简介：仿制、仿造已经成为了我国一部分企业的固定生产方式，针对市场热门产品的仿造品屡见不鲜，逆向工程的广泛应用在其中起到了不可忽视的作用。本文从逆向工程设计的概念出发，阐述了现代制造业中逆向工程的概念以及逆向工程在模具制造等行业中的作用。本文对于我们正确认识逆向工程技术有一定的意义。

简介：Somefactorssuchascontinuouspricefallingofrareearthconcentrates,increaseinproductioncostandincreasinginvestmentinsafetyandenvironmentalprotectionpreventedthedevelopmentofminingindustry.Tosafeguardtheinterestsofminingcompaniesandfacilitatethehealthydevelopmentofrareearthindustry,REMiningSocietyofMianningCountyheldageneralmeetingrecently.FollowingresolutionswerepassedonJuly13th:1.SinceJuly14th2005,thelowestprotectivemarketpricesofrareear...

简介：你也许会问：kid不是“小孩”的意思吗？没错，不过在这里kid是动词，意思是“哄骗，嘲弄”。

简介：WiththeadministrationofNationalLandResourceMinistrytowardrareearthores,REOfficeofStateCounciltowardrareearthenterprises,andenforcementofenvironmentcontrolmeasures,newoutlookappearsinChineserareearthindustry,featuredbyholisticpriceclimbingofrareearthproducts.Somesmallandwithlargepollutionenterprisescloseddown.Morebigonesstoppedproductionduetoshortsupplyofconcentrates.Butthisisagoodphenomenontothoselargeproducers.Years'stockpilesweresoldout...

简介：大脚先生要举办一场舞会．他发出了很多邀请函，请你在下面这些邀请函上的姓名前填上填上正确的称呼，并用线把邀请函与对应的怪物连起来

简介：Britholite-（Y）（abukumalite）,arare-earthmineralfirstdiscoveredinJapanandSovietUnionin1963,wasrecentlydiscoveredinHenanProvince,China,bySongChunliu,QiaoBingkunandZhangJianhong.Itisasilicatemineralofa-patite-structure.Itschemicalformulais（Y,Ca,Dy）（SiO4）3（OH,F）.Itcontainsabout44%YRO3andnearly5%Dy2O3.Themineraloccursingraniteinassociationwithgadolinite,fergusonite,samarskite,

简介：FuJishuandYeYajunofZhejiangTex-tileEngineeringSchoolofChinarepor-tedthatasmallamountofRE-chlorides（0.3%）addedtothedyeingbathforpuresilkgivesprominentresultsasverifiedbylaboratoryworkandproductiontrialsandCeCl3isaseffectiveasmixedRE-chloridesofthelightsub-group.TheuseofREinsilkdyeingbathsre-suitsin:shorteningtimefordyeing,de-

简介：TheSeventhNationalSymposiumonREAnal-ysis,sponsoredbytheChineseSocietyofRareEarths,washeldinDayongCityofHunanProvinceSept.22-26,1992.Morethan80expertsattendedthesymposiumwith70paperspublished.Prof.JiangZuchenandZhangHuashan,bothfromWuhanUniversitywereinvitedtolecturethemeetingon“TheSituationandProbleminICP

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简介：Dr.YiminChaoofJiangsuInstituteofPetrochemistry,JiangsucollaboratedwithDr.JianguoZhaoofMassachusettsInstituteofTechnology,USAonajointresearchproject"StudyonthePhotoluminescenceofT1GaS2andTiGaS2.Er3+SingleCrystal".TheygrewthetitlesinglecrystalsbytheBridgmantechnique.Theyfoundthatthephotoluminescencemechanismofthecrystalsiscloselyre-

简介：TheMinistryofAerospaceIn-dustrychairedameetingonNove-mber6-8,1991inBeijingtore-viewrareearthapplicationsinaircraft.Over70delegatesfrom37domesticinstitutionsattended

简介：TheWeishanREmine,locatedontheWeishanLakeinShandongProvince,about200km.fromtheprovincialcapital,isoneofChina’simportantREmines.Intherangeofonly0.85squarekilometerswithadepthof500metershavebeenfoundtenoddmineralveinsrichinREs,ofwhichhasbeenprovedtobetypicalbastnasiteoccurringintheformofsin-glemineralwithhighpurityandcoarsesize.ThemineralfavourstheseparationandextractionofitsREs.Theadvanta-geousfactorsmentionedaboveresultinhighrecoveryofREsandlowproductioncost.Atpresent,themineisprovided

简介：Rareearthuhrafineparticlehasbeenpaidagreatattentiontoinrecentyearsaroundtheworldbecauseofitsincreasingapplicationsinfunctionalmaterials.Preciseceramicsisatypicalexample.Thepartiealsizesfortheproductnowavailableareusuallyintherangeof100-1000(1=1010m)withlargespecificsurface,say,70—120m2/g.Ultrafinepowdersareusuallyclassifiedinto3gradesdependingontheirpar-ticlesizes,thusthefirstbeingintherangeof10—

简介：ProfessorYuZongsenofBeijingUniver-sityofScienceandTechnologyhassum-marizedtheworksconcerningREadditioninironandsteelinlastfourtofiveyearsandwroteapaperentitled“Re-searchontheApplicationofRareEarthsinIronandSteelinResentYears”,whichwaspresentedinJ.Chin.RESoc.Vol.8No.2(1990)(EnglishEdition).Theauthorshowedmanydataoffree

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简介：Anisotropicstructures,nanoneedles,andnanospindlesofrareearthhydroxychloride(RE(OH)2Cl)andoxychloride(REOCl)(rareearth=EuandTb)weresynthesized.Therareearthhydroxychloridenanostructureswereformedviaathermallyassistedhydrolysisoftherare-earthsesquioxidenanocrystals.Themorphologicalevolutionofthenanostructureswasstudiedusinghigh-resolutiontransmissionelec-tronmicroscopyandscanningelectronmicroscopy,whilethestructuralevolutionwasinvestigatedusingX-raydiffractiontechniques.Thethermalstabilityoftherareearthhydroxychlorideswasinvestigatedusingthermogravimetricanalysis.Therareearthoxychloridenanospin-dlesweresynthesizedviaasimpleheat-treatmentofrareearthhydroxychloridenanospindles.

简介：High-purityREoxidesareusuallyob-tainedbydissolvingmixedREoxidesinhydrochloricacid,andtheobtainedchlo-ridesolutionisthenextractedandse-paratedafterthenon-rareearthimpuri-ties,especiallythehighcontentPb+2,havebeenremoved.Thisprocessisoneofthekeystotheimprovementoftheproductquality.Somesmeltersusebutylxanthateasapurifyingagent,butlargequantitiesofpoisonousgasesareevol-

简介：老师：你当然不是狗!你是幸运儿!luckydog是“幸运儿”的意思。

简介：我觉得你讲的笑话很好笑，所以说“You’rekillingme!”中文意思是“笑死我了!”

简介：ApilotexciterfittedwithREperma-nentmagnet,withacapacityof60-160KVA,hasbeenjointlydevelopedbyShenyangUniversityofTechnology,theHarbinE-lectricMachinePlant,theDongfengElec-tricMachinePlantandtheShanghaiElectricPlant.Theexciterhasbeenputintobatchproductionandisusedco-operatedlywithlargehomemadeelectricgenerators.