemother,LiRuizhiranintoseriousfinancialproblemshalfayearago .Herformerhusband ,whoshedi vorcedin 1 990refusedtopaythemoneyhepromisedfortheirson .Asanordinaryworker,shecouldnotearnenoughtosupporthersonwhoisnowacollegestudent.Whatwasshetodo ?Afterprivate… 相似文献
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INTRODUCTIONCr4 :YAGcrystalshadbeenwidelyusedassaturableabsorbersforflashlamppumpedoscil latorandMOPAsystems (Shimonyetal.,1 995,1 996,Eichler,1 994 ,1 995,Yankov,1 994 )aswellasindiodepumpedlasers(Zayhowskietal.,1 994 ) .Theypresentedaneasywaytogen eratepassivelyQ switchedlase… 相似文献
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INTRODUCTIONTheproblemofmentaloverloadbecamein creasinglyseriouswithdevelopmentofindustrialautomation .Inmanyindustrialstations,itwasbelieved ,operatorswerefrequentlyunderthepressureofhighmonitoringmentalworkloadbe causemanypanelsandotherinstrumentsmust… 相似文献