理想導電性 的英文怎麼說

中文拼音 [lǐxiǎngdǎodiànxìng]
理想導電性 英文
perfect conductivity
  • 理 : Ⅰ名詞1 （物質組織的條紋） texture; grain （in wood skin etc ） 2 （道理;事理） reason; logic; tru...
  • 想 : 動詞1 （思索） think; ponder 2 （推測; 認為） suppose; reckon; consider; think 3 （希望; 打算） w...
  • 導 : 動詞1. （引導） lead; guide 2. （傳導） transmit; conduct 3. （開導） instruct; teach; give guidance to
  • 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...
  • 性 : Ⅰ名詞1 （性格） nature; character; disposition 2 （性能; 性質） property; quality 3 （性別） sex ...
  • 理想 : ideal
  1. For this purpos, from the point of the log geology, aimed at the actuality of the current fractured reservoir log geology interpretation and evaluation, based on synthetical analysis of the current domestic and foreign fruit of fractal dimension investigation of reservoir fracture, using the method and technique of fractal dimension, through the further discussion of the fractal dimension characteristics of m index and n index in the log interpretation archie model in a sample way and through the theoretic reasoning to the fractal dimension dfa and m index of fractured reservoir interval ' s log curve, according to the geophysical signification of the fractal dimension dfa of fractured reservoir interval ' s log curve shape : the more complicated the change of the curve shape is, the larger the its dfa value is, then the more complicated space structure of fracture and pore, then the higher value of m index of space structure of fracture and pore, and so on, the text propounds an improved method, based on box dimension, of covering log curve with scale grid, and by programming computes the dfa and its m index value of fractured reservoir interval ' s log curve, for instance, ac and rt curve, ect, then further puts this technique into application investigation, and makes analysis of application effects in the reservoirs located in l area of qx oil field from three aspects : 1. the dfa and its m index value of fractured reservoir interval ' s log curve, for instance, ac and rt curve, ect, which are derived from computing, is used to identify reservoir type by crossplotting m index with the product df _ acrt of fractal dimension of acoustical wave log curve and restivity log curve and by experiential discriminance plate of reservoir type in l area of qx oil field

    因此，對該區裂縫性儲集層的類型識別、孔滲特徵的測井地質解釋以及儲層裂縫的發育和分佈規律進行深入的研究便成為本文研究的出發點。為此，本文從測井地質的角度，針對當前裂縫性儲層測井地質解釋與評價的現狀，在綜合分析當前國內外儲層裂縫的分形分維研究成果的基礎上，利用分形分維方法和技術，通過對archie測井解釋模型中的m指數、 n指數的分形分維特性的深入淺出的論述以及裂縫性儲層段測井曲線分維d _ （ fa ）與m指數的理論推導，根據裂縫性儲層測井曲線形態分維值的地球物理意義? ?曲線變化越復雜，則其分維值d _ （ fa ）越大、裂縫孔隙空間結構越復雜、裂縫孔隙空間結構指數m值越高等特徵，提出了改進的基於盒維數的測井曲線網格覆蓋法，編程計算了裂縫性儲層段常規測井曲線（如聲波和電阻率曲線）上分形分維值及其m指數值，進而從以下三個方面對qx油田l區塊的裂縫油藏進行應用研究，效果十分理想： 1將計算得到的可變的m指數與聲波和電阻率分維之積df _ acrt進行交繪，採用儲層分維值分類技術統計分析這些參數變化的規律，並結合qx油田l區塊儲層類型經驗判別圖版，從而實現qx油田l區塊下白堊統的裂縫性儲層的類型識別。
  2. The carbon nanotubes ( cnts ) are attractive materials for electrodes of supercapacitors due to their superb characteristics : chemical stability, low mass density, low resistivity, and large specific surface area

    納米碳管導電性好、比表面積大、微孔集中在一定范圍內，從理論上講是製作超級電容器的理想材料。
  3. The designs of the pfd, digital filter ocxo and fractional - n counter in the frequency synthesizer unit are discussed, based on the pll theory. in order to improve the precision of pll, some design methods of pfd are given, and its feasibility is validated by the fpga hardware implement

