結勢壘 的英文怎麼說
中文拼音 [jiēshìlěi]
結勢壘
英文
junction barrier-
Classifying agricultural products according to resource intensity of, the research choused and analyzed representative products of different types. by measuring international competitiveness of china ' s agricultural products, the thesis anatomies their changing trend, and analyzes some products which have comparative advantage but have n ' t competitiveness in the practice. on the basis of this analysis, the thesis carries through theory and demonstration research from four aspects, factor, demand, trade bulwark and rivals, and analyzes the reasons why these products " competitiveness became lower
研究通過對中國主要農產品的競爭力的測定，詳細剖析了我國近年來農產品競爭力的變動趨勢，對一些生產上具有比較優勢，而實際貿易中卻不具有競爭力的農產品進行了分析對比，在上述分析基礎上，研究將影響農產品國際競爭力的因素分為要素、需求、貿易壁壘和同業競爭四大類，並分別從各類因素入手進行理論和實證研究，分析這些農產品競爭力減弱或不具有競爭力的癥結所在。Schottky barrier diode is a kind of majority carrier device, using the contact barrier formed between metal and semiconductor to work. it has the advantages of low turn - on voltage and high response frequency, compared with pn junction diodes
肖特基二極體是利用金屬與半導體之間接觸勢壘進行工作的一種多數載流子器件，與普通的pn結二極體相比，它具有正向導通電壓低，響應速度快等優良特性。The thesis includes three parts : firstly, previous study and latest advance of molecular motor in biology are outlined, including myosin ' s and kinesin ' s construction and function, the latest advance of molecular motor in constructional biology ; secondly, the latest advance of molecular motor in physics is reviewed, including the general view of brownian motor and two examples of molecular motor, one being related to two kinds of flashing potention energy, the other being related to electronical bipole ; and finally, the model on unidirectional motion of molecular motor is in detail come up with, and especially, the interact ion between two heads is taken into account, followed by the construction of langevin equation and fokker - planck equation involved in the model. by using solutions of fokker - planck equation, unidirectional motion mechanism of molecular motor is analyzed
本文內容包括：首先綜述生物學領域分子馬達研究的最新進展，內容安排為：肌球蛋白的結構和功能，驅動蛋白的結構和功能，肌球蛋白和驅動蛋白定向運動機制的結構生物學方面的最新進展；其次綜述並分析了當前研究分子馬達定向運動機制的幾種物理模型，內容安排為：分子馬達運動的基本觀點和建構模型的一般方法，勢壘的兩態漲落誘導的分子馬達運動模型，分子馬達定向運動的偶極子模型；最後討論雙頭相互作用的分子馬達模型，內容安排為：先詳細論述模型的構建，再建立langevin方程和fokker - planck方程，接著用差分的方法求解出fokker - planck方程的解，然後分析和研究分子馬達定向運動的機制。The shapes of the photoionization cross - section varying with the photon energy in the two cases are different. we have compared the results with that of previous work
對于每一種情況都與前人的結果做了比較，同時還與無限深勢壘的情況做了比較The industrial competitiveness is analysed above the following aspects : market supply and demond, price competitiveness, comparative superiority, technical potentialities and support policies. we raise some tacticses to the sustained growth of sugar industry, those are superior producing area construction, enhancing the key technical competitiveness, trade protection and support under the frame of wto, particularly disscuss the construction of sugar crop base and quality standard technical barrier. in the end, some policies for the sustained growth of sugar industry are provided
文中從市場需求、價格競爭、比較優勢、技術發展潛力和政策保障等方而並結合案例分析了我國蔗糖產業發展的競爭潛力;提出了產業可持續發展的策略:建設優勢產業帶、培育核心技術競爭力、在w 』 l ， （ ）框架下實施國內保護和支持，還分析了應用「綠箱」 、 「黃箱」政策加強糖料基地建設和構築質量標準技術壁壘的建議，以及從宏觀方面推動蔗糖業可持續發展的政策措施保障。Therefore, it is an efficient way to dilute cro2 granules for enhancing extrinsic mr, due to the formation of new metal - insulator microstructure, which adjusts natures of barrier. in much of work published, much interest involves the fabricating technique and magnetotransport of cro2 ferromagnet, experimentally
