1/3
文档分类:外语学习

大学英语论文.doc


下载后只包含 1 个 DOC 格式的文档,没有任何的图纸或源代码,查看文件列表

特别说明:文档预览什么样,下载就是什么样。

0/100
您的浏览器不支持进度条
下载所得到的文件列表
大学英语论文.doc
文档介绍:
大学英语论文.docThehistoryoftheelectricvehiclein1873,EnglishmanRobertDavidsonproducedfirstelectricvehiclintheworldwhichispracticaloelectricvehicleRobertDavidsoninventedistruck,long4800mm,wide1800mmo从1880年开始,应用了口J以充放电的二次电池。从一次电池发展到二次电池,这对于当时电动汽车來讲是一次重大的技术变革,由此电动汽车需求量冇了很大捉高。Atthebeginningof1880,applingsecondarycellwhichcanchargeanddischarge.Itishardtoexaggeratetheinflueneeofbattery,fromprimarycelltosecondarycell,whichhashadagreataffectontheworldeconomyJt电动汽车需求量看了很人提Inthelatterhalfofthe19thcenft/zy,electricvehicleisoneofthemostimportantpartsoftransportation,whichhasaddedaremarkablepagetoHumantraffichistory.in1890fintranceandBritain,Thestreetwasdottedwithelectricvehicle.bustionengineisprettymuchundeveloped,sothatthecarisslowandlimitedinrange,,ineurope,theheydayofelectricvehicleisinthelate19th.Ontheotherhand,thereareaninterestinghistoryofdevelopmentoofelectricvehiclewhichcontinuestothepresentand,infact,theelectricvehiclehasbeenaroundforover100years.ThestoryisthatJosephHenry'sinventionofthefirstelectricdirectcurrent(DC)motorin1830,engineersbecameinterestedincreatinganelectricpoweredvehiclethatwouldbeareliablesourceoftransportationbuttheprocesswasnotperfecteduntilmuchlater,afterthecreationofrechargeablebatteriesbytheFrenchengineer,GastonPlante,in1859・FranceandEnglandwerethefirstnationstodeveloptheelectricvehicleinthelate1800s.Itwasnotuntil1895thatAmericansbegantopayattentiontotheelectricveh 内容来自淘豆网www.taodocs.com转载请标明出处.