    2 .在鎖相理論指導下，第三章討論了頻率合成器設計中的鑒頻鑒相器、數字濾波器、恆溫壓控振蕩器和分頻電路設計。為了進一步提高頻率合成的精度，文中給出了提高鑒頻鑒相器性能的一些設計思想，結合fpga的硬體設計驗證了其可行性。
  4. The three - order modulator has a 2 - 1 cascaded structure and 1 - bit quantizer at the end of each stage, the modulator is implemented with fully differential switched - capacitor circuits. and then, the discussion will begin by exploring the design of various circuit blocks in the modulator in more detail, i. e., ota, switched - capacitor integrator, quantizer, two - phase non - overlapping clock signal, etc., at the same time, these circuits will be simulated in spectre and hspice. at last, the whole cascaded modulator will do behavioral level simulation by matlab soft and simulink toolbox

    本論文中，首先介紹模數轉換器的各種參數的意義，以及一階sigma - delta調制器和高階sigma - delta調制器的原理;給出解決高階單環sigma - delta調制器不穩定性的方案，引入級聯結構調制器，特別針對級聯結構調制器中的失配和開關電容積分器的非理想特性進行詳細的討論;本設計的sigma - delta調制器採用2 - 1級聯結構和一位量化器，調制器採用全差分開關電容電路實現;同時對整個調制器的各個模塊進行了電路設計，包括跨導放大器、開關電容積分器、量化器、兩相非交疊時鐘等，並利用hspice和spectre模擬工具對這些電路進行模擬測試;最後，利用matlab軟體和simulink工具對整個級聯調制器進行行為級模擬。
  5. On the base of studying imaging theory of lens, the imaging theory of laser confocal scanning microscopy was analyzed in detail in this paper, and the advancement of that the optical fiber was applied to the system was described ; on the base of completed the demonstration for whole project, the experiment scheme was designed ; the relationship between the main parameters of key devices and the resolution was deduced, and the requirements of coupling efficiency and vignetting effects to optical system was analyzed ; the design of optical system and the planar scanning controlling circuit was completed ; a new method was put forward to resolved the inherent non - liner scanning problem of the galvanometer scanner by using software liner controlling in circuit design, and the perfect planar scanning was realized ; at last the low noise, high multiple and non - distortion amplify circuit of photoelectric detector was completed

    本文在透鏡成像理論的基礎上，系統、深入地分析了共焦掃描顯微成像的機理，論述了應用單模光纖的激光共焦掃描顯微成像系統的優點；進行了總體方案的論證，並設計確定了單模光纖激光共焦掃描顯微成像系統的總體方案；從理論上推導分析了解析度要求與試驗系統中相關器件主要參數之間的關系，分析了系統耦合效率和漸暈現象對光學系統的設計要求；完成了方案中光學系統和二維掃描控制電路的設計，並在電路設計中採用了用軟體解決檢流計式光學掃描器（振鏡）非線性問題的新方法，能夠實現較為理想的二維模擬掃描；完成了高增益、低噪聲和低失真的探測接收系統的設計和調試。
  6. Silicon carbide is becoming the most promising semiconductor material for high temperature, high frequency and high power devices because of its superior properties such as wide band gap, high breakdown field, high electronics saturation drift velocity, and high thermal conductivity

    Sic材料由於具有寬禁帶、高臨界擊穿電場、高飽和電子漂移速度、較大的熱導率等優良特性，因此成為製作高溫、高頻、大功率器件的理想半導體材料。
  7. At turn - on, the diode can be considered an ideal switch because it turns on rapidly compared to the transients in the power circuit

    在導通時，與功率電流的瞬態特性相比二極體可以視為理想開關。
  8. Zirconium alloys are employed extensively in light water cooled reactors ( lwr ) as the cladding materials of fuel elements and other structural materials because of the low capture cross - section for thermal neutrons, good resistance to water - side corrosion at elevated temperature, adequate mechanical properties and high thermal conductivity

