電子發射極 的英文怎麼說

中文拼音 [diànzishè]
電子發射極 英文
electron emitter
  • : Ⅰ名詞1 (有電荷存在和電荷變化的現象) electricity 2 (電報) telegram; cable Ⅱ動詞1 (觸電) give...
  • : 子Ⅰ名詞1 (兒子) son 2 (人的通稱) person 3 (古代特指有學問的男人) ancient title of respect f...
  • : 名詞(頭發) hair
  • : Ⅰ動詞1 (用推力或彈力送出) shoot; fire 2 (液體受到壓力迅速擠出) discharge in a jet 3 (放出) ...
  • : i 名詞1 (頂點; 盡頭) the utmost point; extreme 2 (地球的南北兩端; 磁體的兩端; 電源或電器上電流...
  • 電子 : [物理學] [電學] electron
  1. The density of holes in the base is less than the density of free electrons in the emitter and collector.

    中空穴的密度小於和集中自由的密度。
  2. This project which is based on the demand of increasing the electron tube ’ s qualities totally and reducing the manufacture cost has done a large amount of investigative work as follows to improve and perfect the technologies for the important part of electron tube manufacture ? the grid surface processing : on the surface processing of the molybdenum grid, the primary purpose is to reduce thermionic emission and secondary electronic emission of the grid. by the constantly experiment and grabbling the different technology routes, we have successfully developed these new technologies on the tac and zrc electrophoresis and electroplating platinum black of the grid, and made its surface cladding quality very stable and reliable

    本課題是基於整體提高管的質量和降低生產成本的要求,對管生產中的重要部分? ?柵的表面處理技術進行改進和完善,主要在以下方面進行了深入研究:在鉬柵表面處理方面,主要為實現降低柵的熱和二次,通過不同工藝路線的不斷試驗和摸索,成功開出柵泳tac 、 zrc和鍍鉑黑的新工藝,使柵的塗覆質量穩定可靠。
  3. The dust charging associated with the electron beams including the secondary emission of dust can dominate the dust surface potential in the close cathode region. in this case, dust of the same size can levitate at two different positions in the cathode

    另外還現:在考慮板有強和塵埃粒本身的二次時,同一大小的塵埃粒能夠懸浮在鞘層中兩個不同的位置。
  4. In theoretical analysis, the motion of radially - emitted electron beam in diode region and drift region has been analyzed, and the relation between radial momentum or current of electron beam and the guiding magnetic field has also been studied, then the possibility to optimize the guiding magnetic field has been derived. the motion of radially - emitted beam electrons in smooth bore magnetron and smooth bore milo has also been studied theoretically. at last, the motion of radially - emitted beam electrons in compound axial and azimuthal magnetic field has been studied

    在理論分析中,初步分析了軸向條件下在二體區域和漂移區的運動規律,徑向動量隨著外加磁場變化的規律,以及流隨著外加磁場的變化規律,還有二體區域磁場優化的可能性;分別研究了有軸向磁場時以及有角向磁場時徑向在光滑陽結構中的運動規律,最後分析了在軸向和角向復合磁場中的運動規律。
  5. Standard test method for determination of contaminants in gas turbine and diesel engine fuel by rotating disc electrode atomic emission spectrometry

    轉盤光譜法測定氣輪機和柴油動機燃料中雜質的標準試驗方法
  6. In addition to pic method, the numerical computation method is used as a compensation for the study of the characteristics of electron beam. the two methods are used separately to attain the trajectory of axially - emitted electron beam in diode region and drift region, and the trajectory of radially - emitted electron beam with axial, azimuthal, as well as compounded axial and azimuthal magnetic field. three two - dimensional codes and two three - dimensional codes have been made out to compute the trajectories

    本文特點之一就是採用粒模擬和數值計算相結合的方法進行模擬計算,分別得到了軸向條件下在二體區域和漂移區的軌跡,徑向條件下在角向磁場、軸向磁場、角向和軸向復合磁場中的運動軌跡,分別編制了三個二維軌跡計算程序和兩個三維軌跡計算程序,最後將粒模擬和數值計算得到的結果進行了對比,得到了較為滿意的結果。
  7. Standard practice for definition and determination of thermionic constants of electron emitters

