比表面電阻 的英文怎麼說

中文拼音 [bǐbiǎomiàndiànzǔ]
比表面電阻 英文
specific surface resistivity
  • 比 : Ⅰ動詞1 （比較; 較量高下、 長短、距離、好壞等） compare; compete; contrast; match; emulate 2 （比...
  • 表 : Ⅰ名詞1 （外面;外表） outside; surface; external 2 （中表親戚） the relationship between the child...
  • 面 : Ⅰ名詞1 （頭的前部; 臉） face 2 （物體的表面） surface; top 3 （外露的一層或正面） outside; the ri...
  • 電 : 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...
  • 阻 : 動詞（阻擋; 阻礙） block; hinder; impede; obstruct
  • 表面 : surface; superficies; boundary; face; rind; sheet; skin; outside; appearance
  • 電阻 : （物質阻礙電流通過的性質） resistance; electric resistance （電路中兩點間在一定壓力下決定電流強度...
  1. In this dissertation, we firstly prove that any dirichlet problem is indeed equal to a voltages problem of networks. we give five solutions to dirichlet problem in two dimensions ; among these five solutions, we prove that the iteration solution and the solution of relaxations are exponential convergence, then we estimate their respective convergence rates ; secondly, we discuss random walks on general networks, prove that there is an one to one correspondence between networks and reversible ergodic markov chains ; thirdly, we give probabilistic interpretation of voltages for general networks : when a unit voltage is applied between a and b, making va = 1 and vb = 0, the voltage vx at any point x represents the probability that a walker starting from x will return to a before reaching b ; furthermore, we study the relationship between effective resistance and escape probability : starting at a, the probability that the walk reaches b before returning to a is the ratio of the effective conductance and the total conductance

    本文證明了任何邊值的dirichlet問題都可轉化為求解電路電壓的問題：給出了計算平面格點上dirichlet問題的5種方法：證明了迭代法和松馳法都是指數收斂的，並分別給出收斂速度的估計；討論了一般電路上的隨機徘徊，驗證了電路與可逆的遍歷markov鏈是一一對應的；給出了電路電壓的概率解釋：當把1伏電壓加於a ， b兩端，使得v _ a = 1 ， v _ b = 0時，則x點的電壓v _ x表示對應的markov鏈中，從x出發，到達b之前到達a的概率；進一步地，給出了逃離概率與有效電阻之間的關系：從a出發，在到達b之前到達a的概率為有效傳導率與通過a的總傳導率之比。
  2. In acid copper sulphate solution, the nc copper has a more negative corrosion potential which is decreasing with reducing the grain size and diffusion impedance was only found in the as - prepared and as - annealed at 180 ? nc copper due to the diffusion within the pores and channels on the surface. both the tafel plots and eis study demonstrated that the nc copper exhibits a higher corrosion current and lower polarization resistance than its mc couterpart

    在酸性硫酸銅溶液中，納米晶銅的腐蝕電位比微米晶銅要負，並且隨著晶粒尺寸的減小而降低。 eis研究表明，未退火的和180退火的納米樣品中發現了擴散阻抗，與表面孔洞和通道中的擴散有關。極化曲線外推法和電化學阻抗研究都表明納米晶銅的腐蝕電流比微米晶銅高，而極化電阻要低。
  3. The safety of transmission line plays a important role in power system safety it is not only the requirement of ensure supply power reliability, but also the necessary precondition of enhance power system stabilization, to remove faulty line quickly and accurately, also keep non - faulty line continuous work when some transmission line faults current differential protection is a kind of simple, reliable and good - selective protection manner to any variety of transmission lines, power system development needs current differential protection apply to transmission lines, moreover the advancement of electric and communication technology enable current differential protection apply to transmission lines firstly, the paper discusses, analyses the research and application transmission line protection in detail, compare the principle and realistic presupposition of general line pilot protections secondly, because conventional current vector differential protection are influenced easily by load current and transitional resistance, in order to at the same time quicken protection act, the principle and criterion include work characteristic of differential protect based on fault component sampled values are studied, results shows that differential protect based on fault component sampled values excels general vector current differential protection in reliability, sensitivity and anti - saturation of current transformer in addition, synchronous current sampling methods at all terminals of line is analyzed and estimated lastly, the principle and criterion. also device design about current sampling values differential protection based on optical fiber communication, which apply to short transmission lines are concretely investigated,

