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美国留学申请：PS范文(机械工程专业)2010-09-2717:14:20来源：留学E路通字号：大|中|小范文1：Mechanicalengineeringisthefoundationofindustry.Itplaysakeyroleinthenationaleconomy.It’sbroadfieldincludinggeneralengineering,aeronautical,chemicalandnuclearengineering,etc.Providesasufficientroomofchoicesformetorealizethedreamofbecomingascientistoramechanicalengineer.ItwaswiththisfactinmindthatIdecidedtochoosemechanicalengineeringasthemajorfieldofstudyforbothundergraduateandgraduatecareeratTsinghuaUniversity.DuringnearlyeightyearsofstudyatTsinghuaUniversity,Icompletedatotalof47coursesinundergraduatestudy,14coursesingraduatestudy.Themajorcoursesthatinterestedmemostincluded:TheoreticalMechanics,StrengthofMaterials,ElasticityandPlasticityMechanicalAnalysisofPlasticDeformationProcesses,TheoryofMetalForming,ComputerLanguageandProgramming,MechanicalDesign,etc…Aftergraduation,IenteredtheFirstHeabyMachineryWorks(innortheastofChina).Duringthisperiod,Ibecamefamiliarwiththedesignandmanufacturingofsomeheavymachines,thusfurtheringmyinterestinmechanicalengineering.Atthesametime,Ifoundthatmanygoodideasofdesigncouldnotbeputintoexistencebecauseofthebackwardnessinrawmaterialqualityandprocessingtechniques.Thisfactimpelledtherelatedareasandmetoconcentratemyresearchinterestonmaterialsscienceandprocessing.Throughcarefulsurvey,Iselectedasubjectaboutthequalitycontrolofheavydiscforgingandtookitasmyresearchsubjectformasterdegree.Afterovertowyearsofinvestigation,Ifinallymadeagreatinnovationintheforgingprocess,makingtheendproductrateincreasefrom50%to90%.Inthecourseofinvestigationandmylaterworkingaftergraduatestudy,Ialsofoundsomeproblemsthatarecommoninmechanicalindustry.Forexample,howdocracksinproductsduringhotmetalworkinggenerateanddevelop?Howtoavoidcracks?Howdonon-metallicinclusionsaffectthepropertiesofmaterials?Howtocontrolthecontent,shapeanddistributionofinclusionsinfinalproducts?Solutiontotheseproblemswillimprovethequalityofmanykindsofproducts.Buttheyareoftendifficulttobesolvedbecausetheyincludeknowledgeofmanydisciplinesandrequiremanynewresearchmethods.IfeelthatwhatIhavelearnedisfarfromsufficienttotacklealltheproblems.ThusIhavedecidedtocontinuemyeducationbypursuingadoctoraldegreeinmechanicalengineeringinahighlyindustrializedcountryliketheUnitedStates.IplantocompletemydegreeobjectiveI3to5yearandhopethatIwillbeabletofurthermyknowledgeIareasincludingSolidMechanics,MaterialsScienceandProcesses,CAD/CAM,etc…Aftercompletingmygraduatestudy,Iwillreturntocontributemylearningtomycountry.Iplantoworkasaresearcherofateacherataninstituteorauniversity.范文2：AnexperiencedengineerofsecurityprintingwithChina’sCentralBank,InowwouldliketoscalehigherintellectualheightsbypursuingPh.D.studiesinmechanicalengineeringatyouruniversity.IbelievethatmystrongbackgroundinCADhasadequatelypreparedmetoembark(从事)onthisendeavor(努力).Ihavebeenwonk（用功的学生）ofChina,aChineseversionoftheFederalReserve,atitsuniqueresearchinstituteofsecurityprinting,withtheresponsibilityofdesigningtheChinesecurrencyandthemachinerytoproduceit.Byengagingmeinavarietyofprojects,thejobaffordedmeampleexposuretocutting-edgedevelopmentsincomputertechnologies,particularlyinCADsoftware.Ihave,forexample,recentlyredevelopedapurchasedCAD(ComputerAidedDesign)softwaretomakeitmoresuitableforourownpurposes.Byaddingourownpart/subassemblytothedatabaseandmakeourowndrawingcri...