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500 个结果
  • 简介:CE”标志是一种安全认证标志.被视为制造商打开并进入欧洲市场的护照和通行证。凡是粘有“CE”标志的产品就可以在欧盟各成员国内销售.无须符合每个成员国的要求,从而实现了商品在欧盟成员国范围内的自由流通。

  • 标签: “CE”标志 欧盟成员国 GS UL 安全认证标志 欧洲市场
  • 简介:LuminescencelifetimeofCe(Ⅲ)forCe0.9RE0.1P5O14,whereREdenotesrareearthionsotherthanCe(Ⅲ),wasmeasuredbymeansofthetime-correlatedsinglephotoncountingtechnique.Ithasbeenfoundthatthelifetimedataarecapableofelucidatingtheenhancementorquenchingofcerium(Ⅲ)luminescencebyalienREions(otherthanCe)indoublydopedceriumpentaphosphatecrystal.

  • 标签: REP5O14crystal Luminescence LIFETIME CE
  • 简介:Baiyuneboite-(Ce)isanewfluor-carbonatemineral.Basedonthefinedataonthestructureofthemineral,thefactorgroupandnormalcoordinateanalysesforitsinfraredspectrumhavebeencarriedout.ThefactorgroupanalysesindicatethatthesitegroupandfactorgroupsplittingsoftheinternalvibrationbandsofCO3^2-ionsdonotoccurandthatthedoublebandsofnormalmodesresultfromtwonon-equalsetsofCO3^2-ionsinthecrystalstructure,Thenormalcoordinateanalysesgivethestretchingforceconstants.bendforceconstantsandcalculatedfrequenciesofCO3^2-ions.Thecalculationsofpotentialenergydistributionallowustoassignv3andv4tothestretchingvibrationandthebendvibrationofCO3^2-ions.respectively.

  • 标签: 白云石 氟石 碳酸盐矿物 矿物结构 光谱
  • 简介:Inthepasttenyearstheeomplementarytristimulusspeetrophotometryll],eTs,hasseenitsdiverseappli-eations{2一61thoughmostresearehesremaininrelativelysimpesystems,andlessworkhasbeeninvolvinkinetiereaetions.AnattemPthasbeenmadeontheinvestigationofsomecomPlieatedsystemseontainingrareearthsandmeta一acetylchloroPhosPhonaz

  • 标签: COMPLEMENTARY tristimulus SPECTROPHOTOMETRY KINETIC characteristics SIMULTANEOUS
  • 简介:ThechemicalstateofgrainboundarycosegregationofCeandPinFe-P-CealloysystemwasstudiedbymeansofAugerElectronSpectroscopy(AES).TheAugerpeaksofCesegregatedatgrainboundariesarefoundwithintherangeof60~180eV.BycomparingwiththeAugerspectraoftheFe-Ce-Pintermetalliccompound,itissupposedthatthereisatwo-dimensionalinterfacialphaseatgrainboundarieswithCeandPcosegregationwhichissimilartothestructureoftheFe-Ce-Pcompound.

  • 标签: GRAIN BOUNDARY cosegregation CERIUM PHOSPHORUS AES
  • 简介:“丝绸之路”这条两千多年前开辟的中国与西方经济、文化交流的古道,至今还流传着许多动人心弦的中外友谊传说,保留着无数的名胜古迹。两千多年过去了,交通工具早已发生了极大变化。而“丝绸之路”这一美好的名字却依然作为中西友好往来的象征,为人们所称道。

  • 标签: CE认证 标准 设备 喷泉 丝绸之路 文化交流
  • 简介:根据WindowsCE的通信特点,分析了WindowsCE下PDA与GPS串口通信的实现方法,并采用C++语言完成通信软件设计,实现PDA与GPS间的通信。实验表明,该软件运行稳定可靠。