    電子發射極的熱離常數定義和測定的標準實施規范
  8. The factors which influenced the process include the insulator ' s material, structure, the distribution of space electrical field, the way to deal with the surface, the characteristic of voltage waveform, pulse width etc. there are two kinds of theory for the vacuum surface flashover : secondary electron emission avalanche ( seea ) and electron triggered polarization relaxation ( etpr )

    影響該過程的因素包括絕緣材料結構、空間場分佈、表面處理方法、所加壓特徵,脈沖寬度等。研究真空表面閃絡過程有兩類理論:二次崩潰( seea )和化鬆弛( etpr ) 。
  9. The main work and conclusion for this paper is as following : according to the flashover test results of several kinds of iced insulators under positive voltage and negative voltage, this paper obtained : for the single porcelain insulator, the single glass insulator and the composite insulator bridged completely by icicle, the metal cathode ' s strong ability of emission electron is the primary reason that results in the lower negative flashover voltage ; the position difference of the high resistance district in method anode side results in that porcelain insulator cluster and glass insulator cluster have an evident effect of polarity ; when less ice and no icicle at the brim of the sheds, due to numerous non - polar arcs on the composite surface, the effects of polarity of composite insulator was lost using the test method of the average flashover voltage in the freezing period, dc flashover performances were investigated of several insulators with some typical structures and different material

    本文的主要工作和結論如下:在人工氣候室內,根據不同覆冰絕緣正、負性下的閃絡試驗結果,得出負弧金屬陰的強能力造成了單片瓷、玻璃絕緣及被冰凌橋接的合成絕緣有較低負性冰閃壓;正弧金屬陽側產生高阻區所處位置的差異使得瓷和玻璃絕緣串具有明顯的性效應;覆冰較少時,合成絕緣表面出現數量較多的非弧使合成絕緣性效應。利用覆冰期內平均閃絡壓的試驗方法,對不同材質和結構的絕緣在覆冰、低氣壓和污穢共存環境中的直流閃絡特性進行了研究。試驗結果表明,直流平均閃絡壓隨著海拔的升高、覆冰量的增加以及污穢度的增加而降低,且其特徵指數與絕緣結構、覆冰量、覆冰狀態、污穢度等有關。
  10. In simulations, all important phenomena, such as non - neutral sheath widening near cathode, cathode electron emitting, current channel migrating to the load side of the plasma, ion accelerating toward cathode and magnetic insulation of cathode emitting electrons etc, have been observed and depict the internal physics of this device. also presented is the influence of cathode emitted electrons on phenomena in the conduction processes of pegs. the simulation results show, without cathode emitted electrons, rapid magnetic field penetration takes place only in region near the cathode, with cathode emitted electrons, magnetic field penetration takes place in all plasma region

    診斷現了陰表面非中性鞘層的形成、陰流通道的漂移、等離體離加速以及陰磁隔離等物理現象,揭示了這一斷路器件的物理機制;分析了陰對peos導通過程中的物理現象的影響,模擬結果顯示:忽略陰作用,磁場滲透現象主要出現在陰表面區域,考慮陰作用,磁場滲透現象出現在整個等離體區域。
  11. This research has studied the microstructure of cathode materials systematically by the means of high resolution transmission electron microscopy and scanning electron microscopy, surveyed the electron emission performance of la2o3, - mo, la2o3 - y2o3 - mo, la2o3 - sc2c > 3 - mo cathode with the self - designed electron emission surveyor and analyzed the elements changing of the surface of mo - la2o3 - sc2c > 3 cathode in - situ. while it was heated to different temperature. at last, the relationship of the microstructure of cathode, diffusion of active matter and electron emission performances has been discussed

    本研究採用高分辨掃描鏡、透鏡對稀土鉬鎢陰材料的顯微結構進行了系統研究;利用本課題研究組設計研製的測量儀對la2o3 - mo , la2o3 - sc2o3 - mo , la2o3 ? y2o3 - mo三種陰(以下稱鑭?鉬陰、鑭鈧?鉬陰、鑭釔?鉬陰)的性能進行了測量;利用經改造后的俄歇能譜儀「原位」分析了性能較好的鑭鈧鉬陰在不同溫度下表面活性元素的變化情況。
  12. However, the most commonly used x - ray sources didn " t change much no matter in structure or theory, still using thermionic cathodes as electron sources. such conventional x - ray tubes have some defaults, such as big volume, low frequency response, demanding for supply to cathode that was also brittle