因此，採用cro _ 2 -絕緣顆粒復合的方法，以形成新的微結構來調整顆粒界面狀態和隧穿勢壘性質，是降低外磁場、增強外稟磁電阻效應的有效手段。The solution is that with the first - mover advantage, establishing the barrier or isolating mechanism by introducing differentiation ( e. g., reputation ) to avoid the price war ; according to the aimed position, applying different policies on different customers ; providing overall support for the implementing of the strategy. the solution would be instructive to the strategy formulating of know - how small business
通過公司c的競爭戰略設計，本文提供了一種思路：利用先動優勢在自身與潛在競爭者之間引入差異化（如聲譽） ，建立針對潛在競爭者的壁壘或隔絕機制，從而改善市場結構，獲得支持長遠發展的經濟租金；根據企業的定位，針對不同的顧客制定不同的策略；為戰略的實施提供全方位的支持與保證。Gaas / algaas quantum well photodetectors ( qwips ) are new type devices and progressed rapidly in recent 20 years. qwips utilizing intersubband absorption between gallium arsenide ( gaas ) well and aluminum gallium arsenide ( alxga1 _ xas ) barriers were perfected. therefore, the ability to accurately control the band structure and hence the spectral response, as well as both established technology for growing and processing gaas optical devices and commercially available large area vlsi gaas ic ' s, makes gaas / algaas qwips attractive devices for use in very large focal plane arrays ( fpas ), especially available in the range of long wavelength 8 - 12 urn
Gaas algaas量子阱紅外探測器（ qwips ）是近二十年來迅速發展起來的一種新型紅外探測器，它成功地利用了gaas勢阱和al _ xga _ （ 1 - x ） as勢壘之間的子帶間吸收，使之具有能帶結構可精確設計從而獲得指定光譜響應的特點，加之成熟的材料生長技術、器件工藝，以及商業上可獲得大面積的vlsigaas集成電路，使得gaas algaasqwips尤其適宜製作8 12 m長波范圍的大面陣探測器。The result does not accord with the corresponding relation between the classical and the quantum. in quantum mechanics, because the particle has wave - corpuscle duality, the particle can tunnel the potential barrier which is higher than its energy
這說明我們普遍認為的經典可積量子也可積的觀點在有些情況下並不適用，之所以會出現這個結果，與量子力學中粒子具有波粒二象性有很大關系，粒子的波動性使它能夠貫穿高度大於它自身能量的勢壘。In the paper the market structure of china automobile industry is omni bearing studied, the scale economy, product differentiation, barrier for entering and withdrawing and concentration degree of production are deeply demonstrated. the characteristics and causes of the market structure are revealed. based on comparison with developed countries, the development trend of our country s automobile industrial market structure is defined
接著，從規模經濟、產品差異化、進入與退出壁壘及生產集中度等角度出發，對中國汽車產業市場結構進行了全方位的研究，揭示了其特徵與成因;並在與發達國家比較的基礎上，明確了我國汽車產業市場結構發展趨勢。On the basis of one - electron hartree - fock approximation, the extended - ion method and ab initio method have been used to investigate the f center migration between f ~ - layers, br ~ - layers and from f ~ - layer to br ~ - layer. we have calculated the energy barrier of these three f center migrationes and energy of f center, exciton energy. the results of f center and exciton are in good agreement with the experimential data
本文是在單電子hartree - fock近似的基礎上採用擴展離子方法和全電子從頭計算方法，研究了bafbr ： eu ~ （ 2 + ）晶格中的f ~ -離子層間的f心遷移， br ~ -層的f心遷移和f ~ -離子與br ~ -離子層間f心遷移過程中的能量勢壘和f心基態、激發態以及激子能量，對于f心和激子的研究結果與實驗符合的很好。By means of the calorimetric experimental results and the temperature dependence of heat capacity differences, four kinds of temperature dependences of configurational entropy, dielectric relaxation index and cooperatively rearranging region are studied, on the basis of configurational entropy theory on cooperatively rearranging region in disordered amorphous materials by the methods of the relationship between configurational entropy and heat capacity difference, and the equation of relaxation time with activated energy barriers