  • 标签: WINDOWS CE PDA GPS 串口通信
  • 简介:继三一拖泵、泵车之后,三一旋挖钻机又于日前成功敲开欧盟市场的大门。1月11日,北京三一桩机公司生产的SR220C旋挖钻机全面通过了德国TUV莱茵公司的CE认证,成为国内同类产品中首个获得CE认证的品牌。

  • 标签: 旋挖钻机 质量体系认证 国内 欧盟 市场占有率 桩机
  • 简介:ThesolidsolubilityofCe、La、SmandNdinFeorNiatvarioustemperaturewasdeterminedbymeansofadiffusion-couplemethodwiththeaidofanelectronprobemicroanalyzer.Twomethods,namelyareamethodandwholerangemethod,wereproposedfordataprocessinginthepresentpaper.Theprincipleandre-latedproblemsintheexperimentaldeterminationofthesolidsolubilityofrare-earthelementsinFeorNibyuseoftheabovementionedmethodswerealsodiscussed.

  • 标签: Solid SOLUBILITY RARE earths FE NI
  • 简介:SphericalYAG:Ce3+phosphorparticleswithnarrowsizedistributionwerepreparedbyspraypyrolysis.Theeffectsoftheconcentrationofsolution,theflowrateofcarriergasandtheannealingtemperatureonthephosphormorphologywerestudied.Theproductivityofprecursorparticlesshowsatrendofdropafterrisingwiththeincreaseofconcentration.Raisingtheflowrateofnitrogencanimprovetheproductivityoftheprecursorparticles.Phosphorpreparedbyspraypyrolysishasobviouslyhigheremissionintensitythanthatsynthesizedbysolidstatereaction,spraypyrolysismakesCe3+ionswelldistributedinthecrystallatticeastheluminescentcenters,andphosphorparticleshaveregularsphericityandnarrowsizedistribution.

  • 标签: 钇铝石榴石 稀土 热解 制备 发光二极管 荧光性质
  • 简介:移动服务系统分析与设计移动服务系统需求分析移动服务是应用比较广泛的移动解决方案,其核心是利用移动计算和无线通信技术为企业现场服务人员提供全面、便捷,实时的信息服务。我们现在就为某电器制造商设计一套用于售后维修服务的移动解决方案。

  • 标签: 移动服务 SERVER 系统开发 SQL 分析与设计 CE
  • 简介:Resinsofcomplexesmadefromagarose-Ce4+(RCA-Ce)andchitosan-Ce4+(RCC-Ce)wereprepared.Hydrolysisratesofmethamidophos,omethoateandchlorpyrifostreatedbyRCA-Cewere32.39%,27.12%and46.62%,respectively,thoseofchlorpyrifosandmethamidophosinmungbeansproutjuice38.28%and35.45%,andthatofchlorpyrifosinteaextract59.76%.HydrolysisratesofproteininteaextracttreatedbyRCA-Ceincreasedby86.46%.RCC-Cecouldbeemployedintheapplejuiceproduction.Thecontentsofmethamidophosandparathion-methylinthejuicetreatedbyRCC-Cedecreased58.76%and71.92%.Furthermore,RCC-Cewasusedtoclarificationforbeerbythewaysofacolumn.RCC-Cecouldhydrolyzesensitiveproteinandincreasecontentsoffreeaminoacidinthebeer.Therefore,thebeertreatedbyRCC-CecouldstayoxidationandagingprocedureduetosomemetalionsbeingabsorbedbyRCC-Ce.

  • 标签: RESINS POLYSACCHARIDES CERIUM hydrolyze protein ORGANOPHOSPHOROUS
  • 简介:一等奖1名:顾蔚莹(上海市南汇区)二等奖3名:陈治宇(陕西省咸阳市)、俞榕(上海市黄埔区)、张正超(广东省兴宁市)三等奖5各:詹逸臻(广东省潮州市)、王璐璐(江苏省扬州市)、王鹏羽(山东省寿光市)、史记(内蒙古赤峰市)、江锦靖(广州市番禺)

  • 标签: 幽默漫画 比赛获奖 漫画比赛