    目前使用的x光源的基本特點是採用熱形式即採用熱燈絲作為源,在高壓加速下轟擊陽產生x線,這樣的光源體積較大,需要加熱陰源,且對頻率響應慢。
  13. Scandate cathode has outstanding properties of high emission at low work temperature. it ’ s the only thermionic cathode which can suffice to the development of new electronic device ’ s requirement

    含鈧擴散陰具有其優異的低溫高流密度的的能力,是目前唯一能滿足新型器件展要求的熱陰材料。
  14. To find a proper and convenient way in electron emitter research, in the paper, we have discussed the essential and possibility of setting up a new pld ( pulsed laser deposition ) device which connects with aes ( auger energy spectra ), and built such device in order to complete cathode deposition and analysis without exposing to the atmosphere and carried out cathode in - situ preparation and analysis electron emission phenomenon is a physical process taken place in surface of electron emitter

    為了解決體(陰)研究方法中存在的問題,並尋求一種適當的、方便的陰研究實驗方法,本論文論證了建立與aes相連的pld裝置的必要性和可行性,並實際建立了這一裝置,實現了陰的原位沉積、原位分析。現象是在體表面生的物理過程,表面是由活性元素構成的動態平衡系統,這一系統直接決定性能。表面分析手段對陰研究是必不可少的。
  15. In this paper , first, the author drew some important conclusions by analyzing several technical factors and experimental conditions which would have great influence on the quality of diamond thin films during mpcvd process , including gas proportion , the power of microwave , the plasma ' s location, the nucleation technique, etc. finally , the author has successfully deposited nanocrystalline diamond thin films with 300nm crystal particles on the slick surface of silicon by using ch4 / h2 gases in the mpcvd system , and the nanocrystalline diamond thin films was proved to have good field emission performance. all these researches will make the foundation for the field emission cathode of diamond films

    本論文中,作者分析了mpcvd方法中氣源成分比、微波功率、等離體球的位置、成核技術等各種工藝條件對金剛石薄膜質量的影響,並總結得到了一些有意義的結論;同時,在自行研製的mpcvd沉積系統上,於4 - 7kpa 、 1000左右的熱力學條件下,採用ch4 / h2氣源氣氛在光滑的硅襯底上制備出了晶粒尺寸在300納米以下的納米晶金剛石薄膜,測試得到了較好的薄膜場致性能,為金剛石薄膜場致冷陰的研究工作打下了實驗基礎。
  16. Recently, a number of experiments and theoretical researches have showed that diamond thin films , especially nanocrystalline diamond thin films, could emit electrons at very low fields, and be well suited for field emission cold cathode which is applied in many field emission applications, such as microwave vacuum devices and field emission displays

    近年來,國內外不斷有實驗和理論研究表明,金剛石薄膜特別是納米晶金剛石薄膜,在低的開啟壓作用下,即可獲得很高的場致流密度,具有十分優秀的場致特性,是一種理想的場致材料。
  17. According to secondary electron emission avalanche ( seea ) theory, the effects of insulating materials, shapes, electrode structures of vacuum insulator on surface flashover and its mechanism, design optimization methods for vacuum insulator to improve surface flashover voltage by selecting insulating material, shape and electrode structure are reviewed

    摘要根據二次崩( seea )理論,綜述了真空絕緣的絕緣介質材料、幾何形狀和結構對絕緣沿面閃絡的影響和機理過程,以及從這三方面優化設計真空絕緣以提高其沿面閃絡壓的方法。
  18. Y3 cathode still has excellent emission capability though cheap y2o3 partially substitutes for expensive sc2o3, this has great significance for reducing the cost of cathode

    Y3陰用廉價的y2o3部分替代昂貴的sc2o3后仍然具有優異的性能,對降低陰的成本具有重要的實際意義。
  19. 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

    通過粒度分析、 xrd 、 sem 、 edax研究了摻雜粉末的特性、燒結基體和陰的微觀結構和成分;用動態真空測試儀對上述陰進行了水平的測試;採用aes對陰表面原組成和活性物質的擴散行為進行了研究,分析了陰水平與表面原組成的關系。
  20. Investigation on the process of the electrons emission from a diode with a ferroelectric cathode

    強流鐵過程研究
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