FranklinDelanoRooseveltwasthe32ndPresidentoftheUnitedStatesandacentralfigureinworldeventsduringthemid-20thcentury,nlyAmericanpresidentelectedtomorethantwoterms,efeatedincumbentRepublicanHerbertHooverinNovember1932,'ingcloselywithWinstonChurchillandJosephStalininleadingtheAlliesagainstGermanyandJapaninWorldWarII,hediedjustasvictorywasinsight.
罗斯福富兰克林是美国的第32届总统，在二十世纪中期的世界事件中是一个核心人物，他领导美国期间美国经历了一次世界性经济危机和一次世界大战。作为美国历史上唯一一个连任两期的`总统，他将美国的政客们联合起来，并且这种团结持续了几十年。罗斯福与1932年十一月，大萧条最严重的时期，击败了当时在任的共产党人和波特胡文。参考资料：得作文_罗斯福乐观与积极的态度在鼓舞国民士气上发挥了巨大的作用。在二次世界大战期间，与文森特撒切尔和约瑟夫斯大林密切合作领导联盟对抗德国和日本，就是胜利在即的时候他不幸去世。
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1868heinventedarecordingdevicetoselltoTaiwanvotesCongress,onfirstinventedsothathedidnotfindthemarketmoreattentiontotherelevanceoftheinvention.1869,provedtheindicatorscablecompaniestelegraph,therecognitionbythemanagerofthecompany,employed300USdollarsmonthlysalary(whichatthetimewasveryhighsalary).1870,movedtoNewJerseytobeginhisefficientinventionperiod.1874improvedtypewriters.1876,tothelatter.
BellinventedthetelephonewithacarbonReaproute,andraisedthewordsbeep.1876,elaboratory,hebrokethepreviousindividualscientiststoengageinresearchtradition,organizedagroupofprofessionals(includingN.
Teslaandothers),andthesubjectofhisassignment,acommoncommitmenttotheinvention,thuscreatingthecorrectwaytomodernscientificresearch.1877,inventedgramophone,whichmakeshimoriginal.1878,thestudybeganincandescentlampinthe10monthsaftermanyfailures,October21,1879inthesuccessfullocationofincandescencelightlightscarbonsilk,stablelocationbetweentwodays.1882,inNewYorkpearlStreetBlockcommunalfirewastheworld'ssecondplant,builtinNewYorkUrbanElectriclighting,ightingachievementhasnotonlygreatlyimprovedtheworkingconditionsofproduction,butalsoheraldaneraofdailylifeelectrificationforthcoming.1883,Edisonbulbsinavacuumtest,accidentallydiscoveredthecold,phenomenonwascalledtheEdisoneffect,becomeelectrontubeandelectronicindustries.1887,fromXiaolangovernment,andinthesameyearinalargercity,thelaboratoryequipmentisalsoupdatedthefamousEdisonLaboratory(laterknownastheinventionfactory),accordingtoG.
Schoolinvention,produceditsowncamera.1914,ge,hisinventionsandinnovationsincludingbatteries,cementmixer,soundrecordingtelephone,double-andmulti-typecablesystem,tWorldWar,heservedasChairmanoftheTechnicalAdvisoryCommitteetoguidetorpedoesandanti-submarineequipmentresearch,isend,theUnitedStatesgovernmentin1920conferredonhimtheDistinguishedServicesMedalserving,theFrenchgovernmentawardedhonorarymedalstohisCorpsspaces.1928,ughouttheirentirelifecycle,Edisonandhislaboratoryreceived1,oninventedmanylife,butheisafterallasystemofscientificknowledge,e19thcentury,theexchangeoftransmissionsystemhasemerged,buthestillinsistedondirectcurrenttransmission,andwithG.
WestinghouseNiehausfiercecompetitionoccurredlostNiagarahydropowerprojectcontracts;
DengYapingwasbornon2ndofJune,1983,1997,1993to1998,shebecamethenumberonewomen'ssinglesplayerintheITTF.
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