摘要基於無序非晶材料「關聯重排區域」的構型熵理論，運用構型熵與熱容量差的關系式、弛豫時間與活化勢壘的基本公式，及聚合物量熱學的實驗結果和熱容量差與溫度的基本關系，研究了4種情況下構型熵、介電弛豫指數和關聯重排區域大小的溫度變化關系。And pbo single crystal nanowire was successfully prepared with new method. the results show that the amorphous matrix of the powders almost completely transforms into crystalline perovskite phase after 600 calcinations. the mean grain size in pt / tb powder is about 23nm that is smaller than that of pt powders
鈣鈦礦相的晶軸比c / a比未摻tb的pt粉末低，具有贗立方結構的特性，降低了從立方相向這種四方相轉化的勢壘，從而有效地抑制了較高溫下焦綠石相的產生。We define the recombination time of excess electrons in p field as the minority carrier lifetime. in theory, we developed the equation between excess minority carriers lifetime and the open - circuit voltage decay ; moreover, the effect of capacitance to general open - circuit voltage is also investigated. both different efficiency solar cells are measured by the method and showed the relations between the minority carrier lifetime and the performance of solar cells, which provides great useful guidelines for fabricating high - efficiency silicon solar cell in industry
根據太陽電池的工作原理，詳細地論述了用脈沖光源照射n / p結太陽電池時光電壓的產生，理論上給出了注入p區的電子復合帶來的開路電壓與少子壽命的關系，也研究了n / p結勢壘電容放電對開路電壓衰減的影響關系，推導了利用開路電壓隨時間衰減的關系來測量少數載流子壽命的理論公式。Magnetoresistance effect of double - barrier magnetic tunneling junction applied in spin transistors
雙勢壘磁性隧道結的磁電阻效應及其在自旋晶體管中的應用The seemingly mcnt content in pt can be controlled by repeating the coatings of the film and increasing the mcnt doped concentration of the sol. the heterogeneous nucleation at the interface between mcnt and pt was induced by the doption of mcnt. the films which were calcined at 500 ? had formed perovskite and large crystal content, means that perovskite formed at the lower temperature, in conclusion, the crystalline ability of pt was improved by the doption of tb and mcnt
納米碳管的引入，使得體系在納米碳管和pt之間的界面產生非均態核化，隨pt薄膜成核勢壘的降低，摻納米碳管的pt薄膜在較低溫度下即可形成鈣鈦礦相，在500的較低溫度，就可獲得結晶完整且己具有很大結晶量的薄膜。In this paper, first, the study of the distribution of electromagnetic field, energy, power, reflection coefficient and transmission coefficient in waveguide with piecewise different dielectric constants are studied. then, the behavior of propagation of am signal and gauss pulse signal through the waveguide are simulated by magic code ， and the plots of electromagnetic field, energy, ponyting vector and their spectrums at different time and different position are obtained. and, the group velocity and energy velocity of wave packet through barrier are calculated
從90年代開始， emig和martin 、 landauer等人研究了分段填充不同介質的波導中的電磁脈沖的傳播。在本論文中，作者首先推導出分段填充不同介質的波導中的電磁場分佈、能量、傳輸功率以及反射系數和傳輸系數的表達式，然後，採用magic程序模擬了這種波導結構中電磁波的傳播情況，得到了在不同時刻和不同位置處的電磁場分布圖、能量圖、坡印廷矢量圖以及它們的頻譜圖，並由模擬結果計算了波包穿越勢壘的群速和能量速度。The results indicate that carriers recombining and causing luminescence in two organic layers by traversing their interface. the influence of barrier height of transport layer on current density, recombination current and recombination efficiency of the devices is great
結果表明：雙層器件的發光是載流子隧穿內界面后在兩有機層中的復合發光，輸運層的勢壘高度對載流子電流密度、復合電流密度以及器件的復合效率影響很大。Influence of polarizations and doping in algan barrier on the two - dimensional electron - gas in algan gan heterostruture
異質結構中極化與勢壘層摻雜對二維電子氣的影響It was concluded that sequence of depositing process was the key factor that determined the results of the experiments. 3
3 .製成了al / c _ （ 60 ） / cu結構的肖特基勢壘二極體並對其電學特性做了研究。分享友人