joinedhjsm

hjsm  时间:2021-02-21  阅读:()
BondGraphsforModelling,ControlandFaultDiagnosisofEngineeringSystemsWolfgangBorutzkyEditorBondGraphsforModelling,ControlandFaultDiagnosisofEngineeringSystemsSecondEdition123EditorWolfgangBorutzkyBonn-Rhein-SiegUniversityofAppliedSciencesDepartmentofComputerScienceSanktAugustin,GermanyISBN978-3-319-47433-5ISBN978-3-319-47434-2(eBook)DOI10.
1007/978-3-319-47434-2LibraryofCongressControlNumber:2016955827SpringerInternationalPublishingSwitzerland2011,2017Thisworkissubjecttocopyright.
AllrightsarereservedbythePublisher,whetherthewholeorpartofthematerialisconcerned,specicallytherightsoftranslation,reprinting,reuseofillustrations,recitation,broadcasting,reproductiononmicrolmsorinanyotherphysicalway,andtransmissionorinformationstorageandretrieval,electronicadaptation,computersoftware,orbysimilarordissimilarmethodologynowknownorhereafterdeveloped.
Theuseofgeneraldescriptivenames,registerednames,trademarks,servicemarks,etc.
inthispublicationdoesnotimply,evenintheabsenceofaspecicstatement,thatsuchnamesareexemptfromtherelevantprotectivelawsandregulationsandthereforefreeforgeneraluse.
Thepublisher,theauthorsandtheeditorsaresafetoassumethattheadviceandinformationinthisbookarebelievedtobetrueandaccurateatthedateofpublication.
Neitherthepublishernortheauthorsortheeditorsgiveawarranty,expressorimplied,withrespecttothematerialcontainedhereinorforanyerrorsoromissionsthatmayhavebeenmade.
Printedonacid-freepaperThisSpringerimprintispublishedbySpringerNatureTheregisteredcompanyisSpringerInternationalPublishingAGTheregisteredcompanyaddressis:Gewerbestrasse11,6330Cham,SwitzerlandForewordProf.
BorutzkyhasaskedmetowriteaforewordtothissecondeditionofthebookBondGraphModellingofEngineeringSystems.
ThisputmeinmindofthetimewhenRonaldC.
RosenbergandI,asAssistantProfessorsatMIT,usedtostopatabarinHarvardSquaretowaitforthetrafctosubsideonourwayhomefromwork.
(Ron'sdoctoralthesisresultedintheENPORTprogram,therstbondgraphprocessor,which,althoughrestrictedtolinearsystems,wouldsolvetheproblemsassociatedwithdifferentialcausalityinsimulation.
)Weoftendiscussedwhattechnicalareasweshouldworkoninthefutureandwecametotheconclusionthatbondgraphs,recentlyinventedbyouradvisor,Prof.
HenryM.
Paynter,wereworthyofbeingbetterknowntothegeneralworldratherthanjusttoMITgraduatestudents.
Theresultwasourrstbookintendedforself-studyofbondgraphmethods,AnalysisandSimulationofMultiportSystems:TheBondGraphApproachtoPhysicalSystemDynamics,TheMITPress,1968.
Whenthebookwasnished,Prof.
PaynteraskedusifhecouldprovideaForewordintheformofaHistoricalNote.
WenaturallyagreedandtheresultisafascinatingtwopagehistoryofPaynter'sthoughtstarting,hesays,inhighschool.
Hispersonalreferencesgobacktothe1950s,buthisreferencestochemicalstructuregraphsgobackanother100years.
HisnalparagraphofhisHistoricalNoteisasfollows:ThusweredevisedonApril29,1959,thetwoideal3-portenergyjunctions(0,1)torenderthesystemofbondgraphsacompleteandformaldiscipline.
Thecompletesystemwasthenrstpublishedin1961.
Asyoucansee,Prof.
Paynterwasthinkingofhisreputationinthefuture.
ThepublicationmentionedwastheMITpressbookAnalysisandDesignofEngineeringSystems,1961,wasinfactapaperbackcompilationofclassnotestakenbyagraduatestudentand,asPaynteradmitted,thegluedtogetherbooktendedtofallapartasitspageswereturned.
(Thiswasagreatdisadvantagetoslowlearners.
)Thus,bondgraphsremainedforawhileonlyknowntothosewhohadstudiedatMIT.
vviForewordProfessorPaynterwouldcertainlybegratiedtoseetheinterestinbondgraphsthathasdevelopedinthepast60years.