    基於基爾霍夫定律的電流差動保護無論對於何種形式的輸電線路都是一種簡單、可靠、選擇性強的保護形式，電力系統的發展使得電流差動保護應用於線路保護成為需要，而電子、通信技術的發展使得電流差動保護應用於輸電線路成為可能。首先，本文對目前線路保護的研究和實際應用情況進行了討論和分析，比較了常用線路縱聯保護的實現原理和實現條件及優缺點。其次，針對常規相量電流差動保護易受正常負荷電流和故障過渡電阻影響的缺點，同時為加快差動保護的動作速度，對基於故障分量瞬時采樣值電流差動保護的原理、判據、動作特性等作了討論和分析，結果表明基於故障分量瞬時采樣值電流差動保護在可靠性、靈敏度、抗電流互感器飽和方面明顯優于常規相量電流差動保護，對電流差動保護各端的同步采樣方法和數據通信也進行了分析和評價。
  4. The study shows that the output pulse value of resistance absorption equipment is related to the chopper switch conduction ration and the selection of lagging angle

    研究表明，地面電阻吸收裝置的輸出電流脈動與斬波器的導通比、各支路斬波器的開關滯后角有關。
  5. Research on surface and grain boundary passivation mechanism obtained effects of surface recombination on crystalline silicon solar cell performance and the theoretical expression of grain boundary recombination velocity. the limit ratio of short - circuit current increment for anti - reflection coating utilization on solar cells was obtained. the crystalline silicon solar cell spectral response, contact resistance and minority carrier lifetime measurement systems were established

    鈍化機理研究獲得了表面復合對不同表面摻雜濃度晶體硅太陽電池性能的影響、表面和界面復合速度的理論表達式；研究得到了減反射膜對太陽電池短路電流增量比的極限；建立了太陽電池光譜響應、柵線電極接觸電阻和少子壽命等測試系統。
  6. Too much cnts contributed no effect in the improvement of overall performance of the batteries. the batteries with nano - scale coo shows better active properties, the addition of nano - scale coo further the conductivity of the nickel electrode, thus lower the internal resistance of the batteries, higher discharge voltages are achieved accordingly. for the formation of the better conductive net of coooh, the effectivity of discharge rise, that contributes positive effect to the high rate capability of the batteries

    浙江人學碩十學位論文摘要正極添迦納米coo的ni / mh電池具有較好的活化性能，納米coo更好地增強了鎳正極的導電性，進一步減小了電池的內阻;正極添迦納米coo的ni / mh電池還具有較高的放電平臺;由於納米coo的納米結構，以及相對于普通c00更大的比表面積，會在堿液中溶解形成更均勻緻密的co0oh導電網路，從而提高了放電效率，對電池的高倍率性能也有積極的影響。
  7. The calculation program using the matlab has been worked out to get the numerical solutions of the proposed models. the experiment has first been conducted in the laboratory to get the fundamentals thermal and moisture properties ( such as materials density, specific heat capacity and thermal conductivity ) and also the material moisture absorption isotherms of adobe building materials. the methods of measuring the surface mass transfer coefficient and material moisture content have been proposed

    首次對生土建築材料物性參數進行了實驗測試，得到了常用生土建築材料的密度、比熱和導熱系數等參數值，得到了生土建築圍護結構的等溫吸濕平衡曲線的擬合函數關系式；此外，研究了生土建築圍護結構表面質交換系數實驗測定方法，探索了利用電阻率測量生土建築圍護的安窪築科技人學博十學位論文結構內部含濕量的測試方法。
  8. A convenient and effective testing system for plastic eacapsulated microcircuit is designed. the testing results show that si3n4 passivation on test chip has the better protection than that without si3n4 passivation, and silicone gel coating can prevent moisture from the surface of the chip more effectively than polyimide coating, and molded plastic from varied manufacturers has the different effect on microcircuit due to its diversity

