Superconductors,asthenamesuggests,areconductorsthatdonotdissipateenergyafterpassingacurrent.AftertheDutchscientistOnnesdiscoveredthesuperconductivityofmercuryin1911,peopleonlychangedthetemperatureinth...
OverviewThefirstgenerationoflaseranti-counterfeitingtechnologyismainlyusedtomakelaser-moldedholographicimageanti-counterfeitinglabels.Becauseofthepoormonochromaticityandpoorcoherenceofordinarylightsou...
BackgroundThebirthofSDHtechnologyhasitsinevitability.Withthedevelopmentofcommunication,theinformationrequiredtobetransmittedisnotonlyvoice,butalsotext,data,imagesandvideos.Coupledwiththedevelopmentofd...
Thecellbodyofthehorizontalcellislocatedoutsidetheinnercorelayerandsendsoutmanyhorizontalbranchesextendingintotheoutermeshlayertoformsynapseswithrodcells,bipolarcellsandinterreticularcells.Therearegapj...
История Започвайки от октомври 2002 г., годишната селекция на CCTV за цифри на годината "Moving China" предизвика силни отражения в обществото. От слугата на народа Джън Пеймин, космическия герой Ян Лиуей, едноръкия герой Динг Си...
IntroductionLanguageistheessentialcharacteristicthatdistinguisheshumansfromotheranimals.Amongalllivingthings,onlyhumanshavetheabilitytospeak.Avarietyofhumanintelligencesarecloselyrelatedtolanguage.Hum...
SynonymouscopperplategenerallyreferstocopperyuanBasicinformationTheoriginofcopperyuanTheearliestcoppercoin(machinedcoppercoin)inChinawasborninthethirteenthyearofGuangxubyZhangZhidong,thegovernorofGuan...
RawmaterialcharacteristicsNaturalfiberThenaturalfibercontainedinsilkismainlysilkfiber,whichisacontinuouscoagulationofthesilkliquidsecretedbythecocoonwhenthecocoonisformed.Longfiber,alsoknownasnaturals...
ThesynonymGeorgeEastmangenerallyreferstoGeorgeEastman.AnexcellenttalentPersonalInformationEastmanwasborninWaterville,NewYork,USA(Waterville)village.ItistheyoungestofthethreechildrenofMariaKilbournandG...
DefinitionInformationManagement(InformationManagement,IM)isthecomprehensiveuseoftechnological,economic,policy,legalandhumanisticmethodsandMeansinordertocontrolinformationflow(includinginformalinformat...
OverviewDecodingisthereverseprocessofencoding.Duringencoding,eachbinarycodeisassignedaspecificmeaning,thatis,itrepresentsacertainsignalorobject.Theprocessof"translating"thespecificmeaningofthecodestat...
WorkingprincipleRollingballmouse:Therubberballisdriventothegratingwheelwithlight-emittingdiodesandphototransistorwaferpulsesignalsensor.Opticalmouse:Alightsourcepulsesignalsensorwithlight-emittingsemi...
DevelopmenthistoryThebuddingeraThehistoryofNokiabeganin1865.In1865,miningengineerFredichIdestamestablishedawoodpulpfactorybyariverinTampere,Finland.ThefactorywaslocatedatthejunctionofFinlandandtheRuss...
История на разпространението на династията Танг Първо откритие през 627 г., в Ченкангшан, имението Фенксианг, Шанси (в Бейхан, Шигушан, град Баоджи, старият пастир откри 10 странни гранитни блока. Тези огромни каменни тела са оформени като барабани, ро...