外文翻译--新的封闭式并联迷你机器人的直接运动学正解.doc外文翻译--新的封闭式并联迷你机器人的直接运动学正解.doc

收藏 分享

资源预览需要最新版本的Flash Player支持。
您尚未安装或版本过低,建议您

外文资料CLOSEDFORMDIRECTKINEMATICSSOLUTIONOFANEWPARALLELMINIMANIPULATORINRECENTYEARS,MANYRESEARCHERSHAVESHOWNAGREATDEALOFINTERESTINSTUDYINGPARALLELMANIPULATORSSUCHMECHANISMSAREMOSTSUITABLEFORAPPLICATIONSINWHICHTHEREQUIREMENTSFORACCURACY,RIGIDITY,LOADTOWEIGHTRATIO,ANDLOADDISTRIBUTIONAREMOREIMPORTANTTHANTHENEEDFORALARGEWORKSPACETHEFAMOUSSTEWARTPLATFORMSTEWART,1965ISPROBABLYTHEFIRSTSIXDEGREEOFFREEDOMSIXDOFPARALLELMECHANISMWHICHHASBEENSTUDIEDINTHELITERATUREITCONSISTSOFAMOVINGPLATFORMANDABASEWHICHARECONNECTEDBYMEANSOFSIXINDEPENDENTLIMBSMANYRESEARCHERSHAVECONSIDEREDTHESTEWARTPLATFORMASAROBOTMANIPULATOREG,FICHTERANDMACDOWELL,1980;HUNT,1983;YANGANDLEE,1984;FICHTER,1986OTHERTYPESOFSIXDOFPARALLELMANIPULATORSHAVEBEENINTRODUCEDANDSTUDIEDINLITERATUREEG,KOHLIETAL,1988;HUDGENSANDTESAR,1988;TSAIANDTAHMASEBI,1991AWALDRONANDHUNT1987DEMONSTRATEDTHATKINEMATICBEHAVIOROFPARALLELMECHANISMSHASMANYINVERSECHARACTERISTICSTOTHATOFSERIALMECHANISMSFOREXAMPLE,DIRECTKINEMATICSOFAPARALLELMANIPULATORISMUCHMOREDIFFICULTTHANITSINVERSEKINEMATICS;WHEREAS,FORASERIALMANIPULATOR,THEOPPOSITEISTRUEDIEUDONNEETAL1972APPLIEDNEWTONRAPHSONSMETHODTOSOLVEDIRECTKINEMATICSOFAMOTIONSIMULATORIDENTICALTOTHESTEWARTPLATFORMBEHI1988USEDASIMILARTECHNIQUETONUMERICALLYSOLVETHEDIRECTKINEMATICSPROBLEMOFAPARALLELMECHANISMSIMILARTOTHESTEWARTPLATFORMGRIFFISANDDUFFY1989ASWELLASNANUAETAL1990STUDIEDDIRECTKINEMATICSOFSPECIALCASESOFSTEWARTPLATFORM,INWHICHPAIRSOFSPHERICALJOINTSARECONCENTRICONEITHERTHEPLATFORMORBOTHTHEBASEANDTHEPLATFORMTHEYWEREABLETOREDUCETHEPROBLEMTOANEIGHTHDEGREEPOLYNOMIALINTHESQUAREOFASINGLEVARIABLETOTALDEGREEOFSIXTEENHOWEVER,ASMENTIONEDBYGRIFFISANDDUFFY1989,PAIRSOFCONCENTRICSPHERICALJOINTSMAYVERYWELLPRESENTDESIGNPROBLEMSLINETAL1990SOLVEDDIRECTKINEMATICSOFANTHERCLASSOFSTEWARTPLATFORMS,INWHICHTHEREARETWOCONCENTRICSPHERICALJOINTSONTHEBASEANDTWOMORECONCENTRICSPHERICALJOINTSONTHEPLATFORMTHELATTERCLASSOFSTEWARTPLATFORMSSUFFERFORMLACKOFSYMMETRYANDCONCENTRICSPHERICALJOINTSARESTILLNEEDEDINTHEIRCONSTRUCTIONOTHERRESEARCHERHAVEALSOBEENABLETOOBTAINCLOSEDFORMSOLUTIONSFOROTHERSPECIALFORMSOFTHESTEWARTPLATFORMEG,INNOCENTIANDPARENTICASTELLI,1990;PARENTICASTELLIANDINNOCENTI,1990ITISWORTHMENTIONINGTHAT,TOTHEBESTOFOURKNOWLEDGE,NOONEHASYEBEENABLETOOBTAINACLOSEDFORMDIRECTKINEMATICSSOLUTIONFORTHEGENERALSTEWARTPLATFORMWITHSIXINDEPENDENTLIMBSRECENTLY,RAGHAVAN1991USEDANUMERICALTECHNIQUEKNOWNASPOLYNOMIALCONTINUATIONTOSHOWTHATTHEREAREFORTYSOLUTIONSFORTHEDIRECTKINEMATICSOFTHESTEWARTPLATFORMOFGENERALGEOMETRYMURTHYANDWALDRON1990A,1990BHAVEBEENABLETORELATETHEDIRECTKINEMATICSOFSOMEPARALLELMECHANISMSTOTHEINVERSEKINEMATICSOFTHEIRSERIALDUALMECHANISMSINTHISPAPER,CLOSEDFORMDIRECTKINEMATICSOLUTIONFORASIXDOFPARALLELMINIMANIPULATORISPRESENTEDTHEMINIMANIPULATORISONEOFTHEHIGHSTIFFNESSANDHIGHRESOLUTIONMECHANISMSINTRODUCEDBYTSAIANDTAHMASEBI1991A,1991BFORFINEPOSITIONANDFORCECONTROLINAHYBRIDSERIALPARALLELMANIPULATORSYSTEM,ITWILLBESHOWNTHATDIRECTKINEMATICSOFTHEMINIMANIPULATORINVOLVESSOLVINGANEIGHTHDEGREEPOLYNOMIALINTHESQUAREOFASINGLEVARIABLELETSUBSCRIPTIINTHISSECTIONANDTHERESTOFTHISWORKREPRESENTNUMBERS1,2,AND3INACYCLICMANNERTHEMINIMANIPULATORCONTAINSTHREEINEXTENSIBLELIMBS,PIRITHELOWERENDOFEACHLIMBISCONNECTEDTOASIMPLIFIEDFIVEBARLINKAGEDRIVERANDCANBEMOVEDFREELYONTHEBASEPLATETHEDESIREDMINIMANIPULATORMOTIONISOBTAINEDBYMOVINGTHELOWERENDSOFITSTHREELIMBSONITSBASEPLATETWODOFUNIVERSALJOINTSCONNECTTHELIMBSTOTHEMOVINGPLATFORMTHELOWERENDSOFTHELIMBSARECONNECTEDTOTHEDRIVERSTHROUGHTHREEMOREUNIVERSALJOINTSNOTETHATONEOFTHEAXESOFTHEUPPERUNIVERSALJOINTISCOLLINEARWITHTHELIMB,WHILETHEOTHERAXISOFTHEUPPERUNIVERSALJOINTASWELLASONEOFTHEAXESOFTHELOWERUNIVERSALJOINTAREALWAYSPERPENDICULARTOTHELIMBTHISARRANGEMENTISKINEMATICALLYEQUIVALENTTOALIMBWITHASPHERICALJOINTATITSLOWERENDANDAREVOLUTEJOINTATITSUPPERENDPOINTCIISTHEOUTPUTPOINTOFADRIVERATPOINTDI,THEREISANACTUATORONEACHSIDEOFTHEBASEPLATETODRIVELINKSDIAIANDDIBITHESIMPLIFIEDFIVEBARDRIVERSARECOMPLETELYSYMMETRICASARESULT,COORDINATIONBETWEENACTUATORROTATIONSCANBEEASILYACCOMPLISHEDNAMELY,ANGULARDISPLACEMENTOFANOUTPUTPOINTCIISOBTAINEDBYEQUALACTUATORROTATIONS,ANDITSRADIALDISPLACEMENTISOBTAINEDBYEQUALANDOPPOSITEACTUATORROTATIONSSIMPLIFIEDFIVEBARLINKAGESANDINEXTENSIBLELIMBSAREUSEDTOIMPROVEPOSITIONALRESOLUTIONANDSTIFFNESSOFTHEMINIMANIPULATORSINCETHEMINIMANIPULATORACTUATORSAREBASEMOUNTED;HIGHERPAYLOADCAPACITY,SMALLERACTUATORSIZES,ANDLOWERPOWERDISSIPATIONCANBEOBTAINEDINADDITION,TOACHIEVEEVENLOADDISTRIBUTION,THEMINIMANIPULATORISMADECOMPLETELYSYMMETRICTHEEQUIVALENTLIMBCONFIGURATIONWILLBEUSEDFORANALYSIS,BECAUSETHESPHERICALANDREVOLUTELIMBISEASIERTOANALYZETHANTHEUNIVERSALANDUNIVERSALLIMBTHELOWERENDSOFTHELIMBSARECONNECTEDTOTWODOFDRIVERSTHEUPPERENDOFTHELIMBSARECONNECTEDTOTHEPLATFORMTHROUGHREVOLUTEJOINTSNOTETHATTHEJOINTAXESATPOINTSAREPARALLELTOLINESLETUSDEFINETHEFIXEDBASEREFERENCEFRAMEANDTHEMOVINGPLATFORMREFERENCEFRAMEINDETAILTHEORIGINOFTHEBASEREFERENCEFRAMEISPLACEDATTHECENTROIDOFTRIANGLEDIDZD3THEPOSITIVEXAXISISPARALLELTOANDPOINTSINTHEDIRECTIONOFVECTORDZD3THEPOSITIVEYAXISPOINTSFROMPOINT0TOPOINTDLTHEZAXISISDEFINEDBYTHERIGHTHANDRULESIMILARLY,THEORIGINOFTHEPLATFORMREFERENCEFRAMEISPLACEDATTHECENTROIDOFTRIANGLEP1PZP3THEPOSITIVEUAXISISPARALLELTOANDPOINTSINTHEDIRECTIONOFVECTORPZP3THEPOSITIVEVAXISPOINTSFROMPOINT0TOPOINTP1THEWAXISISDEFINEDBYTHERIGHTHANDRULETOKEEPTHEMINIMANIPULATORSYMMETRIC,BOTHTRIANGLESD1DZD3ANDP1PZP3AREMADEEQUILATERALINTHISPAPER,CLOSEDFORMSOLUTIONFORDIRECTKINEMATICSOFANEWTHREELIMBEDSIXDEGREEOFFREEDOMMINIMANIPULATORISPRESENTEDITISSHOWNTHATTHEFORDIRECTKINEMATICSOFTHEMINIMANIPULATORISSIXTEENTOMAXIMUMNUMBEROFSOLUTIONSOBTAINTHESESOLUTIONS,ONLYANEIGHTHDEGREEPOLYNOMIALINTHESQUAREOFASINGLEVARIABLEHASTOBESOLVEDITISALSOPROVEDTHATTHESIXTEENSOLUTIONSAREEIGHTPAIRSOFREFLECTEDCONFIGURATIONSWITHRESPECTTOTHEPLANEPASSINGTHROUGHTHELOWERENDSOFTHETHREELIMBSTHERESULTSOFANUMERICALEXAMPLEAREVERIFIEDBYANINVERSEKINEMATICSANALYSISTHISRESEARCHWASSUPPORTEDINPARTBYTHENSFENGINEERINGRESEARCHCENTERPROGRAM,NSFDCDR8803012THEFIRSTAUTHORGRATEFULLYACKNOWLEDGESTHESUPPORTOFNASA/GODDARDSPACEFLIGHTCENTERSUCHSUPPORTSDONOTCONSTITUTEENDORSEMENTSOFTHEVIEWSEXPRESSEDINTHEPAPERBYTHESUPPORTINGAGENCIESWORKSPACEANALYSISANDOPTIMALDESIGNOFA3LEG6DOFPARALLELPLATFORMMECHANISMANEWCLASSOFSIXDEGREEOFFREEDOMDOFSSPATIALPARALLELPLATFORMMECHANISMISCONSIDEREDINTHISPAPERTHEARCHITECTURECONSISTSOFAMOBILEPLATFORMCONNECTEDTOTHEBASEBYTHREEIDENTICALKINEMATICCHAINSUSINGFIVEBARLINKAGESRECENTINVESTIGATIONSSHOWEDTHATPARALLELMECHANISMSWITHSUCHATOPOLOGYFORTHELEGSCANBEEFFICIENTLYSTATICALLYBALANCEDUSINGONLYLIGHTELASTICELEMENTSTHISPAPERFOLLOWSUPWITHAWORKSPACEANALYSISANDOPTIMIZATIONOFTHEDESIGNOFTHATPARALLELMECHANISMMORESPECIFICALLY,CONSIDERINGAPOSSIBLEINDUSTRIALAPPLICATIONOFTHEARCHITECTUREASAPOSITIONINGANDORIENTINGDEVICEOFHEAVYLOADS,ANOPTIMIZATIONPROCEDUREFORTHEMAXIMIZATIONOFTHEVOLUMEOFTHETHREEDIMENSIONAL3DCONSTANTORIENTATIONWORKSPACEOFTHEMECHANISMISFIRSTPRESENTEDASTHEMECHANISMCOULDALSOHAVEGREATPOTENTIALASAMOTIONBASEFORFLIGHTSIMULATORS,WEDEVELOPHEREADISCRETIZATIONMETHODFORTHECOMPUTATIONANDGRAPHICALREPRESENTATIONOFANEWWORKSPACEWITHCOUPLEDTRANSLATIONALANDROTATIONALDOFSTHISWORKSPACECANBEDEFINEDASTHE3DSPACEWHICHCANBEOBTAINEDWHENGENERALIZEDCOORDINATESX,YANDTORSIONANGLEΨINTHETILTANDTORSIONANGLESPARAMETRIZATIONARECONSTANTASECONDPROCEDUREISTHENPRESENTEDFORTHEMAXIMIZATIONOFTHEVOLUMEOFTHISSECONDSUBSETOFTHECOMPLETEWORKSPACEFORBOTHAPPROACHES,OURPURPOSEISTOATTEMPTANOPTIMALDESIGNOFTHEMECHANISMBYMAXIMIZINGTHEVOLUMEOFTHEASSOCIATED3DCARTESIANREGIONTHATISFREEOFCRITICALSINGULARITYLOCIDETERMINATIONOFTHEWRENCHCLOSUREWORKSPACEOF6DOFPARALLELCABLEDRIVENMECHANISMSAPARALLELCABLEDRIVENMECHANISMCONSISTSESSENTIALLYOFAMOBILEPLATFORMCONNECTEDINPARALLELTOABASEBYLIGHTWEIGHTLINKSSUCHASCABLESTHECONTROLOFLENGTHOFTHECABLESALLOWSTHECONTROLOFTHEPOSEOFTHEPLATFORMFORINSTANCE,AMECHANISMDRIVENBYEIGHTCABLESISSHOWNINFIG1PARALLELCABLEDRIVENMECHANISMSHAVESEVERALADVANTAGESOVERCONVENTIONALRIGIDLINKMECHANISMSBARRETTEANDGOSSELIN,2005,MERLET,2004,ROBERTSETAL,1998THEMASSANDINERTIAOFTHEMOVINGPARTISREDUCEDANDTHEYARELESSEXPENSIVEMOREOVER,PARALLELCABLEDRIVENMECHANISMSAREEASIERTOBUILD,TRANSPORTANDRECONFIGUREANDTHEYHAVETHEPOSSIBILITYOFWORKINGINAVERYLARGESPACECONSEQUENTLY,PARALLELCABLEDRIVENMECHANISMSHAVEBEENUSEDINSEVERALAPPLICATIONSSUCHAS,FORINSTANCE,ROBOTICCRANESDAGALAKISETAL,1989,HIGHSPEEDMANIPULATIONKAWAMURAETAL,2000,ACTIVESUSPENSIONDEVICESLAFOURCADE,2004ANDVIRTUALREALITYMERLET,2004THISPAPERDEALSWITHTHEDETERMINATIONOFTHEWORKSPACEOFSIXDOFPARALLELCABLEDRIVENMECHANISMSTHISWORKSPACEMAYBELIMITEDBYTHETOTALLENGTHOFEACHCABLE,BYTHEINTERFERENCESBETWEENTHECABLESANDBETWEENTHECABLESANDTHEMOBILEPLATFORMANDBYTHEUNIDIRECTIONALNATUREOFTHEFORCESAPPLIEDBYTHECABLESONTHEMOBILEPLATFORMTHELIMITATIONSDUETOTHETOTALLENGTHSOFTHECABLESCANBEDETERMINEDBYMEANSOFALGORITHMSPRESENTEDINGOSSELIN,1990ANDINMERLET,1999HOWEVER,THEWORKSPACEWILLUSUALLYNOTBELIMITEDBYTHETOTALLENGTHSOFTHECABLESSINCELARGETOTALLENGTHSCANGENERALLYBEUSEDFORACONSTANTORIENTATIONOFTHEMOBILEPLATFORM,THEPROBLEMOFTHEINFLUENCEONTHEWORKSPACEOFTHECABLESINTERFERENCESISADDRESSEDINMERLET,2004THETHIRDLIMITATIONWHICHISDUETOTHEUNIDIRECTIONALNATUREOFTHEFORCESAPPLIEDBYTHECABLESONTHEPLATFORMHASBEENSTUDIEDMAINLYINTHECASEOFPLANARPARALLELCABLEDRIVENMECHANISMSINBARRETTEANDGOSSELIN,2005,FATTAHANDAGRAWAL,2005,GALLINAANDROSATI,2002,GOUTTEFADEGOSSELIN,2006,ROBERTSETAL,1998,STUMPANDKUMAR,2004,VERHOEVENANDHILLER,2000,VERHOEVEN,2004,WILLIAMSETAL,2003中文翻译新的封闭式并联迷你机器人的直接运动学正解近年来,许多研究人员已经对并联式迷你机器人表现出了极大的兴趣。这种结构在精度、刚度、载荷重量比和载荷分布方面比那些所占空间更大的更适合。著名的斯图尔特平台(斯图尔特,1965)可能是第一个已经记录在文献中的六自由度(六度)并联机构。它是由六个独立的肢体将一个移动平台和一个地基连接而成。许多研究者认为斯图尔特平台可以当作一个机器人机械臂(例如,菲克特麦克道威尔,1980年,亨特,1983年,杨振宁与李政道,1984年,菲克特,1986)。其他类型的六自由度并联机构已在文献中被引入和研究(例如,KOHLI等人,1988;哈金斯和特萨,1988;蔡和塔玛塞比,1991A)。沃尔德伦和狩猎(1987)表明,并联机构的运动学行为有许多逆特性,串行机制。例如,并联机构的直接运动学比它的逆运动学困难得多,而对于串行机械臂,事实正好相反。迪厄多内等人。(1972)应用牛顿拉夫逊方法解决同一个的运动模拟器的斯图尔特平台运动学正解。后(1988)采用了类似的技术来对一个类似斯图尔特平台的并联机构进行直接运动学数值求解。格里菲斯和DUFFY(1989)以及NANUA等人(1990)研究了斯图尔特平台的特殊情况下,在其中对球形接头的基极和平台的平台或同心的正运动学。他们能够减少在一个单变量的平方第八度多项式(共十六度)的问题。然而,由格里菲斯和杜菲所提到的(1989),同心球节点对很可能存在设计问题。林等人(1990)解决了另一类的斯图尔特平台直接运动学问题,其中有两个同心球节点的基础上,和两个同心球节点平台。后一种斯图尔特平台受对称和同心球接
编号:201311171627457282    类型:共享资源    大小:51.50KB    格式:DOC    上传时间:2013-11-17
  