    貯存試驗的結果表明，在晶元上加氮化硅鈍化層比不加鈍化層具有更好的防護效果；與聚酰亞胺膠內塗層相比，硅酮膠內塗層更能有效地阻止水分到達晶元的表面；由於材料本身的差異，不同廠家生產的模塑封裝材料對微電路的影響也不同。
  9. This paper presents the effects of some features on the productivity of raw c60 materials, such as distance and approaching speed of electrodes, helium partial pressure and arc current etc. then we separate and purify the raw materials and obtain pure solid c60 of 99. 9 % and compare the purification efficiency and effect of different fluxion phase and fixed phase and discuss the effects of the experimental conditions, such as the depositing speed, the type of the substrate, the surface structure of the substrate and the temperature of the substrate. finally, we use xps, afm, ultraviolet, infrared and raman to analyze the component, structure and feature of the films qualitatively and quantitatively

    本文首先研究了氦氣分壓、弧電流大小、電極間距以及電極推進速度等實驗條件對制備c _ （ 60 ）粗品產率的影響；接著選用柱色譜法分離提純得到了純度大於99 . 9的c _ （ 60 ）固體，比較了不同流動相和固定相的提純效率和效果；然後採用自己改進后的真空鍍膜機，利用電阻式加熱蒸鍍方法，得到了純c _ （ 60 ）薄膜和不同摻雜比的銀摻雜薄膜；探討了沉積速率、襯底種類、襯底表面結構以及襯底溫度等實驗條件對薄膜結構的影響；最後通過xps ， afm ，紫外，紅外，拉曼對薄膜的成分、結構和特性作了定性和半定量分析。
  10. The intermediate - temperature sofc ( solid oxide fuel cell ) ’ s electrolyte with perovskite - type lsgm ( la _ ( 0. 9 ) sr _ ( 0. 1 ) ga _ ( 0. 8 ) mg _ ( 0. 2 ) o _ ( 3 - ) ) was synthesized using advanced pechini method and solidification method. the thermal and electrical properties of the sintered samples ( synthesized by two different methods ) were measured and compared by thermal expansion and ac impedance spectroscopy ; the phase transformation process and inner structure were measured and compared by xrd, dta - tg and ac impedance spectroscopy. the research results show that the electrolyte synthesized by advanced pechini method has several advantages, such as fine pre - powders, low sintering temperature, reduced or eliminated impurity phases and high conductivity etc. so, the apm is ideal method to synthesize lsgm

    採用改進的檸檬酸法（以檸檬酸和edta乙二氨四乙酸為復合絡和劑，檸檬酸為燃料）和固相法分別制備了具有鈣鈦礦結構的中溫固體氧化物燃料電池的電解質材料lsgm （ la _ （ 0 . 9 ） sr _ （ 0 . 1 ） ga _ （ 0 . 8 ） mg _ （ 0 . 2 ） o _ （ 3 - ） ） ，用差熱?熱重分析（ dta / tg ） 、 x光衍射分析（ xrd ） 、交流阻抗譜技術（ ac - impedancespectra ） 、比表面積分析（ bet ）和燒結收縮率曲線等手段對產物的熱分解過程、物相轉變和內部結構等進行了表徵，並對由這些粉體燒結而成的固體氧化物燃料電池的電解質材料的電導率進行了檢測。
  11. The imaging result obtained from theoretical model and real example indicates that the proposed method can improve greatly the ability to recognize the underground electric interface of tem compared with the regular processed resistance section

    對理論模型和實例資料的成像處理結果表明，採用瞬變電磁成像方法的成像處理結果比常規的瞬變電磁視電阻率處理剖面清晰、直觀，大大增強了由瞬變電磁資料識別地下電性層狀分界面的能力。
  12. In fundamental theory, adaptive optics, electrostatic actuation, flexure beam theory and squeeze film damping are researched ; in fabrication, bulk micro fabrication process and surface micro fabrication process are researched and compared, then the structure parameters and layout of a 8 x 8 micromirror array are designed using summit foundry ; in analysis, analytical and numerical method are used to perform static analysis, modal analysis, transient analysis, frequency analysis and to characterize the farfield performance of this 8x8 micromirror array. finally, in order to realize large scale micromirror array with lower snap down voltage, advices are given for further research

