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Precision guided weapon
13/05/2022 690
Precision guided weapon

Developmenthistory1.EarlyguidedweaponsThefirstappearanceofguidedweaponswasduringtheSecondWorldWar,whentheBritishAirForcefirstappearedonMay12,1943.Thedaily"Freedom"patrolbomberthrewasound-seekingtorped...

books
12/05/2022 686
books

WordconceptsBasicexplanation[books]Thegeneraltermforbooksboundintobooks.Militarybooks.BooksprintedonplateshavenotyetbeenpromotedbytheTangpeople.——Song·ShenKuo,"MengxiBiTan·LakeBoard"Citation...

political system
12/05/2022 642
political system

SynonymsThetermssimilartothepoliticalsystemalsoinclude"regimeform","stateform","governmentform","regimeorganizationform","statestructureform"and"Governmentsystem",theseareallclassifiedtermsforpolitics...

Symmetric Algorithm
11/05/2022 511
Symmetric Algorithm

PrincipleTheencryptionanddecryptionofthesymmetricalgorithmisexpressedas:Ek(M)=CDk(C)=MSymmetricalgorithmscanbedividedintotwocategories.Analgorithmthatonlyoperatesonasinglebit(sometimesabyte)intheplain...

Digital signal
11/05/2022 555
Digital signal

IntroductionTheinformationagehascomewithoutnotice.Wearesurroundedbyvarioussignalsallthetime.Theessenceofthesignalisthephysicalquantitythatrepresentsthemessage(information),suchascommonInthesinusoidale...

Behavioral Learning Theory
10/05/2022 623
Behavioral Learning Theory

ConceptBehavioristsbelievethatlearningistheconnectionbetweenstimuliandresponse.Theirbasicassumptionisthatbehavioristhelearner’sresponsetoenvironmentalstimuli.Theyregardtheenvironmentasastimulus,theacc...

storage card
10/05/2022 726
storage card

MMCseriesMMCDuetothelargesizeoftraditionalCFcards,InfineonandSanDiskjointlylaunchedanewmemorycardproductin1997MultiMediaCard(MMCcardforshort).ThesizeoftheMMCcardis32mm×24mm×1.4mm,witha7-pininterfacean...

Circuit switched network
09/05/2022 579
Circuit switched network

ClassificationTherearetwomaintypesofcircuit-switchednetworks,publicswitchedtelephonenetwork(PSTN)andintegratedservicesdigitalnetwork(ISDN),whichwillbeintroducedseparatelybelow.PublicSwitchedTelephoneN...

Carl Zeiss
09/05/2022 620
Carl Zeiss

>EarlydaysIn1846,attheageof30,CarlZeissestablishedaprecisionopticalinstrumentfactoryinJenaandproduceditin1847Outofhisfirstmicroscope.Since1866,withtheassistanceofErnstAbbeandOttoSchott,theZeissfactory...

Microphone
08/05/2022 797
Microphone

BriefintroductionThemicrophoneisoneoftheimportantpartsofthetelephone.Itcanconvertsoundintovoicecurrent,soitisanacoustic-electricconversiondevice.Microphonesaregenerallydividedintotwocategories,namelyl...

Organic synthetic materials
08/05/2022 625
Organic synthetic materials

IntroductionTherearemanytypesofsyntheticmaterialsfororganicsyntheticmaterials.Syntheticplastics,syntheticfibers,andsyntheticrubbersarewhatweusuallycallthethreesyntheticmaterials;mainlyreferstothesynth...

Surface roughness
07/05/2022 603
Surface roughness

Synonymsurfacefinishgenerallyreferstosurfaceroughness.DevelopmentInordertostudytheinfluenceofsurfaceroughnessontheperformanceofpartsandtheneedtomeasuresurfacemicroscopicunevenness,fromthelate1920stoth...

megahertz
07/05/2022 608
megahertz

IntroductionThebasicunitoffluctuatingfrequencyisHertz,whichisbasedonthethousand-carryingsystem;1MHzisequivalentto1000kilohertz(KHz),whichis10tothe6thpowerofHz.Itisworthnotingthatmegahertzisjustadefini...

Public telephone
06/05/2022 701
Public telephone

ConceptAkindofartificialtelephoneexchangethatisusedbythetelephoneofficetoprovidetelephoneuserswithcallpower.Itappearedinthelate19thcentury.ChinastartedtouseitinBeijingin1910.Duetothedevelopmentoftheap...

Math tools
06/05/2022 718
Math tools

MainfunctionsCurrently,themainfunctionsof"MathematicsTools"includealargenumberofcommonlyusedstaticmathematicalgraphicsandsymbols."MathematicsTools"providesalargenumberofcommonlyusedmathematicalsymbols...