Thepresentvolumeisatestimonytolargenumberofresearcherswhoarepresentlycontributingtoextensionsofbondgraphtechniquesandtonewapplicationareas.
Healsomightbesurprisedtolearnthathis"completeandformaldiscipline"hasbeenextendedindirectionsheneverwouldhavethoughtpossible.
Thereis,ofcourse,somedangerinextendingbondgraphtechniquestoincludeidiosyncraticnotationandmanipulationsthatapplytoevermorespecialcases.
Intheearlyyears,thoseofusinterestedinpromotingbondgraphmethodshadtoghtthosewholikedtheforce-currentanalogybetterthantheforce-voltageanalogysincetheyproducedbondgraphswith0'sand1'sandI'sandC'sinterchanged,whichprovidedabarriertothosenewcomersinterestedinlearningthebenetsofbondgraphmethods.
Thisvolumeisanexampleofthecorrectapproachinwhichtheauthorstakepainstomakeclearwhyspecialnotationorspecialmanipulationsonabondgrapharenecessarytoprovideinsightintoproblemswhichdon'tyieldtostandardbondgraphtechniques.
WhenIcontemplatePaynter'scontributiontophysicalsystemdynamics,andofthoseofpresentdayengineerswhocontinuetoadvancebondgraphtechniquesasevidencedbythepresentvolume,Ithinkofthewell-knownquotefromGoethe'sFaust:WasduererbtvondeinenVternhast,erwirbes,umeszubesitzen.
(Thatwhichyouinheritfromyourfathers,youmustearninordertopossess.
)Theauthorsofthepresentvolumehaveclearlytakenthisadvicetoheart.
Davis,CA,USADeanKarnoppJuly2016PrefaceBythebeginningof2011,SpringerpublishedacompilationtextofanumberofresearchersfromallovertheworldonBondGraphModellingofEngineeringSystems.
Thebookcoverstheoreticalandmethodologicaltopicsaswellassomeapplicationsandtheuseofsoftwareforbondgraphmodellingandsimulation.
Theaimwastopresentthestateoftheartinbondgraphmodellingbyaddressinglatestdevelopmentsandintegratingvariousworksinauniedmanner.
Insummer2014,theeditorwasinvitedtoprepareasecondeditionofthe2011compilationtext.
Duetotheactiveongoingresearchofmycolleagues,theircommitment,theirexpertise,andtheircontributionstheoutcomeofthisnewbookproject,inmyview,hasbecomemorethanarevisionoftherstedition.
Thisnewbookagaincoverssometheoreticalissues,applicationsandsoftwaresupportastherstedition.
However,thefocusofthesecondeditionisonlatesttopicsaswellasonsubjectsthathaven'tbeencoveredintherstedition.
Moreover,newyoungexcellentresearchershavejoinedtheteamtogetherwithco-authorswhohavebeenusingbondgraphintheirresearchandinteachingforalongtime.
Therefore,theresultofthisprojectmaybeconsideredanovelbookthatreectstheactiveresearchinthebondgraphmodellingcommunityandlatestachievementsoverarathershortperiodofthepastveyears.
AnumberofthecontributedchaptershavearisenfromrecentlynishedPhDtheses.
BondgraphsweredevisedbyProfessorH.
Payntersome60yearsbackattheMassachusettsInstituteofTechnology(MIT)inCambridge,Massachusetts,USA,andweredevelopedintoamethodologybyhisformerPhDstudentsProfessorD.
KarnoppandProfessorD.
Margolis(UniversityofCaliforniaatDavis)andProfessorR.
Rosenberg(MichiganStateUniversity,EastLansing,Michigan).
Sincethenthebondgraphapproachtophysicalsystemmodellingandsimulationhasbeenadoptedbymanyresearchers.
Thecontributionstothisbookwelldemonstratethattoday,60+yearslater,thebondgraphmethodologyhasspreadfromMITallovertheworldandissuccessfullyusedinvariousengineeringelds.
Thebookisorganisedintoveparts.
Eachofthemstartswithanintroductionthatmotivatesthesubjectsandestablishesrelationsbetweenthechaptersofapart.
Thecontributedchaptersshowthatbondgraphsaremorethanjustamethod-ologyformodellingandsimulationofmultidisciplinarysystemsdescribedbyviiviiiPrefacecontinuoustimemodels.
Beyondthatapplicationarea,bondgraphscanalsobeusedtorepresenthybridmodelswithcontinuoustimeanddiscretestatevariables.