    由於鋯的熱中子吸收截面小，並具有優異的耐高溫水腐蝕性能、良好的綜合力學性能和理想的熱導率，因此，鋯合金被用作核電站水冷動力堆核燃料元件的包殼材料和堆芯的其它結構材料。
  9. Dissertation explains the theory and characteristices of switched reluctance motor based on its idealy linear math mode. analyseing and researching on control characteristic, control parameters, control strategy and their relationship, thesis designed hardware circuit and software of control system based on the strategy. dissertation discussed the transform function of system and illustrates it is essential to chang parameters in the pid control arithmetic, estimating parameters for the digital pid controller primarily, dissertation also researched on the exciting and protection of igbt

    論文以開關磁阻電動機的理想線性數學模型為理論基礎，對其原理特性進行了說明，對開關磁阻電動機的控制特性（轉速、轉矩） 、可控參數（導通角、關斷角、相電流、繞組端電壓）與控制策略（電流斬波、電壓斬波、角度位置控制等）及它們之間的關系進行了研究和分析。
  10. In chapter two we study the transport properties of a curved quantum wire, such as the mixture of transverse modes, suppress of conductance, local density, abrupt change of transmission phase and so on. these properties is compared to those of a perfect quantum wire

    第二章分析了弧形量子線的模式混合，電導抑制，局域態密度，透射相位突變等性質，並將這些性質與理想直量子線進行了對比。
  11. We have made three - dimension electric conduct grid by hand and we have successfully used it as anode grid in lead - acid battery. this kind of three - dimension electric conduct grid can improve the utilization of pam by 7 - 9 % in different discharge current density and can reduce the plate electrochemical impedance to one tenth of the normal plate. also this kind of grid can improve the marginal reaction current density in a certain degree

    我們通過手工製作了三維導電體板柵，並成功的應用於電池的正極作為正極的板柵，這種三維導電體板柵能夠在各種不同的放電電流密度下提高正極活性物質利用率7 9 ，能夠使電池正極板的電化學阻抗降低到普通板柵的1 10左右，使正極板的極哈爾濱j _程大學碩十學位論文限反應電流密度略有所提高，但是這種板柵的耐腐蝕性能很不理想，使得所製作電池的壽命很短。
  12. We have investigated transport properties of electrons in magnetic quantum structures under an applied constant electric field. the transmission coefficient and current density have been calculated for electron tunneling through structures consisting of identical magnetic barriers and magnetic wells and structures consisting of unidentical magnetic barriers and magnetic wells. it is shown that the transmission coefficient of electrons in a wider nonresonance energy region is enhanced under an applied electric field. the resonance is suppressed for electron tunneling through double - barrier magnetic ( dbm ) structures arranged with identical magnetic barriers and magnetic wells. incomplete resonance at zero bias is changed to complete resonance at proper bias for electron tunneling through dbm structures arranged with different magnetic barriers and magnetic wells. the results also indicate that there exist negative conductivity and noticeable size effect in dbm structures

    對磁量子結構中電子在外加恆定電場下的輸運性質進行了研究.分別計算了電子隧穿相同磁壘磁阱和不同磁壘磁阱構成的兩種磁量子結構的傳輸概率和電流密度.計算結果表明，在相當寬廣的非共振電子入射能區，外加電場下電子的傳輸概率比無電場時增加.對于電子隧穿相同磁壘磁阱構成的雙磁壘結構，共振減弱；對于電子隧穿不同磁壘磁阱構成的雙磁壘結構，無電場作用時的非完全共振在適當的偏置電壓下轉化為完全共振，這時的電子可實現理想的共振隧穿.研究同時表明，磁量子結構中存在著顯著的量子尺寸效應和負微分電導
  13. Electromagneto - thermoelastic waves with two relaxation times in a perfectly conducting medium

    理想導體中具有兩個鬆弛時間的電磁熱彈性波
  14. According to experiments, lab6, with high conductivity, good heat stability and chemical stability, low work function, and active cathode appearance, has become an ideal material for field emission array cathodes

