For the pemfc cathode , besides above the parameters , the effects of the thickness of the reaction layer , the ion conductivity of nafion electrolyte and the electronic conductivity in carbon phase of the reaction layer on the electrode performance have also been investigated 在对pemfc阴极的研究中，除了以上参数以外还考虑了反应层厚度， nafion ~ ( ? )电解质的离子传导率以及反应层中碳相传导率对电极性能的影响。
This paper introduces the structure of cathode adopted in nuerically controlled . electrochemical contour evolution machining , and up ts emphasis on the designing of the cathode spurting fluid from inside , which will be helpful for the improvement on nc eletrochenical contour evolutionu machining 介绍了整体叶轮数控展成电解加工阴极的结构形式,重点给出内喷式阴极的设计方法,这对完善整体叶轮的数控展成电解加工有重要意义
At present , feas have potential for use as an electron source in a wide variety of applications , including microwave power amplifiers ( such as twts , klystron ) , flat panel displays , electron microscopy , and electron beam lithography 目前,场致发射阵列阴极的应用领域十分广泛,主要包括微波器件(应用于twts , klystron等) 、平板显示器( feds ) 、电子显微镜及电子束刻蚀系统等。其中,应用研究的焦点主要集中在平板显示器和射频功率放大器。
All kinds of the flaky cathode with definite hardness and intensity could be assembled to the device with the new cathode - silver - slurry - plaster technology , which possessed the fabrication feasibility of large - area real field emission display device , and the contamination of carbon nanotube cathode materials was avoided 新型的阴极粘贴技术可以实现对各种片状阴极材料进行装配，避免了碳纳米管阴极的损伤，具有制作大面积显示器件的潜力。
Among these parameters , as far as the afc cathode is concerned , much attention has been paid to the porosity of the reaction layer , the thickness of the thin - film on the flooded - agglomerate , the radius of the flooded - agglomerate , the volume fraction of the flooded - agglomerates in the reaction layer 在对afc阴极的研究中着重考虑了以下几个参数：反应层的孔隙率，浸渍聚集体薄膜的厚度，浸渍聚集体的半径，浸渍聚集体在反应层中的体积分数。
The observation on the microstructures of matrices and cathodes indicate that eusco3 exists in sintered matrices and cathodes of e3 , while sc2o3 and y2o3 form a complete solid solution in matrices of y3 . the influence of microstucture to the emission properties of cathodes have been discussed 对烧结基体和阴极的微观结构进行了分析,结果表明e3基体和阴极中生成了eusco3 , y3基体中sc2o3和y2o3完全形成了的固溶体,讨论了微观结构对阴极性能的影响。
Using field emission cathode , x ray source can be made with several advantages : smaller volume and brighter , high frequency response , in - time turning on , etc . considering of the merits and potential markets , researching and fabricating miniature x - ray source is meaningful 由于突起数目大且尖端顶端电场强度高，因此产生很大的场发射电流密度。采用场发射阴极的x射线光源具有体积小，辐射强度高，频率响应快，可以随时开启，无需预热的优点。
Lab6 , as one kind of better material , is so perfect that it is important to research its chemical etching in the arts and crafts to be used in the preparation of emitting cathode , we simply state the chemical etching technical research in material of lab6 and have gainded graphics surface of lab6 而对六硼化镧的化学腐蚀在以其为阴极的阴极发射体制备工艺中起着至关重要的作用，本文简述了对材料的化学腐蚀工艺的初步研究，并得到了图形化的六硼化镧表面。
The properties of these doped powders , the microstructure and composition of these rare - earth co - doped tungsten matrices and cathodes have been investigated by size analysis , xrd , sem and edax . the electronic emission performances of these cathodes are measured in uhv electron emission surveyor . aes is adopted to analyze the atom composition and diffusion behavior of active elements on cathode surfaces 通过粒度分析、 xrd 、 sem 、 edax研究了掺杂粉末的特性、烧结基体和阴极的微观结构和成分;用动态真空电子发射测试仪对上述阴极进行了电子发射水平的测试;采用aes对阴极表面原子组成和活性物质的扩散行为进行了研究,分析了阴极发射水平与表面原子组成的关系。
By examining the new generation condutive polymer material 3 ， 4 ? polyethylene dioxythiophene ( pedt ) , this paper investigated the edt monomer synthetic path and the optimum filming conditions of the compound pedt . based on this research , i also discussed the manufacturing processes and the related principles of the solid tantalum capacitors , when replacing the conventional inorganic material mno2 with the pedt as the negative pole 本文以新一代导电聚合物材料3 ， 4 ?聚乙烯二氧噻吩（ pedt ）为研究对象，研究了edt单体合成路线及聚合物pedt的最佳成膜条件，并以此为基础，讨论了以导电聚合物有机材料pedt取代传统的无机材料mno2作阴极的固体钽电解电容器的制备工艺及相关机理。