Furthermore,bondgraphmodellinghasprovenusefulincontrolandasonepossiblestartingpointformodel-basedfaultdiagnosisandfaultprognosisinengineeringsystems.
Theseareasbecomemoreandmoreimportantwithanincreaseofthecomplexityoftoday'smechatronicsystemsandatrendtoatleastpartlyautonomoussystems.
Representinghybridmodelsinabondgraphframeworkandbondgraphmodel-basedfaultdiagnosisandfaultprognosisaretopicsinthefocusofthisnewbook.
Accordingly,thetitleofthersteditionhasbeenadapted.
Anothertopicthatisnotnewbutofstillongoinginterestisthequestionofhowopenthermodynamicsubsystemswithcompressibleuidowandmechanicalsubsystemsdescribedbyadistributedparametermodelcanbeintegratedinalumpedparametermodelofacomplexoverallsystem.
PartIIIpresentsanextensionofcommonbondgraphsformodellingthermodynamicsubsystemsintroducedbyProfessorBrownthatcanbecombinedwithconventionalbondgraphsforotherpartsofanengineeringsystemandissupportedbyamaturemodellingandsimulationsoftwareenvironmentnewlydevelopedoverthepastyears.
Astodistributedparametersubsystems,anapproachbasedonnitesegmentsandanactivitymetricispresentedthataimsatalumpedparametermodelofreducedordersufcientlyaccurate.
PartIVillustratestheremarkablewiderangeofapplicationsinwhichbondgraphshavebeenusedformodellingmechatronicsystemsofcurrentinterestbycontributedchaptersrangingfromawheelchair,torobotsforinvivosurgery,orwalkingmachinesthatcanbeusedforoperationsinhazardouselds,towindturbinesintheareaofrenewableenergysources.
ProfessorHenryPaynter,theinventorofbondgraphs,envisagedapplicationsofbondgraphmodellingtochemistry,electrochemistryandbiochemistryalreadybackin1992.
Sincethennottoomanyresearchershaveusedbondgraphsformodellingchemicalreactions.
OnechapterinPartIVextendsbondgraphmodellingeventobiomolecularsystemsoflivingorganisms.
Asthelatteronesareopensystemsthatarenotatthermodynamicequilibrium,bondgraphrepresentationsoftheirbiomolecularsystemsarenotevident.
Thechapterintroducesappropriatebondgraphvariables.
MolecularspeciesarerepresentedbyanonlinearCelementandreactionsbyanonlineartwo-portRelement.
Asaresult,bondgraphmodellingasagraphicalapproachgivesmoreintuitiveinsightthanpurelynumericalapproaches.
Astotheresultsofsimulationruns,ithasbecomecommonthatsomesoftwareprovidesapostprocessingmodulethatenablesavisualisationofmechanicalmotionin3Dunderdifferentanglesofviews.
Thelastchapterofthiscompilationtextpresentsanovelapproachthatlinksabondgraphmodellingandsimulationprogramtoaprogramforthegeometricaldesignofcomplexmultibodysystemssuchasrobotswithseveraldegreesoffreedomsothatthe3Dmotionofarobotisvisualisedsimultaneouslywithsomelittledelaytoitsnumericalcomputation.
Althoughthiscontributedbookaimstoreectthecurrentstateoftheartinbondgraphmodellingbypresentinganddiscussingadvancedrecenttopics,allchaptershavebeenwritteninsuchawaythatnewcomerstothemethodologyPrefaceixwithsomeknowledgeofthebasicsmayeasilygetintothevastfascinatingandopeneldofadvancedbondgraphmodelling.
Readerswhomaywanttohaveacloserlookatbondgraphfundamentalsmayndreferencestolatestmonographsandtextbooks.
Furthermore,eachchapterprovidesmanyreferencestoconferencepapers,journalarticlesandPhDthesesonadvancedtopics.
Thismultipleauthorsbookwellcomplementslatestmonographsandtextbooksonbondgraphmodellingandmayserveasaguideforfurtherself-studyandasareference.
BondGraphsforModelling,ControlandFaultDiagnosisofEngineeringSystemscontinuesthepresentationofitspredecessortitledBondGraphModellingofEngineeringSystemsandlikethelatteroneaddressesreadersinacademiaaswellaspractisingengineersinindustryandinvitesexpertsinrelatedeldstoconsiderthepotentialandthestateoftheartofbondgraphmodelling.
Itishopedthatthebondgraphmethodologymaycontributetomoreinsightintophysicalprocessesandtothedevelopmentofusefulmodelsintheirengineeringeld.
