西电专业英语

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1、一、语法点（）1.分词做后置定语Theinventionhereindescribedwasmadeinthecourseoforunderacontractorsubcontractthereunder,withtheDepartmentoftheAirForce.2.在technique后面多用forOneoftheearliestpriorarttechniquesforjamminganenemyradarcontemplatedthetransmissionofawidebandnoisesignalofsuchgreatamplitudeastosubstantiallyob

2、literatethetruetargetsignalsbeingdisplayedontheradarenemyindicator.3.插入词Itisrecognized,however,thatsuchwidebandnoisetransmissionisobjectionablywastefuloftheavailablejammertransmitterpowerand,moreover,maynotbecompletelyeffectiveinmaskingthetruetargetsignal.4.现在完成进行时强调“一直在进行某项工作”Anotherapproachtoth

3、ejammingproblemhasbeentodeceivetheradarenemyoperatorratherthantorenderhisreceiverineffectualbythesheerbruteforceofanoverpoweringnoisesignal.5.全倒装Itistheprincipalobjectofthepresentinventiontoprovidearadarconfusioncountermeasuresystemincludingmeansfortheproductionofagreatnumberofrealisticfalsetarge

4、tsignalsonanenemyradarindicatoratapparentlyrandomrangesandazimuths.6.由as引导的非限定性定语从句Theseandotherobjectsofthepresentinvention,aswillappearuponthereadingofthefollowingspecification,areachievedinarepresentativeembodimentofthepresentinventionbytheprovisionofawidebandmicrowavesignalreceivercapableofde

5、tectingpulsesradiatedfromthemain,sideandbacklobesoftheenemyradarantenna.7.分词作状语Theselectedanddetectedpulseoutputsfromthewidebandreceiverarethenappliedtoaspecialpulsegeneratorwhichproducesavaryingnumberofoutputpulses,inresponsetoeachoftheappliedpulses,bearingsubstantiallyrandomtimerelationshipsthe

6、rewith.1.分词作定语Thepulsesignalstransmittedbacktotheenemyradarwillbedisplayedontheenemyradarindicatoratsubstantiallyrandomrangesandazimuthstogetherwiththetruetargetsignalwhichisreflectedbythevehiclecarryingthecountermeasuresystem.2.It做形式主语Itwillbeseen,bycomparisonofthetruetargetsignal1withtheotherso

7、fthemultiplicityofdetectedsignals,thatthereisnodistinguishingcharacteristicofthetruesignalwhichwouldfacilitatetheenemyradaroperator’staskindiscriminatingitasagainstalloftheothersignals.3.While表示对比Thenumberofpulsesineac