简介：在这份报纸，square-integrableR3和R7上的珍视Octonion的功能空格被分解成奥克托尼恩·哈迪的直接的和并且结合强壮的空格，并且上面的一半上的square-integrableOctonion函数空格空格R+4并且R+8直接被分解成无穷第一个部件只是OctonionBergman空格的在subspaces的和。R3和R7上的奥克托尼恩·哈迪空格被描绘。

简介：Searchoutallthelistedwordsinthegrid.

简介：Thetheoreticalframeworkofvisualsimulationinvirtualrealityisdiscussed.Thenewconceptofvisualimagespaceissupposed.Onthebasisofvisualimagespace,invisualperceptivesense,VRisconsideredasaspatialsimulation.Theobjectiveofthespatialsimulationistotransformphysicalspacetovisualimagespace.Last,theprototypesystem,surveying&mappingvirtualReality(SMVR),isdeveloped,andthespacesimulationaboveisrealized.ByuseofSMVR,thereal3Drepresentation,3Dvisualanalysis,virtualplananddesignscanbeimplemented.

简介：10月，“神舟十一号”飞船载着两名航天员进入“天宫二号”空间实验室．开启了我国航天史上最长的太空驻留。

简介：Manypeoplelovetotravelonvacation.Today（1.越来越多的）travelersinChinalikespendingtimewalkinginthemountains,orswimminginthewater,orvisiting（2.名胜古迹）.（3.他们中一些人）wanttogosomewherespecial.Theywouldliketogosomeplaceanyonehasneverbeenbefore.

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简介：TaoJianzhong,astudentofscientist'QianXuesen,isanexpertonaerospace(航空航天).Hegiveslessonsatourschool.Look,everyoneislisteningattentively(专注地)!

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简介：TheWeylcurvatureofaFinslermetricisinvestigated.ThiscurvatureconstructedfromRiemannaincurvature.ItisanimportantprojectiveinvariantofFinslermetrics.TheauthorgivesthenecessaryconditionsonWeylcurvatureforaFinslermetrictobeRandersmetricandpresentsexamplesofRandersmetricswithnon-scalarcurvature.AglobalrigiditytheoremforcompactFinslermanifoldssatisfyingsuchconditionsisproved.ItisshowedthatforsuchaFinslermanifold,ifRicciscalarisnegative,thenFinslermetricisofRanderstype.

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简介：Sincetheearlydaysofmannedspaceflight,hazardouseffectsofthespaceenvironmentonlivingorganismshavebeendisputed.WiththecontinuousmanningoftheInternationalSpaceStation,theplannedChi-nesespacestation,andrenewedinterestinreturningtotheMoonandsendingmannedflightstoMars,identifyingandaddressingthepotentialoutcomesoflong-termspaceexposuresiscriticallyimportant.

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简介：Roughsetisanewapproachtouncertaintiesinspatialanalysis.Inthispaper,roughsetsymbolsaresimplifiedandstandardizedintermsofroughinterpretationandspecializedindication.Roughspatialentitiesandtheirtopologicalrelationshipsarealsoproposedinroughspace,thusauniversalintersectedequationisdeveloped,androughmembershipfunctionisfurtherextendedwiththegrayscaleinourcasestudy.Wecompletethreeworks.First,asetofsimplifiedroughsymbolsisadvancedonthebasisofexistingroughsymbols.Second,roughspatialentityisputforwardtostudytherealworldasitis,withoutforcinguncertaintiesintocrispset.Third,roughspatialtopologicalrelationshipsarestudiedbyusingroughmatrixandtheirfigures.Therelationshipsaredividedintothreetypes,crispentityandcrispentity(CC),roughentityandcrispentity(RC),androughentityandroughentity(RR).Auniversalintersectedequationisfurtherproposed.Finally,themaximumandminimummapsofriverthematicclassificationaregeneratedviaroughmembershipfunctionandroughrelationshipsinourcasestudy.

简介：Inthispaper,theauthorsobtainacharacteristicthatacompleteRiemannianmanifoldturnsintoahyperbolicspaceform.