AcknowledgementsThisvolumewouldnothavebeenpossiblewithoutthecommitment,theexpertiseandtheeffortsofmycolleagues.
Iwouldliketotakethisopportunitytothankallmyco-authorsfortheircontributedchapters.
Likewise,Iwishtothankallcolleagueswhokindlytookthetimetoreadthechapters.
Theirvaluablecommentsandsuggestionsaregratefullyacknowledged.
MyspecialthanksgotoProfessorDeanKarnopp,UniversityofCaliforniaatDavis,oneoftheleadingpioneersofthebondgraphmethodology,whokindlyhonouredallauthorsofthiscompilationtextbywritingtheforewordwithsomepersonalnotes.
Also,IappreciatethesupportthismultipleauthorbookprojectreceivedfromProfessorsYuriMerkuryev,RigaTechnicalUniversity,Latvia;DavidMurray-Smith,UniversityofGlasgow,Scotland,UK;RonaldRosenberg,MichiganStateUniversity,EastLansing,MI,USAandGregorioRomero,UniversidadPolitécnicadeMadrid,Spain.
Lastbutnotleast,IwishtothankmyEditorwithSpringeratNewYork,NY,USA,MaryJames,forherinvitationtothisbookproject,forherkindconstantsupportduringthisbookprojectandBrindaMegasyamalan,ProjectCoordinator,SasiReka,ProjectManager,forthecooperationthroughoutthebookproduction.
SanktAugustin,GermanyWolfgangBorutzkyJuly2016ContentsPartIBondGraphTheoryandMethodology1DecompositionofMultiports5PeterC.
Breedveld2AMethodforMinimizingtheSetofEquationsinBondGraphSystemswithCausalLoops27JesusFelez3ControlledSwitchedStructuresforBond-GraphModellingandSimulationofHybridSystems.
47MatíasA.
NacusseandSergioJ.
Junco4DynamicCausalityinHybridBondGraphs87RebeccaMargettsandRogerF.
NgwompoPartIIBondGraphModellingforFaultDiagnosis,FaultTolerantControl,andPrognosis5IntegratingBondGraph-BasedFaultDiagnosisandFaultAccommodationThroughInverseSimulation.
139W.
Borutzky6Model-BasedDiagnosisandPrognosisofHybridDynamicalSystemswithDynamicallyUpdatedParameters195OmPrakashandA.
K.
Samantaray7ParticleFilterBasedIntegratedHealthMonitoringinBondGraphFramework233MayankS.
Jha,G.
Dauphin-Tanguy,andB.
Ould-BouamamaxixiiContentsPartIIIThermodynamicSystemsandDistributedParameterSystems8ConvectionBondGraphsforThermodynamicSystems275ForbesT.
Brown9FiniteElementFormulationforComputationalFluidDynamicsFramedWithintheBondGraphTheory311JorgeLuisBalio10ModelComplexityofDistributedParameterSystems:AnEnergy-BasedApproach.
359L.
S.
LoucaPartIVApplications11BondGraphModelingandSimulationofaVibrationAbsorberSysteminHelicopters387BenjaminBoudon,FranoisMalburet,andJean-ClaudeCarmona12ManualDrivenWheelchairBondGraphModelling431AbdennasserFakriandJapiePetrusVilakazi13BondGraphModellingandControlofHyper-RedundantMiniatureRobotforIn-VivoBiopsy.
451MihirKumarSutarandPushprajManiPathak14BondgraphModelingandControlofCompliantLeggedQuadrupedRobot497M.
M.
Gor,P.
M.
Pathak,A.
K.
Samantaray,J.
M.
Yang,andS.
W.
Kwak15ModelingandControlofaWindTurbine547R.
TapiaSánchezandA.
MedinaRios16Bond-GraphModellingandCausalAnalysisofBiomolecularSystems587PeterJ.
GawthropPartVSoftware17MultibodySystemModeling,Simulation,and3DVisualization.
.
.
.
.
.
627VjekoslavDamicandMajdaˇCohodarAppendixASomeTextbooksonBondGraphModelling.
673Index675ContributorsJorgeLuisBalioEscolaPolitécnica,UniversidadedeSoPaulo,SoPaulo-SP,BrazilW.
BorutzkyBonn-Rhein-SiegUniversityofAppliedSciences,SanktAugustin,GermanyBenjaminBoudonUniversitéAix-Marseille,Marseille,FrancePeterC.