    經試驗證明，六硼化鑭（ lab6 ）具有高導電率和良好的熱穩定性、化學穩定性、低功函數以及活性陰極表面，因此從理論上成為了場發射陰極的理想材料。
  15. Carbon nanotubes ( cnts ) have attracted great attention in material science and technology for their semi - one - dimension structure, good electrical conductivity, excellent chemical and mechanical properties. especially for their high aspect ratio and emitting electron at low voltage, cnts have been considered as one of the most promising material for field electron source

    碳納米管具有準一維的結構、良好的導電能力、化學穩定性和機械強度，由於其極高的長徑比而且能在較低的宏觀電場下發射電子，因此被認為是較為理想的場發射材料。
  16. In view of the very small leakage currents in the blocking state ( reverse bias ) and the small voltage in the conducting state ( forward bias ) as compared to the operating voltage and currents of the circuit in which the diode is used, the i - v characteristics for the diode can be idealized

    與二極體的工作電流和電壓相比，在阻斷（截止）狀態下漏電流很小，在導通狀態下電壓比較小，因此二極體的電流-電壓（伏安）特性可以理想化。
  17. Due to its intrinsic merits, such as wide band gap, high electron saturated drift velocity, high melting point, good coefficient of thermal conductivity, anti - radiation and good chemical stability, gallium nitride as a direct band gap semiconductor has become the promising material for the application of short - wave light - emitting devices and high temperature, high frequency and high power electronic devices

    Gan是直接帶隙半導體材料，以其禁帶寬度大、電子飽和漂移速度大、熔點高、熱導率高、抗輻射能力強和化學穩定性好等優點成為製造短波長光發射器件及高溫、高頻、大功率電子器件的理想材料。
  18. In the latest years, people have designed and made many types of magnetic micromotors, but there are still many problems and much work w hich needs to do about the working principal, design theory and experimental research of magnetic micromotors, this dissertation was just aimed at these problems and did following work : first, on the basis of analying and comparing the working principals and structures of available magnetic micromotors, this dissertation proposed a new type of magnetic micromotor, introduced its structure, controlling methods and the features. according to the basic principles of the fixed - point movement of the rigid body, the dissertation revealed the moving relationship between the rotation of the inner magnetic field of the motor and the rolling of the rotor, presented the moving equation of the rotor and the calculation formula for the rotation ratio between the the inner magnetic field and the rotor, and so made clear the relationship between the structure parameters and the moving characteristics of the motor

    十年來，人們已經設計製作出了多種形式和結構的電磁微電機，但是有關電磁微電機的設計理論和實驗研究仍然處于探索完善階段，本文正是針對這方面的問題以電磁式微電機為研究對象做了以下工作：首先，在對電磁式微電機的各種工作原理和結構方案進行深入研究和分析比較的基礎上，本文首次推出了「端面搖擺式電磁微電機」的設計思想，介紹了其結構原理、控制原理和該電機的特點，並從剛體定點運動的基本原理出發，揭示了電機內部磁場的旋轉與轉子滾動之間行星減速的運動關系，推導出了轉子的運動方程和電機旋轉磁場與轉子的減速比計算公式，從而明確了電機結構參數與電機運動特性的關系。
  19. However, only ideal inductors can be called when circuits are simulated, hysteresis phenomena of cores are often regardless of, which results in the evident difference of the simulations and the real, and the simulating results couldn ’ t guide real works at present

    由於進行電路模擬時只能調用軟體自帶的理想感性元件，忽略了磁芯感性元件的磁滯特性，因此，造成模擬結果與實際相差很遠而不能指導實際工作。
  20. Copper powder is one of the ideal substitution products of the pdag electrode of multilayer ceramic capacitors ( mlcc ). it is excellent in price and electrical conductivity for preparing mlcc. however, copper powder is active in chemical property and can be oxidized easily in the air

    銅粉作為mlcc貴金屬內電極的理想替代產品之一，價格低廉，並具有與銀相媲美的良好導電性，但其化學性質活潑，在空氣中易被氧化為不導電的氧化亞銅和氧化銅。
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