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时间:2018-07-23
《2011年职称英语冲刺班课件第22讲-理工类》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、大家论坛职称英语http://club.topsage.com/forum-109-1.html大家论坛职称英语版块:http://club.topsage.com/forum-109-1.htmlThesatelliteswillbestrung8alongthreemedium-Earthorbitsat56degreesinclinationtotheequatorandwillprovideglobalcoverage.Thesystemshouldbeoperationalby2008andtheenti
2、reprojectisexpectedto___10___around3.2billionEuros(USD3.6billion).TheEuropeanCommissionhassaidGalileowillprimarilybeusedfortransportationtechnology,scientificresearch,landmanagementanddisastermonitoring.Galileowillprovidetwosignals;astandardcivilianoneandanenc
3、rypted,wide-bandsignal___11___thePublicRegulatedService(PRS)9.ThissecondsignalisdesignedtowithstandlocalizedjammingandwillbeusedbypoliceandmilitaryservicesinEurope.EuropeanCommission____12_____havesaidChinawillnotbegivenaccesstothePRS10.ThefirstGalileosatellit
4、eisscheduledtolaunchlatein2004.Clocksonboard11the_____13____willbesynchronized12through20groundsensorsstations,twocommandcentersand15uplinkstations.Receiversonthegroundwillusetimesignalsfromthesatellitestopreciselycalculatetheir____14____.A“searchandrescue”fun
5、ctionwillalso____15____distresssignals13berelayedthroughtheconstellationofsatellites.词汇:infrastructure['infrə,strʌktʃə(r)]n.基础结构,基础设施encrypt[in'kript]v.把……编码withstand[wið'stænd]v.抵挡;经受住downgrade['daunɡreid]v.使降级jam[dʒæm]v.(信号)干扰unfounded[ʌn'faundid]adj.无事实根据的s
6、ensor['sensə(r)]n.传感器;敏感元件constellation[,kɔnstə'leiʃən]n.(卫星)群集uplink['ʌpliŋk]n.(从地球到通讯卫星的)上行线路,向上传输大家论坛职称英语http://club.topsage.com/forum-109-1.htmlinclination[,inkli'neiʃən]n.倾斜注释:1.GPS:GlobalPositioningSystem全球定位系统2.theGalileosatellitesystem:伽利略人造卫星系统。指以意大利物
7、理学家和天文学家伽利略(1564一1642)命名的人造卫星系统。3.Amoreaccuratecivilianalternative:一种更精确的民用系统。alternative:另一种选择。这里是相对美国军用卫星导航系统而言的民用系统。alternative可以与to连用,又如:Iwantedtogoout,butIhadnomoney.Ihadnoalternativetostayingathome.我想出去,可是没钱:只能呆在家里。4.230mEuros(USD259m):230millionEuros(US
8、D259million):二亿三千万欧元(二亿五千九百万美元)。Euro欧元。USD美元。5.theEuropeanCommission:欧洲贸易委员会6.EuropeanSpaceAgency(ESA):欧洲航天局7.theGalileosatelliteconstellation:伽利略人造卫星群8.strung:string的过去分词形式,意思是:to
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