比導電率 的英文怎麼說

中文拼音 [bǐdǎodiànlǜ]
比導電率 英文
specific conductivity
  • 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...
  • 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...
  • 率 : 率名詞（比值） rate; ratio; proportion
  1. In digital relay, the percentage of noise will increase rapidly with the increase of sampling rate when derivation calculus is substituted by sampled difference term. to solve this problem, a new method using fragment function integrated with the least square algorithm is proposed in this paper. the influence of white noise is greatly reduced and the accuracy of the dead angle calculation is nicely improved after adopting the new method

    在數字式保護中，如果用差分代替求導將導致噪聲的百分比誤差隨著采樣頻率的提高而劇增，本文對此進行了分析並提出了用分段樣條函數最小二乘法來計算電流波形的導數值，以便在提高采樣率的同時降低噪聲誤差的影響，並將其應用於基於32位浮點dsp的新型變壓器保護裝置。
  2. In adding - acid system : the resistivities of different lithotypes " cp tend towards being constant and equal when weight percentage of aniline exceeds 50 % ; because of the structure difference of different lithotypes, the polymerizing places and processes are different ; the resistivities of vituain / pan and fusain / pan reach the lowest point respectively when ( ntloisiog / an is 0. 6, 1. 0 ; the resistivities of cp decline fast and tend towards being constant along with the reduction of diameter of coal. in not adding - acid system : the resistivities of different lithotypes ' cp decline evenly ; it is found on the crossed experiment of cp, that ( nflsaog / an mole proportion is the most important factor to influence output ratio of cp and the weight percentage of aniline is the most important factor to influence resistivities of cp. according to the result of the crossed experiment of cp

    在有外加酸體系中：苯胺百分含量大於50時，不同煤巖組分的電阻率趨于恆定和一致；由於不同煤巖組分結構上的差異，導致苯胺聚合場所和聚合過程的不同；當過硫酸銨/苯胺摩爾比為0 . 6 ， 1 . 0時，鏡煤-聚苯胺導電材料電阻率和絲炭-聚苯胺導電材料的電阻率分別達到最低值；在無外加酸體系中：不同煤巖組分/聚苯胺導電材料的電阻率隨著聚合時間的增加而均勻下降，並在8小時左右達到恆定；在對絲炭-聚苯胺導電材料進行的正交試驗中發現：過硫酸銨/苯胺摩爾比對產率的影響最大，苯胺重量百分比對產率影響最小，而對產物電阻率影響最大的是苯胺重量百分比。
  3. That is still poor compared with silicon, but it is a big improvement on what was previously possible

    與硅電池相比，導電塑料電池的效率仍然很低，但與原先非硅材料電池的效率相比已有顯著的提高。
  4. The membrane properties were found to be dependent upon the content of styrene. the membrane physic - chemical properties compare to nafion 117 except that their chemical stability has to be further improved to make them acceptable for practical use in the proton exchange membrane fuel cell. the proton transport through the membrane follows the " liquid - like " proton conductivity mechanism y and the water balance is important for the working condition of the fuel cell

    對磺化膜的研究分析表明：膜的性能參數如離子交換容量、吸水率、水合系數、形體穩定性、導電性能、化學與熱穩定性等依賴于膜中苯乙烯含量，且接枝苯乙烯相互間的位阻效應對膜性能影響很大；膜的性能可與nafion膜相比較；質子在膜中的傳導遵循「似液體」質子傳導機理；電滲析與擴散作用使膜保持水平衡。
  5. Secondly, the sorts and weights of the components of the gel electrolyte are optimized, and a gpe with excellent performance is prepared, whose ion conductivity reachs 9. 2ms / cm. we analyze all the factors influencing the performance of the gpe, and study many performances of the gpe, including the microstructure, conductivity performance, liquid electrolyte holding ability, electrochemical stability, thermodynamics stability, and interfacial stability between electrolyte and electrode, et al

    其次，對gpe各組份進行了改進和優化，找到了最佳的配比，制備了性能良好的凝膠電解質，該gpe的室溫離子電導率最高可達9 . 2ms cm ；考察了影響凝膠電解質性能的各種因素；研究了凝膠電解質的微觀結構、導電性、保液性、電化學穩定性、熱力學穩定性以及電解質與電極間的界面穩定性等性質。
  6. B ) equivalent circuit method and finite element analysis ( fea ) to compute the static force are presented, the results obtained by each method are compared one with the other. c ) the results of dynamic simulation by means of the software, ansoft show the hlfm " s characteristics when the motor works in the special frequency and single stroke and the conditions used for position control. d ) the measured static thrust - displacement characteristics and the dynamic characteristics during starting show good correlation with the calculated results

    在設計並製作了實驗樣機的基礎上所做的研究內容包括； （ 1 ）分別用能量法和麥克斯韋張量法推導電磁力的計算公式，並討論他們的不同應用范圍； （ 2 ）分別用等效磁路法和有限元法作直線力電機的靜特性分析，並比較分析它們的計算結果； （ 3 ）用有限元模擬軟體做直線力電機動態特性的模擬，分別分析直線力電機的頻率特性、動子開合閘特性和開環位置控制的工作特性； （ 4 ）做直線力電機的靜推力?位移特性實驗和動子開合閘的動態實驗，並將實驗結果與計算結果進行對比，實驗驗證了計算模型及計算方法的正確性。
  7. 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。
  8. Al - doped zno ( azo ) thin films are emerging as an alternative potential candidate for ito ( sn - doped in2o3 ) films recently not only because of their comparable optical and electrical properties ( high optical transparency in the visible range, infrared reflectance and low d. c. resistivity ) to ito films, but also because of their higher thermal and chemical stability under the exposure to hydrogen plasma than ito