BreedveldTwenteUniversity,Enschede,TheNetherlandsForbesT.
BrownLehighUniversity,Bethlehem,PA,USAJean-ClaudeCarmonaEcoleNationaleSupérieured'ArtsetMétiers,Centred'Aix-en-Provence,Aix-en-Provence,FranceMajdaˇCohodarUniversityofSarajevo,Sarajevo,BosniaandHerzegovinaVjekoslavDamicUniversityofDubrovnik,Dubrovnik,CroatiaG.
Dauphin-TanguyEcoleCentraledeLille,Villeneuved'Ascq,FranceAbdennasserFakriUniversitéParis-Est,Marne-la-Vallée,FranceJesusFelezUniversidadPolitécnicadeMadrid(UMP),Madrid,SpainPeterJ.
GawthropUniversityofMelbourne,Parkville,VIC,AustraliaM.
M.
GorG.
H.
PatelCollegeofEngineering&Technology,Gujarat,IndiaMayankS.
JhaInstitutNationaldesSciencesAppliquéesdeToulouse(INSA),Toulouse,FranceSergioJ.
JuncoUniversidadNacionaldeRosario,Rosario,ArgentinaS.
W.
KwakKeimyungUniversity,Daegu,SouthKoreaL.
S.
LoucaUniversityofCyprus,Nicosia,CyprusxiiixivContributorsFranoisMalburetEcoleNationaleSupérieured'ArtsetMétiers,Centred'Aix-en-Provence,Aix-en-Provence,FranceRebeccaMargettsUniversityofLincoln,Lincoln,UKMatíasA.
NacusseUniversidadNacionaldeRosario,Rosario,ArgentinaRogerF.
NgwompoUniversityofBath,Bath,UKB.
Ould-BouamamaEcolePolytechniquedeLille,Villeneuved'Ascq,FrancePushprajManiPathakIndianInstituteofTechnology,Roorkee,Uttarakhand,IndiaOmPrakashIndianInstituteofTechnology,Kharagpur,IndiaA.
MedinaRiosUniversidadMichoacanadeSanNicolásdeHidalgo,Morelia,MexicoA.
K.
SamantarayIndianInstituteofTechnology,Kharagpur,IndiaR.
TapiaSánchezUniversidadMichoacanadeSanNicolásdeHidalgo,Morelia,MexicoJapiePetrusVilakaziTshwaneUniversityofTechnology,Pretoria,RepublicofSouthAfricaJ.
M.
YangKyungpookNationalUniversity,Daegu,SouthKoreaAbbreviationsANNArticialNeuralNetworkARRAnalyticalRedundancyRelationAVPAngularVelocityPropagationBDBlockDiagramBDFBackwardDifferentiationFormulaBEMBladeElementMomentumBGBondGraphBGDBondgraphinpreferredderivativecausalityBG-LFTBondGraphinLinearFractionalTransformationCBMConditionBasedMaintenanceCFDComputationalFluidDynamicsCGCentreofGravityCJControlledJunctionCKCClosedKinematicChainCTFCoordinateTransformationBlockDAEDifferential-AlgebraicEquationDBGDiagnosticBondGraphDCDirectCurrentDFIGDoublyFedInductionGeneratorDFIMDoublyFedInductionMotorDHBGDiagnosticHybridBondGraphDMDegradationModelDOFDegreeofFreedomDPPDegradationProgressionParameterDSCAPDynamicSequentialCausalityAssignmentProcedureEJSEulerJunctionStructureEOLEndofLifeEPPWElectricPowerPropelledWheelchairFDIFaultDetectionandIsolationFDMFiniteDifferenceMethodFEMFiniteElementMethodxvxviAbbreviationsFROIFrequencyRangeofInterestFSAFiniteStateAutomatonFSMFiniteSignatureMatrixFTCFaultTolerantControlFVMFiniteVolumeMethodGARRGlobalAnalyticalRedundancyRelationGFSMGlobalFaultSignatureMatrixGFSSMGlobalFaultSensitivitySignatureMatrixGSJGeneralizedSwitchedJunctionGYSGyristorHBGHybridBondGraphHJSMHybridJunctionStructureMatrixHyPAHybridProcessAlgebraJSMJunctionStructureMatrixLCPLinearComplementarityProblemLCSLinearComplementaritySystemLFTLinearFractionalTransformationFormLLLegLiftLTILinearTimeInvariantsystemLWRLighthill,WhithamandRichardsMBDPModel-BasedDiagnosisandPrognosisMBGMultibondGraphMBSMultibodySystemMCSMModeChangeSignatureMatrixMCSSMModeChangeSensitivitySignatureMatrixMDMMechatronicDriveModularMDMWModularDrivenManualWheelchairMFCMicrosoftFoundationClassMGBMainGearBoxMIMOMultipleInputMultipleOutputsystemMODAModelOrderReductionAlgorithmMORAModelOrderDeductionAlgorithmMPWManualPropelledWheelchairMSCMachineSideConverterNSCNetworkSideConverterODEOrdinaryDifferentialEquationPDProportionalDerivativePDEPartialDifferentialEquationPDFProbabilityDensityFunctionPFParticleFilterPIProportionalIntegralPIDProportional,IntegralandDerivativePLPrismaticLinkRARelativeAccuracyRANSReynolds-averagedNavier-StokesAbbreviationsxviiRMSERootMeanSquareErrorRPRevolute-prismaticRULRemainingUsefulLifeSARIBSystèmeanti-résonateurintégréàbarresSBGSensitivityBondGraphSCAPSequentialCausalityAssignmentProcedureSCRSiliconControlledRectierSIRSamplingImportanceResamplingSISSequentialimportancesamplingSISOSingleInputSingleOutputsystemSLStepLengthSOHStateofHealthSPJSwitchedPowerJunctionSS-BondSwitchableStructureBondSSFSetofSuspectedFaultSwBGSwitchedBondGraphTCPToolCentrePointTTFTimetoFailureTVPTranslationalVelocityPropagationUIOUnknownInputObserverVTKVisualizationToolkitZCZeroComplianceZCPZero-orderCausalPathZEZeroEffortZFZeroFlow

RAKsmart(年79元),云服务器年付套餐汇总 - 香港 美国 日本云服务器

RAKsmart 商家从原本只有专注于独立服务器后看到产品线比较单薄,后来陆续有增加站群服务器、高防服务器、VPS主机,以及现在也有在新增云服务器、裸机云服务器等等。机房也有增加到拥有洛杉矶、圣何塞、日本、韩国、中国香港等多个机房。在年前也有介绍到RAKsmart商家有提供年付129元的云服务器套餐,年后我们看到居然再次刷新年付云服务器低价格。我们看到云服务器低至年79元,如果有需要便宜云服务器的...

Stablehost 美国主机商黑五虚拟主机四折

如今我们网友可能较多的会选择云服务器、VPS主机,对于虚拟主机的话可能很多人不会选择。但是我们有些外贸业务用途的建站项目还是会有选择虚拟主机的。今天看到的Stablehost 商家虚拟主机在黑五期间也有四折优惠,对于这个服务商而言不是特别的喜欢,虽然他们商家和我们熟悉的老鹰主机商有些类似,且在后来老鹰主机改版和方案后,Stablehost 商家也会跟随改版,但是性价比认为不如老鹰主机。这次黑色星期...

DMIT:香港国际线路vps,1.5GB内存/20GB SSD空间/4TB流量/1Gbps/KVM,$9.81/月

DMIT怎么样?DMIT是一家美国主机商,主要提供KVM VPS、独立服务器等,主要提供香港CN2、洛杉矶CN2 GIA等KVM VPS,稳定性、网络都很不错。支持中文客服,可Paypal、支付宝付款。2020年推出的香港国际线路的KVM VPS,大带宽,适合中转落地使用。现在有永久9折优惠码:July-4-Lite-10OFF,季付及以上还有折扣,非 中国路由优化;AS4134,AS4837 均...

hjsm为你推荐
易pc华硕易PC这款本本值不值的买勒?windows优化大师怎么用windows优化大师怎么用啊?申请证书申请毕业证书蘑菇街美丽说蘑菇街美丽说唯品会天猫京东。女生买衣服,哪个好godaddy美国GODADDY 域名支持域名别名解析吗?xv播放器下载迅雷看看下载的XV格式的电影用什么播放器可以播放?(没有互联网的情况下)创维云电视功能很喜欢创维云电视,它到底有哪些独特功能?安全漏洞web安全漏洞有哪些网络广告投放怎样在网络上进行广告的投放?怎么上传音乐怎么上传音乐到网上
域名服务 namecheap parseerror me空间社区 免费全能主机 创建邮箱 独享主机 华为云建站 中国域名 lamp是什么意思 学生服务器 服务器防御 免备案jsp空间 葫芦机 酷锐 japanese50m咸熟 九零网络 alexa世界排名 超低价 更多