外文翻译--阀控式铅酸蓄电池的失效模式在深放电电动自行车的应用 英文版.pdf外文翻译--阀控式铅酸蓄电池的失效模式在深放电电动自行车的应用 英文版.pdf

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

JOURNALOFPOWERSOURCES1912009127–133CONTENTSLISTSAVAILABLEATSCIENCEDIRECTJOURNALOFPOWERSOURCESJOURNALHOMEPAGEWWWELSEVIERCOM/LOCATE/JPOWSOURFAILUREMODESOFVALVEREGULATEDLEADACIDAPPLICATIONSINDEEPDISCHARGEYJUNACHINABARTICLEARTICLERRAAKCYELECTRICFSOFVALEDORLIGHTDBYCAUSERATHERATIONATIESTHE1INTHELASTTWODECADES,MUCHEFFORTHASBEENDEVOTEDTOTHESTUDYOFVALVEREGULATEDLEADACIDVRLABATTERIESINTHEAPPLICATIONSOFELECTRICVEHICLESEVANDHYBRIDEVS1–5INCHINA,THEREISAPOPULATIONOFMORETHAN13BILLIONMOSTPEOPLEGOTOWORKBYBICYYELECTRICAPACUSETHETILLVRLOFDEANDMAROFINCLUDINGSULFPLATECONTACT,ETC,THEYVARYWITHDIFFERENTDESIGNS,MANUFACTURINGANDOPERATINGCONDITIONS7–15INTHEDEEPCYCLEDUTY,THEINTERFACEOFTHEGRID/ACTIVEMASSEASILYACCUMULATESTHELEADSULFATECRYSTALSWITHVERYHIGHRESISTANCEANDFORMSABARRIERLAYERWHENPB–SBALLOYSINTHEPOSITIVEGRIDARESUBSTITUTEDBYPB–CD–SN–AL03DOICLEAND655MILLIONBICYCLESWEREPRODUCEDIN2007INRECENTEARS,HOWEVER,MOREANDMOREPEOPLEUSEELECTRICBICYCLESORLIGHTSCOOTERSTOSUBSTITUTEFORBICYCLESTHESENEWVEHICLESHAVE250OR350WELECTROMOTORDRIVENBYA36OR48VVRLABATTERYK,RESPECTIVELY5,6BASEDONTHEPOWEROFTHEELECTROMOTORD,THEBATTERYCAPACITYIS12V10,17OR20AHTHEHELDAMOUNTOFELECTRICBICYCLESANDLIGHTELECTRICSCOOTERSATLEASTREACHES60MTHEENDOFLASTYEARITCORRESPONDSTOABOUT200M12V/10AHABATTERIES,ORABOUTRBM26BILLIONTHEPRACTICALOPERATINGLIFEBATTERIESISNORMALLYINTHERANGEOF1–2YEARSWITHTHERAPIDVELOPMENTOFCHINESEORASIANECONOMY,MOREELECTRICBICYCLESTHEIRBATTERIESWILLBENEEDEDANDTHEYHAVEAHUGEPOTENTIALKETINTHECOMINGYEARS,WHICHALSOPROMOTESTHEDEVELOPMENTEVALTHOUGHTHEREAREMANYFAILUREMODESOFVRLABATTERIES,PREMATURECAPACITYLOSSPCL,GRIDCORROSION,SOFTENING,∗CORRESPONDINGAUTHORTEL8659187892893;FAX8659188073608EMAILADDRESSYGUOFZUEDUCNYGUOALLOYSITISCALLEDTHE“ANTIMONYFREEEFFECT”ANDTHEPCL1FAILUREMODE7,8ALTHOUGHTHEBARRIERLAYERCANBEOBVIOUSLYIMPROVEDWITHTHEAPPLICATIONOFSNCONTENTMORETHAN12WT,ITISSUSCEPTIBLETOTHEABUSECONDITIONSSUCHASDEEPDISCHARGESOMOSTMANUFACTURERSINCHINAUSEPB–SB–CDALLOYSASPOSITIVEGRIDHOWEVER