    Al摻雜的zno薄膜，由於具有與ito （ in _ 2o _ 3中適量摻雜sn ）薄膜相比擬的對可見光的高透過率和高電導，又因其在氫等離子體中的高穩定性等優點，已成為替代ito透明導電薄膜的研究熱點。
  9. In recent years, al - doped zno ( azo ) thin films has become a hot issue of transparent conductive thin films field and preferred materials instead of ito films not only because of their comparable optical and electrical properties ( high optical transparency in the visible range, low electrical resistivity ) to ito films, but also because of their lower price and higher thermal and chemical stability under the exposure to hydrogen plasma than ito

    近年來，由於al摻雜的zno薄膜（ azo ）具有與ito薄膜相比擬的光電性能（可見光區高透射率和低電阻率） ，又因其價格較低以及在氫等離子體中的高穩定性等優點，已經成為替代昂貴的ito薄膜的首選材料和當前透明導電薄膜領域的研究熱點之一。
  10. 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
  11. In the paper a gmc filter with a cutoff frequency of 29. 8mhz is implemented. an effective improvement is made in cmfb ( common mode feedback ) through using a differential amplifier with four inputs. transconductors are tuned through comparing two voltages, which helps to stabilize the cutoff frequency

    文中實現了跨導電容濾波器，其截止頻率達到29 . 8mhz ；採用四輸入端的差分放大器使共模反饋得到了有效的改善；通過簡單的電壓比較實現跨導器的調諧，有助於穩定截止頻率。
  12. Polymers have had an edge over kodak - type small - molecule devices in power efficiencies because the greater electronic conductivity of the polymer layers allows lower operating voltages

    與柯達型的小分子裝置相比，聚合物在用電效率上見長，由於聚合物層的導電率較高，所以操作電壓可以較低。
  13. For the operating frequencies of modern radars and guidance 、 electronic countermeasure system 、 communication system 、 remote sense and remote measurement system expand to millimeter band step by step, the operating frequencies of t / r module raise ceaselessly. simultaneity millimeter wave t / r module which has the advantages of small dimension, lightweight, wide band is more suitable to the requirement of modern army and communication system. this paper is mainly referred to the research of t / r module in ka band

    現代雷達與制導、電子對抗、通信、遙感遙測系統的工作頻率已逐步由微波波段擴展到毫米波波段，因此t / r組件的工作頻率也在不斷的上升，同時，毫米波t / r組件與微波t / r組件相比具有尺寸小、重量輕、頻帶寬等優點，更適合現代軍事和通信系統的要求。
  14. In the fourth chapter, a fourth - order chebyshev low - pass filter employs new low voltage, highly linear, wide inputting range transconductor is proposed, then we presents a new circuit to tune gm value of transconductor accurately, which employs a new switched - capacitor circuit to change the bias current of transconductor, a third order elliptical function low - pass filter with accurate tunable frequency has been designed using transconductor that is not only with voltage common - mode negative feedback, but also with varying bias - triode transistors which can improve the linearity of this circuit

    第四章：提出了一種新的低電壓、高線性度、寬輸入范圍跨導，並由此設計實現了四階切比雪夫（ chebyshev ）低通濾波器，接著提出了一種寬輸入范圍且具有電壓共模負反饋的全差分跨導，並採用一種新的開關電容電路實現跨導值gm精確可調，從而可以設計得到高性能具有精確截止頻率的跨導-電容三階橢圓函數濾波器。
  15. Because p - si is of more special characteristics, comparing to a - si and c - si, firstly, i set forth electrical features of p - si film and acknowledge profoundly electrical mechanism of p - si film. then three parameters of laser annealing, including laser frequency -, accepted - pulse - times and laser power density are studied how to influence crystallization of p - si

    因為多晶硅和非晶硅及晶體硅相比具有更獨特的特點，所以我們先闡述了多晶硅薄膜的電學特點，對多晶硅的導電機理有了深刻的了解；然後研究了激光頻率、受光次數和激光功率密度三個參數對晶化多晶硅的影響。
  16. So it has low electrical conductivity and low thermal conductivity

    所以它的導電率比較低，並且導熱率也非常低。
  17. 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。
  18. Compared to other conductive fillers, carbon black has the following advantages : gaining random specific conductance by controlling contents, cheap, a great variety of cb with specific properties to choose etc.

    炭黑與其它導電填充劑相比，具有控制添加量能得到任意導電率、價格低廉、品種多等優點。
  19. Namely : ( 1 ) the cf can be dispersed by methyl cellulose and superfine silica fume used together and the electrical resistivity is low. so it provides a good way for cf dispersion ; ( 2 ) the results on cf cement - based fgm include four aspects. firstly, the electrical resistivity is influenced little by cf content increase after the conductive circuit formation

    研究結果表明： （ 1 ）採用甲基纖維素和超細硅粉復合摻拌的分散辦法，使纖維充分分散，導電效果比較理想，為纖維分散提供了一條優良的途徑； （ 2 ）碳纖維混凝土中，導電網路形成后，纖維含量繼續增加對電阻率的影響不大。
  20. Since there are only few papers about the topic, the simulating result have no alternative but to compare with the data of the upper inhomogeneous terrain. the similar trend is found for the two results, and larger propagation attenuation will follow the higher frequency or larger conductivity of the medium

    由於有關覆蓋層傳播方面的文獻資料幾乎沒有，所以只能把結果與地表均勻巖層的數據進行比較，結果表明平面波法和通信公式法計算得出的結果完全一致，並與在地表均勻巖層傳播結果趨勢類似，而且隨著頻率的增高或導電率的增大，傳播衰減也增大。
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