5
关 键 词:
教育专区 外文翻译 精品文档 外文翻译
  人人文库网所有资源均是用户自行上传分享,仅供网友学习交流,未经上传用户书面授权,请勿作他用。
关于本文
本文标题:外文翻译--新的封闭式并联迷你机器人的直接运动学正解.doc
链接地址:http://www.renrendoc.com/p-97282.html

当前资源信息

4.0
 
(2人评价)
浏览:25次
英文资料库上传于2013-11-17

官方联系方式

客服手机:17625900360   
2:不支持迅雷下载,请使用浏览器下载   
3:不支持QQ浏览器下载,请用其他浏览器   
4:下载后的文档和图纸-无水印   
5:文档经过压缩,下载后原文更清晰   

相关资源

  • Thomas_Calculus_13th(托马斯微积分 13版)Thomas_Calculus_13th(托马斯微积分 13版)
  • [机械模具数控自动化专业毕业设计外文文献及翻译]【期刊2016】借助于电缆驱动系统改进工业机器人的静态性-中文翻译[机械模具数控自动化专业毕业设计外文文献及翻译]【期刊2016】借助于电缆驱动系统改进工业机器人的静态性-中文翻译
  • [机械模具数控自动化专业毕业设计外文文献及翻译]【期刊2016】借助于电缆驱动系统改进工业机器人的静态性-外文文献[机械模具数控自动化专业毕业设计外文文献及翻译]【期刊2016】借助于电缆驱动系统改进工业机器人的静态性-外文文献
  • [机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】最小化模式下料问题科林麦克迪尔米德-中文翻译[机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】最小化模式下料问题科林麦克迪尔米德-中文翻译
  • [机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】组合机床行业现状与发展思考-中文翻译[机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】组合机床行业现状与发展思考-中文翻译
  • [机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】自行航水器真正自治-中文翻译[机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】自行航水器真正自治-中文翻译
  • [机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】自行航水器真正自治-外文文献[机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】自行航水器真正自治-外文文献
  • [机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】注塑模具的设计与热分析-中文翻译[机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】注塑模具的设计与热分析-中文翻译
  • [机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】注塑模的单浇口优化-中文翻译[机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】注塑模的单浇口优化-中文翻译
  • [机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】注塑模的单浇口优化-外文文献[机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】注塑模的单浇口优化-外文文献
  • [机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】主轴平衡力和曲轴弯曲应力的研究-中文翻译[机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】主轴平衡力和曲轴弯曲应力的研究-中文翻译
  • [机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】轴对称降落伞形状的研究-中文翻译[机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】轴对称降落伞形状的研究-中文翻译
  • [机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】轴对称降落伞形状的研究-外文文献[机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】轴对称降落伞形状的研究-外文文献
  • [机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】中国乘用车燃料经济性标准的组成和影响-中文翻译[机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】中国乘用车燃料经济性标准的组成和影响-中文翻译
  • [机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】指垫和平面之间的动态交互作用:实验和分析-中文翻译[机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】指垫和平面之间的动态交互作用:实验和分析-中文翻译
  • [机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】指垫和平面之间的动态交互作用:实验和分析-外文文献[机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】指垫和平面之间的动态交互作用:实验和分析-外文文献
  • [机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】直线电机高速数控切断机的发展-中文翻译[机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】直线电机高速数控切断机的发展-中文翻译
  • [机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】直线电机高速数控切断机的发展-外文文献[机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】直线电机高速数控切断机的发展-外文文献
  • [机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】支持机床系统的面向对象设计-中文翻译[机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】支持机床系统的面向对象设计-中文翻译
  • [机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】支持机床系统的面向对象设计-外文文献[机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】支持机床系统的面向对象设计-外文文献
  • [机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】振动镗孔与振动钻孔的研究-中文翻译[机械模具数控自动化专业毕业设计外文文献及翻译]【期刊】振动镗孔与振动钻孔的研究-中文翻译
  • 精品推荐

    相关阅读

    人人文库
    关于我们 - 网站声明 - 网站地图 - 资源地图 - 友情链接 - 网站客服客服 - 联系我们

    网站客服QQ:2846424093    人人文库上传用户QQ群:460291265   

    [email protected] 2016-2018  renrendoc.com 网站版权所有   南天在线技术支持

    经营许可证编号:苏ICP备12009002号-5