,CDISPOISONOUSANDMUSTBEEXCLUDEDTHECORROSIONOFPOSITIVEGRIDSINTHECYCLEDUTYISNOTHEAVYASCOMPAREDWITHTHATINTHEFLOATAPPLICATIONSTHEHIGHCONTENTSOFCAANDALACCELERATETHECORROSIONRATEOFPOSITIVEGRIDSGREATLY,ALTHOUGHTHEYHAVEGOODMECHANICALPROPERTIESANDCASTABILITYTHEACTIVEMASSAMOFPOSITIVEPLATESUNDERGOESGREATVOLUMEEXPANSIONANDSHRINKAGEINTHEDEEPCYCLEDUTY,WHICHCANLEADTOPOORCONTACTBETWEENAMPARTICLES8,9THISISTHEPCL2FAILUREMODEOFTENTAKINGPLACEINTHEEVBATTERIESITCANBEGREATLYIMPROVEDBYCOMPRESSINGTHEPLATESTACK,OPTIMIZINGTHEMANUFACTURETECHNOLOGYOFPOSITIVEPLATESANDINCREASINGTHERATIOOFPOSITIVETONEGATIVEAMTHESERIOUSSULFATIONOFNEGATIVEPLATESOFTENOCCURSWHENTHEBATTERYOPERATESATTHEHIGHRATESINAPARTIALSTATEOFCHARGEHRPSOCORHASAHIGHCURRENTOFOXYGENRECOMBINATIONORWHENTHEADDITIVESATNEGATIVEPLATESAREDECOMPOSEDUNDERTHEHIGHTEMPERATURECONDITION1,10,11ITWILLBEOVERCOMEWITHTHEUSEOFHIGHCONTENTGRAPHITE787753/–SEEFRONTMATTER2008ELSEVIERBVALLRIGHTSRESERVED101016/JJPOWSOUR200808059ONGLANGGUOA,∗,SHENGQUNTANGA,GANGMENGB,SHICOLLEGEOFCHEMISTRYANDCHEMICALENGINEERING,FUZHOUUNIVERSITY,FUZHOU350108,PRHUBEICAMELSTORAGEBATTERYCOLTD,GUCHENG441705,PRCHINAINFOHISTORYECEIVED26JUNE2008ECEIVEDINREVISEDFORM20AUGUST2008CCEPTED21AUGUST2008VAILABLEONLINE29AUGUST2008EYWORDSCLELIFEBICYCLEAILUREMODESTENINGVEREGULATEDLEADACIDBATTERIESABSTRACTTHE36OR48VVALVEREGULATSOURCESOFELECTRICBICYCLESBATTERIESHAVEBEENSTUDIEITINDICATESTHATTHEMAINPOSITIVEACTIVEMASSPAMWHENTHEELECTROLYTESATURTHEDEPOLARIZATIONOFTHENEGOXYGENEVOLUTIONACCELERATINTRODUCTIONBATTERIESFORELECTRICBICYCLEYANGBLEADACIDVRLABATTERYPACKSHAVEBEENWIDELYAPPLIEDTOTHEPOWERELECTRICSCOOTERSINCHINATHEFAILUREMODESOFTHE12V/10AHVRLATHECYCLELIFETESTATC2DISCHARGERATEAND100DEPTHOFDISCHARGEDODOFTHEBATTERYFAILUREINTHISCYCLEDUTYISTHESOFTENINGANDSHEDDINGOFTHANINDIVIDUALWATERLOSS,RECOMBINATIONEFFICIENCYORSULFATION,ETCFALLSTOACERTAINEXTENT,THEHIGHOXYGENRECOMBINATIONCURRENTLEADSTOVEPLATEANDTHESHIFTOFTHEPOSITIVEPLATETOAHIGHERPOTENTIALTHEVIOLENTSOFTENINGOFPAMANDTHEENDOFCYCLELIFE2008ELSEVIERBVALLRIGHTSRESERVEDATION,DRYINGOUT,ADDITIVEDECOMPOSITIONANDPOORSEPARATOR128YGUOETAL/JOURNALOFPOWERSOURCES1912009127–133INNEGATIVEACTIVEMASSNAM12DRYINGOUTISMOSTLYCONNECTEDWITHAHIGHCHARGEVOLTAGEANDCURRENT,OFTENINCOMBINATIONWITHHIGHBATTERYTEMPERATUREINTHEEXTREMECASES,THERMALRUNAWAYMAYTAKEPLACEFORABATTERYWITHVERYLOWELECTROLYTESATURATIONWATERLOSSDEPENDSONTHEGRIDCOMPOSITIONS,IMPURITIES,BATTERYTEMPERATUREANDCHARGEVOLTAGE8THESUITABLECHARGEREGIMEINCLUDINGFASTCHARGEISVERYIMPORTANTFORPROLONGINGTHEBATTERYCYIES,ANDAR2ERSTRCURRBICYIMVRLCY2POSEGLASSWSN–00CONTAINEDENSITIESINGHDUCTDISCIN1AGAGTHEWHENTWITHTHEPOPTMICR33BATTTHEIR28THTHAT,60ABOUTING,TTFIG1EVOLUTIONOFDISCHARGECAPACITYOFTWOBATTERIESINTHECYCLESAT100DODCURRENTANDBATTERYVOLTAGEATTHECURRENTLIMITEDCONSTANTVOLTAGEINTHECYCLELIFETESTINTHEFIRSTCONSTANTCURRENTSTAGE25A,THECONSTANTCURRENTTIMEINFIG2ASHORTENSWITHTHECYCLESITISDUETOTHEGRADUALFALLINGOFTHEBATTERYCAPACITYTHERISINGOFTHECHARGEVOLTAGEINFIG2BINDICATESTHEINCREASEOFTHEBATTERYPOLARIZATIONRESISTANCEDUETOWATERLOSSANDBATTERYDEGENERATION,ETCINTHESECONDCONSTANTVOLTAGESTAGE144V,THECHARGECURRENTDROPSFIG2THECHANGESOFACHARGECURRENTANDBCHARGEVOLTAGEATTHECURRENTLIMITEDCONSTANTVOLTAGEINDIFFERENTCYCLESCLELIFE13FORTHEPRACTICEOPERATINGOFELECTRICBICYCLEBATTERTHEIRDISCHARGECURRENTDEPENDSONTHEELECTROMOTORPOWERTHEACCELERATINGPROCESSESTHECUTOFFVOLTAGEIS105VTHEYENORMALLYCHARGEDATACURRENTLIMITEDCONSTANTVOLTAGECCCVA/148VFORONENIGHT,TWOORTHREETIMESPERWEEKSOMECHARGALSOUSETHEMULTISTEPCONSTANTCURRENTCHARGEINTHESTANDARDEST,HOWEVER,THEELECTRICBICYCLEBATTERIESAREDISCHARGEDATA2HATETO70OR100DEPTHOFDISCHARGEDODANDCHARGEDATTHEENTLIMITEDCONSTANTVOLTAGEALTHOUGHTHEVRLABATTERIESHAVEBEENWIDELYUSEDINELECTRICCLE,THEIRCYCLELIFEANDPERFORMANCESTILLNEEDTOBEFURTHERPROVEDINTHISWORK,THEMANUFACTURETECHNOLOGIESOF12V/10AHABATTERIESWEREOPTIMIZEDANDTHEFAILUREMODESINTHEDEEPCLEDUTYWEREINVESTIGATEDEXPERIMENTALTHETESTBATTERYWAS12V/10AHC2RATEVRLABATTERIESCOMDOFSEVENPOSITIVEANDEIGHTNEGATIVEPLATESANDTHEABSORPTIVEMATAGMSEPARATORTHEPOSITIVEANDNEGATIVEGRIDSEREPB–0065CA–12SN–0003ALANDPB–0085CA–03515ALALLOYS,RESPECTIVELYTHEPOSITIVEANDNEGATIVEPASTESD45AND42GH2SO4PERKGLEADPOWDERTHEIRAPPARENTWERE43–44GCM−3ITTOOK48HFORTHEIRCURINGANDDRYTHENTHEBATTERIESWEREASSEMBLEDANDFILLEDWITH125GCM−32SO4CONTAINING15NA2SO4THECONTAINERFORMATIONWASCONEDBYTHEMULTISTEPCONSTANTCURRENTCHARGEREGIMEWITHTWOHARGESTEPSWITHIN70HTHEBATTERYWEIGHTWASABOUT425KGTHECYCLETEST,THEBATTERIESWEREDISCHARGEDAT5AC2RATETO05V100DODANDCHARGEDATACURRENTLIMITEDCONSTANTVOLTEOF25A/144VFOR6H,FOLLOWEDBYCHARGINGAT08AFOR1HAINATAMBIENTTEMPERATUREOFABOUT25◦CTHESPECIFICENERGYOFBATTERYREACHES326WHKG−1THECYCLINGTESTWASTERMINATEDTHEBATTERYCAPACITYFELLTO7AH70RATECAPACITYINORDEROMEASURETHEBATTERYINTERNALRESISTANCE,ASHORTCURRENTPULSE5AAND1MSWASEXERTEDBYARBINBT2000INSTRUMENTSAFTERCYCLELIFETEST,THEBATTERIESWERETORNDOWNANDANALYZEDTHEWDERXRAYDIFFRACTIONXRDOFPOSITIVEANDNEGATIVEACTIVEMASSAMANDNAMWERECARRIEDOUTBYAX’PERTPROMPDDIFFRACTOMEERPHILIPSTHEIRAPPEARANCEWASOBSERVEDBYASCANNINGELECTRONOSCOPESEM,PHILIPS,XL30ESEMTEPRESULTSANDDISCUSSION1CYCLETESTSFIG1SHOWSTHEDEPENDENCEOFTHEDISCHARGECAPACITYOFTWOERIESONCYCLENUMBERATC2DISCHARGERATEINTHEINITIALCYCLES,CAPACITYINCREASESANDREACHESTHEMAXIMUM,1155AH,INTHECYCLETHENITDECREASESGRADUALLYBEFORETHE250THCYCLEAFTERITBECOMESRELATIVELYSTABLE,BUTITDROPSQUICKLYAFTERABOUTTHE0THCYCLETHECYCLELIFEOFBATTERYAANDBISSIMILARANDREACHES680CYCLESSINCEINVARIOUSFAILUREMODES,THEGRIDCORROSION,PAMSOFTENDRYINGOUT,SULFATIONORUNDERCHARGE,ETCARECLOSELYRELATEDOTHEBATTERYCHARGE,THECHARGEREGIMEAFFECTSTHECYCLELIFEOFTHEESTBATTERIESGREATLY16–18FIG2SHOWSTHECHANGESOFTHECHARGEYGUOETAL/JOURNALOFPOWERSOURCES1912009127–133129FIG3EVOLUTIONSOFCHARGECURRENTAT6HANDCHARGEVOLTAGEAT7HINFIG2QUICKLYANDREACHESVERYSMALLVALUEHOWEVER,THE‘TAIL’CURRENTAT6HBEGINSTOINCREASEOBVIOUSLYAFTERABOUTTHE400THCYCLEANDITSDETAILEVOLUTIONISSHOWNINFIG3ATTHEFINALSTAGEOFCHARGEAT08A,FIG2BSHOWSTHATTHECHARGEVOLTAGEATFIRSTINCREASESANDTHENDECREASESASTHECYCLETESTPROCEEDSTHETURNINGPOINTAPPEARSABOUTINTHE50THCYCLEANDTHECHARGEVOLTAGEREACHES1668VTHENTHEMAXIMUMCHARGEVOLTAGEDECREASESGRADUALLYWITHTHEELECTROLYTECONSUMPTIONORTHEDECREASEOFTHEELECTROLYTESATURATION,WHIC5MEANSANDCONSSCCIZATIONC0HASCURRANDFCFIG5THECHANGESOFVOLTAGEANDCURRENTWHENTHETHREEFAILEDCELLSWERECHARGEDBEFOREANDAFTERADDINGWATERFIG6THEVOLTAGEFALLINGOFTHREECELLSDURINGTHESHELFAFTERADDINGWATERANDAFEWCYCLESHLEADSTOTHEDEPOLARIZATIONOFTHENEGATIVEPLATEAFTERTHE70THCYCLE,THEMAXIMUMCHARGEVOLTAGEISLOWERTHAN1440VITTHATSUCHLOWPOLARIZATIONMAYRESULTINTHEUNDERCHARGETHEACCUMULATIONOFPBSO4ATTHENEGATIVEPLATEFIG3SHOWSDEPENDENCEOFTHECHARGECURRENTATTHEENDOFTANTVOLTAGE6HINFIG2AANDTHEVOLTAGEATTHEENDOFCONTANTCURRENT7HINFIG2BONTHECYCLENUMBERINPRACTICE,THISHARGECURRENTRESPONSESTOTHERATEOFOXYGENRECOMBINATIONORHARGEEFFICIENCYANDTHECHARGEVOLTAGERESPONSESTOTHEPOLAROREFFECTIVECHARGEITISFOUNDFROMFIG3THATTHEBATTERYHARGEVOLTAGEISVERYHIGHANDTHECHARGECURRENTINCREASESFROM12TO039AINTHEINITIAL50CYCLESITINDICATESTHATTHEBATTERYHIGHELECTROLYTESATURATIONANDVERYLOWOXYGENRECOMBINATIONENTINTHISPERIODTHENTHECHARGEVOLTAGEDROPSVERYQUICKLYISSTABILIZEDINTHERANGEOF146–150VTILLTHE400THCYCLE,IG4THECHANGESOFTHEBATTERYINTERNALRESISTANCEATTHEENDOFCHARGEANDDISHARGEINTHECYCLESFIG7THECHANGESOFTHEINTERNALRESISTANCEINTHECHARGEANDDISCHARGEOFTHREECELLSBEFOREANDAFTERADDINGWATER130YGUOETAL/JOURNALOFPOWERSOURCES1912009127–133FIG8THEPHOTOGRAPHSOFTHEPLATESTACKANDITSPOSITIVEANDNEGATIVEPLATESOFFAILEDBATTERYAANDTHECHARGECURRENTLIESINTHERANGEOF0211–0388ATHISISARELATIVELYIDEALCYCLEPROCESS,INWHICHTHERELATIVELYHIGHVOLTAGENOTONLYENSURESTHEFULLCHARGEANDBUTALSONOMOREWATERLOSSOCCURSAFTERTHAT,ESPECIALLYTHE600THCYCLELATER,THECHARGECURRENTATCONSTANTVOLTAGESTAGEINCREASESRAPIDLYWHILETHECHARGEVOLTAGEDECREASEGRADUALLYFROM1468TO1409VINTHISSTAGE,THEELECTROLYTESATURATIONONLYDECREASESBY12FROM882TO870INABOUT250CYCLESKIRCHEVANDPAVLOV19FOUNDTHATTHELIQUIDFILMTHICKNESSONTHESURFACEOFNAMANDOXYGENRECOMBINATIONRATECHANGESHARPLYWHENTHEELECTROLYTESATURATIONISLOWERTHANABOUT87ATTHISTIME,THEREFORE,ONLYALITTLEDECREASEOFTHEELECTROLYTESATURATIONWILLRESULTINVERYHIGHOXYGENRECOMBINATIONCURRENTANDTHEDEPO
编号:201311171350176370    类型:共享资源    大小:2.65MB    格式:PDF    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--阀控式铅酸蓄电池的失效模式在深放电电动自行车的应用 英文版.pdf
链接地址:http://www.renrendoc.com/p-96370.html

当前资源信息

4.0
 
(2人评价)
浏览:28次
淘宝运营上传于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