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1.
IntroductionStampingtechniqueisthemainmeansinproduc-ingtheauto-body[1~3].Traditionally,dieisde-signedandproducedbytheskillfulengineers,dependingontheirexperienceandtrialtech-niquesandreferringtothedocumentofthesimi-lardies.Inaway,itisrandomtoarranget…  相似文献   

2.
IntroductionAir-GroundRanging(AGR)isaroutinetaskofairborneradar.Differentradarsystemsusedif-ferentmethodstoaccomplishAGR.Non-phase-coherentradarsystemusesthemethodofrangegatetotrackthezero-passingpointofthediffer-encesignalinordertoaccomplishAGR.Whil…  相似文献   

3.
IntroductionAir-poweredmotorshavetheadvantagesoflowcost,goodpower-to-weightratio,andintrinsi-calysafeoperation[1].Thesecharac...  相似文献   

4.
IntroductionThesampled-dataH∞optimalcontrolproblemistominimizetheL2-inducednormfromthecon-tinuous-timedisturbancetothecontinu...  相似文献   

5.
ON A CONSTANT OF QUASICONFORMAL DEFORMATION   总被引:1,自引:0,他引:1  
IntroductionAcontinuousreal-valuedfunctionf(x)ontherealaxisRissaidtobelongtoZygmundclassΛ(R)ifitsatisfies‖f‖z=supx,t∈Rf(x+t)-2f(x)+f(x-t)t<+∞(1)Acontinuouscomplex-valuedfunctionF(z)iscalledaquasiconformaldeformationifithasgen-eralizedderivationFand…  相似文献   

6.
IntroductionForgivenpositiveintegersv,kandλ,abalancedincompleteblockdesignoforderv,blocksizekandindexλ,denotedB(k,λ;v),isapair(X,A)whereXisav-setandAisacollectionofk-sub-sets(calledblocks)ofXsuchthateach2-subsetofXiscontainedinpreciselyλblocks.Let(X,…  相似文献   

7.
IntroductionAlmosteverylinearofnonliearcontrolstrategycentersaroundaprocessmodel,withreallifeprocessesbeingusuallynonlinear.Theaccuracyofthemodelcoulddirectlyinfluencetheperfor-manceofthefinalcontroller.Linearmodelsal-waysleadtoarelativesimplicityint…  相似文献   

8.
Tuberculosisofthepancreasisarareclinicalentity.Involvementofthegas-trointestinalsystemocursinabout12per-centofpatientswithmil...  相似文献   

9.
IntroductionTheimportanceofsampled-dataestimationorfilteringisincreasingbecauseoftherapiddevel-opmentinthetechnologyofdigital...  相似文献   

10.
IntroductionOctahedralcomplexesofd9Cu(Ⅱ)andhigh-spind4Cr(Ⅱ)orMn(Ⅲ)areexpectedtobesusceptibletoJahn-TellerdistortionscausingthemtodeviatefromidenticalOhsymmetrybyeitheratrigonaldistortionoratetragonalelon-gationorcompression[1].Buttherearesomecopper(Ⅱ…  相似文献   

11.
IntroductionThebucklingdistortionsareoftenobservedinathin-wallweldedstructure.Itisofimportancetopredictandpreventsuchdistortionscausedduringfusionwelding.Comparedwithtradition-alFEManalysis,thethermalandmechanicalbe-haviorsinweldinghavethefollowingch…  相似文献   

12.
Kashin-Beckdisease(KBD)isanen-demic,chronicosteoarthropathy.Themostofcase-controlstudiesandtrialsofpreventionforKBDinlatelytw...  相似文献   

13.
Recently,studiesonpathogenofpregnancy-induced-hypertension(PIH)suggestedthatelevationofPFCa2+concentrationwasanimportantfactortoinducePIH.ThestudiesalsofoundthatthePFCa2+ofPIHpatientswasobvi-ouslyhigherthanthatofnormalpregnancy.Butthemasssamplestudyo…  相似文献   

14.
Althoughadultmammalianhepato-cytesarehighlydiferentiatedandnonpro-liferatingcels,theprimaryculturesofadultrathepatocytescanbe...  相似文献   

15.
Uveoscleraldrainageofaqueoushu-mormeansthataqueoushumorpasses,fromanteriorchamber,throughtheinter-stitialspaceoftheciliarymus...  相似文献   

16.
IntroductionAsynchronousTransferModehasbeengivenconsiderableattentionasapowerwayofaccom-plishinganintegratedservicenetwork[1].InATMNetworks,informationisdividedintoshortfixed-lengthentities,calledcells,whichareprovidedwithflowidentificationlabels,and…  相似文献   

17.
IntroductionThesatutatoristheinnovativepowercyclecom-ponentoftheHumidAirTurbine(HAT)cy-cle[1].Itconsistsofacountercurrentheat...  相似文献   

18.
MPLED-DATA SYSTEMSTX@霍沛军@王子栋IntroductionSampled-datafeedbackcontrolhasreceivedmuchatentionintheareaofcontrolsystemde-signbecauseo...  相似文献   

19.
IntroductionMCFCisanewgenerationoffuelcellthatisef-ficientandclean.Theinternaltemperaturedis-tributionoftheMCFCstackwillinfluencethecellvoltageandcurrentdensity.Therefore,asthetemperatureincreases,thecellperformanceisenhanced,atthesametime,thereisinc…  相似文献   

20.
IntroductionThemainfeatureoftheC-DTListhatithasaphaseerrordetectorwithlinearcharacteristics,whichmeansthatithasawiderlock-inr...  相似文献   

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