    在基本理論方面，通過對自適應光學，靜電力驅動，彈性梁理論和擠壓薄膜阻尼的研究，確定了微變形鏡的配置方案；在加工方面對體加工工藝， mumps工藝和summit工藝進行了研究與比較，並選用殘余應力小，表面質量好的summit工藝對8 8的微變形鏡陣列原型進行了結構設計與版圖設計；在分析方面主要對微變形鏡單元的靜態特性，模態特性，瞬態響應，頻率響應和8 8規模的微變形鏡陣列的遠場光學模型進行了研究，確定了微變形鏡的性能參數。
  13. First, it is associated with the prepared conditions of spectral pure graphite electrode ; second, compared with the untreated graphite, the surface functional groups of ? oh and ? cooh on the treated one increased dramatically with hot concentrated h2so4 and the impurities on electrode surface decreased significantly with ultrasonic rinse. a sequence reaction mechanism was proposed for the eis of mn ( ) / mn ( ) on different graphite electrodes. the spectral graphite and the treated one can be suitable for the inert electrode of mn ( ) / mn ( ) cathode

    分析原因認為：一方面與光譜純石墨電極的制備條件有關；另一方面，與未處理石墨電極相比，處理石墨表面含氧官能團? oh 、 ? cooh明顯增多，而且超聲清洗又使其表面雜質含量減少，並提出了一個反應機理解釋mn （ iii ） / mn （ ii ）電對在三種石墨電極上阻抗譜的不同，說明光譜純石墨和處理石墨均可以作為mn （ iii ） / mn （ ii ）正極電對的惰性工作電極。
  14. Xps measurement results exhibited that no detectable fe2 + existed in the compound of a ~ fe2os doped with sn4 +, which suggest that oxygen anions or cation vacancies not only can compensate the charge balance but also significantly enhance the gas - sensitivity of a - fe2o3 based gas sensors. ( 3 ) conductive type of a - fe2o3 doped with sn4 + is showed in the n - type by hall measurement and gas - sensitivity measurement. the results of measurements and characterizations suggest that the sensitive mechanism of the a - fe2o3 based nano - materials prepared by this work be the surface resistance controlled mode

    （ 3 ）首次進行了霍爾測量，並結合氣敏測試結果，從不同方面證實了摻錫- fe _ 2o _ 3納米半導體的導電類型是n型；綜合粉體的電導率?溫度曲線、元件的電阻?加熱電流特徵曲線、元件在不同氣氛下的電阻特性以及比表面積等測試表徵結果，得出本文所製成的- fe _ 2o _ 3基氣敏元件的氣敏機理特徵屬于表面控制型。
  15. Ohmic contacts on h2 - thermally - treated 6h - sic surface by evaporating aluminum without annealing have contact resistances of 8 10 - 3 - cm2 on room temperature and keep fairly good thermal stability under the temperature of 400. its ohmic properties do n ' t depend on the doping concentrations of the substrate, which enables us to form ohmic contacts on low dropped substrate especially on epitaxial layer

    通過氫氣處理6h - sic表面並鍍鋁后直接形成的歐姆接觸室溫比電阻率達到8 10 ~ （ - 3 ） ? cm ~ 2 ，溫度不超過400時該接觸具有較好的穩定性，其歐姆特性不依賴于襯底的摻雜濃度，是一種適宜在低摻雜襯底特別是sic外延片上制備歐姆接觸的有效方法。
  16. Resistance of the stator is obtained by solving a 1 - d magnetic field diffusion problem. based on the code, curves of fcg ' s inductance, resistance, temperature and its output current, voltage are calculated. secondly, the expanding process for an armature of a helical fcg is studied in depth by a nonlinear, explicit finite - element ( fe ) code

    數值計算電感時考慮了螺旋型fcg的三維效應，以及電樞表面鏡像電流的分佈，並通過求解圓柱型導線的一維磁場擴散問題比較精確地得到了fcg定子的電阻，在此基礎上計算了fcg裝置的電感、電阻、輸出電流、電壓和溫度等隨時間的變化。
  17. The result shows are as following, first, using a. c. impedance measurement to measure the compression sensibility of cfrc can eliminate the polarization effect at the electrode of cfrc specimen and the thermoelectric force of the electrode effectively ; the thermo sensitive effect can be avoided by using little electric current, so the a. c

    結果表明：採用交流阻抗法測試cfrc試塊的壓敏效應可以有效地消除cfrc試塊的電極處的極化效應和電極界面的熱電動勢；採用小電流供電可避免溫敏效應，因此交流阻抗法要比直流電阻法穩定性好。
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