机械外文资料原文及译文Word文档格式.docx
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机械外文资料原文及译文Word文档格式.docx
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外文资料原文及译文
学院:
机电工程学院
专业:
机械设计制造及其自动化
班级:
6406105
学号:
200604061158
姓名:
丁彦铭
Mechanicalengineering1.Theporfileofmechanicalengineering
Engingeeringisabranchofmechanicalengineerig,itstudiesmechanicalandpowergenerationespeciallypowerandmovement.
2.Thehistoryofmechanicalengineering
18thcenturylaterperiods,thesteamengineinventionhasprovidedamainpowerfountainheadfortheindustrialrevolution,enormouslyimpelledeachkindofmechznicalbiting.Thus,animportantbranchofanewEngineering–separatedfromthecivilengineeringtoolsandmachinesonthebranch-developedtogetherwithBirminghamandtheestablishmentoftheAssociantionofMechanicalEngineersin1847hadbeenofficiallyrecognized.Themechanicalengineeringalreadymainlyusedinbytrialanderrormethodmechanicapplicationtechnologicaldevelopmentintoprofessionalengineerthescientificmethodofwhichintheresearch,thedesignandtherealmofproductionused.Fromthemostbroadperspective,thedemendcontinuouslytoenhancetheefficienceyofmechanicalengineersimprovethequalityof
work,andaskedhimtoacceptthehistoryofthehighdegreeofeducationandtraining.Machineoperationtostressnotonlyeconomicbutalsoinfrastructurecoststoanabsoluteminimun.
3.Thefieldofmechanicalengineering
Thecommoditymachinerydevelopmentinthedevelopcountry,inthehighlevelmateriallifeverygreatdegreeisdecidedeachkindofwhichcanrealizeinthemechanicalengineering.Mechanicalengineersunceasinglywillinventthemachinenextlifetoproducethecommodity,unceasinglywilldeveloptheaccuracyandthecomplexitymoreandmorehighmachinetoolsproducesthemachine.Themaincluesofthemechanicaldevelopmentis:
Inordertoenhancetheexcellentinqualityandreasonableinpriceproducetoincreasetheprecisionaswellastoreducetheproductioncost.Thisthreerequirementspromotedthecomplexcontrolsystemdevelopment.Themostsuccessfulmachinemanufactureisitsmachineandthecontrolsystemclosefusion,whethersuchcontrolsystemisessentiallymechanicalorelectronic.Themodernizedcarenginproductiontransmissionline(conveyerbelt)isaseriesofcomplexproductionscraftmechanization
verygoodexample.Thepeopleareintheprocessofdevelopmentinordertoenablefurtherautomationoftheproductionmachinery,theuseofacomputertostoreandhandlelargevolumesofdata,thedataisamultifunctionalmachinetoolsnecessaryfortheproductionofspareparts.Oneoftheobjectivesistofullyautomatedproductionworkshop,threerotation,butonlyoneofficerperdaytooperate.Thedevelopmentofproductionformechanicalmachinerymusthaveadequatepowersupply.Steamenginefirstprovidedtheheattogeneratepowerusingpracticalmethodsintheoldhuman,windandhydropower,anincreaseofengin.Newmechanicalengineeringindustryisoneofthechallengesfacedbytheinitialincreasethermaleffciencyandpower,whichisasbigsteamturbineandthedevelopmentofjointsteamboilersbasicallyachieved.20thcentury,turbinegeneratorstoprovideimpetushasbeensustainedandrapidgrowth,whilethermalefficiencyissteadygrowth,andlargepowerplantsperkWcapitalconsumptionisalsodeclining.Finally,mechanicalengineershavenuclearenergy.Thisrequirestheapplicationofnuclearenergyparticularlyhighreliabilityandsecurity,
whichrequiressolvingmanynewproblems.Largepowerplantsandthenuclearpowerplantcontrolsystemshavebecomehighlycomplexelectroonics,fluid,electricity,waterandmechanicalpartsnetworksAllinallareasrelatedtothemechanicalengineers.Smallinternalcombustionengine,bothtothetype(petrolanddieselmachines)orrotary-type(gasturbinesandMongKerrmachine),aswellastheirbroadapplicationinthefieldoftransportshouldalsoduetomechanicalenginerrs.Throughoutthetransport,bothintheairandspace,orintheterrestrialandmarine,mechanialengineerscreatedavarietyofequipmentandpowerdevicestotheirincreasingcooperationwithelectricalengineers,especiallyinthedevelopmentofapproprationcontrolsystems.Mechanicalengineersinthedevelopmentofmilitaryweaponstechnologyandcivilwar,needsasimilar,thoughitspurposeistoenhanceratherthandestroytheirproductivity.However.Warneedsalotofresourcestomaketheareaoftechonlogy,manyhaveafar-reachingdevelopmentinpeacetimeefficiency.Jetaircraftandnuclearreactorsarewellknownexamples.
TheBiologicalengineering,mechanicalengineeringbiotechnologyisarelativelynewanddifferentareas,itprovidesforthereplacementofthemachineorincreasethebodyfunctionsaswellasformedicalequipment.Artficiallimbshavebeendevelopedandhavesuchastrongmovementandtouchresponsefunctionofthehumanbody.Inthedevelopmentofartificialorgantransplantisrapid,complexcardia
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