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1、机械专业中英文文献翻译英文原文CNCMachiningProcessFirst,ourcountry'shistoryofthedevelopmentofnumericalcontrolsystem1.Ourcountrysince1958,byagroupofresearchinstitutes,collegesanduniversitiesandafewstartedtoCNCMachineToolPlantoftheresearchanddevelopmentsystem.Atthattime,duetothelowlevelof
2、domesticelectroniccomponents,suchasthedepartmentofeconomicconstraints,lackofalargerdevelopment.2.Inthereformandopeningup,China'snumericalcontroltechnologygraduallyachievesubstantialdevelopment.After"65"(81----85years)theintroductionofforeigntechnology,"75"(86------90year
3、s)ofthedigestionandabsorptionandthe"EighthFive-YearPlan"(91~1-95years)NationalOrganizationofscientificandtechnological,thatmakesourcountry'sCNCtechnologyhasaqualitativeleapinacceptanceatthattime,throughresearchandidentificationofcountryproductsincludingBeijingEverest'sCh
4、ineseI,centralChina'scentralNCIandafewhigh-endShenyangNationalEngineeringResearchCenterforControlofBlue-I,aswellasotherthroughthe"NationalQualitySupervisionandTestCentermachine"testNCsystemofqualifieddomesticcompaniessuchasNanjing,fourproducts.3.China'sCNCmachinetoolmanu
5、facturingindustryinthe80'shadthestageofrapiddevelopment,manymachinetoolplantproductsfromtraditionalproductstotheNCtransition.But,generallyspeaking,thetechnologicallevelisnothigh,thequalityofthepoor,sointheearly90'sfacingthecountry'seconomyfromaplannedeconomytoamarketecon
6、omyandadjustthetransferwentthroughthemostdifficultyearsoftheDepressionperiod,theproductioncapacityatthattimedownto50%,morethanfourmonthinventory.From1995,"NinthFive-YearPlan"toexpanddomesticdemandfromthecountryafterthemachinetoolmarkettostart,soastoreinforcetheapprovalof
7、importsofCNCequipment,investmentfocusedonsupportforkeynumericalcontrolsystem,equipment,technologiesofCNCequipmenthasplayedasignificantrole,especiallyin1999,thecountry'sdefenseindustrytocivilianindustryandthekeytoputtinginalotoftechnicaldepartmentfunds,toenableCNCequipmen
8、tmanufacturermarketthriving.Three,CNCTechnologyandEquipmentofcarscutCNCLatheMachiningLathetechnologyand
