電子勢能 的英文怎麼說
中文拼音 [diànzishìnéng]
電子勢能
英文
electronic potential-
With the use of finite method we have developed computer simulation software for vacuum microtriodes with wedge - shaped and cone - shaped cathode on the basis of stduying deeply the field emission theory of vacuum microelectronics. the software included field section, grid point numbering, and the calculation of electric currents, transconductance and cathode capacitance, moreover, it can simulate the properties of vacuum microeletronic with variant structures and sizes. the relationship was studied and simulated among electic properties and device structures, sizes and cathode materials etc. the optimized design of vacuum microtiode was proposed
本文在深入研究真空微電子器件場致發射理論的基礎上，根據圓錐形、楔形陰極真空微電子三極體的不同特點，分別建立了物理和數學模型，在考慮空間電荷密度影響的前提下，以有限元法為基礎採用迭代的方法計算出真空微電子三極體內的電勢分佈情況，繪制出了等勢線、電子軌跡線，並得到了器件電學性能隨幾何參數的變化情況。By making some assumptions, collision frequency were presented. then the the flocculation kinetics model was established through population balance equation. comparison of experimental data and modeling results indicate that there are the same trend between the two. so the model can predict floes number and size during flocculation of yellow river ' s loess particles without using empirical parameters. the tem and sem were used to obsever floes in the study of floe structure. the flocculation was divided as flocculi, floc and floe aggregate. the floes structure model was established by assumption that particles position in floe accords with tetrahedron. the fractal dimension of model and experimental floes was found to be coincidentso the model can reflect the structure of flocs formed in flocculation of yellow river ' s loess particles by macromolecule flocculant at a certain extent
最後，本文還對絮凝動力學和絮體結構進行了研究，在前人研究的基礎上，針對高分子絮凝黃河泥沙，對絮凝過程作了一些符合試驗條件的假設，建立了顆粒碰撞頻率表達式，應用了顆粒數量平衡方程，從而建立了絮凝過程的動力學生長模型，模型計算結果與試驗數據對比表明，二者趨勢一致，在沒有使用經驗參數的情況下基本上能夠描述黃河泥沙絮凝過程中絮體數量和尺寸分佈的變化過程；對絮體結構的研究中，應用掃描電子顯微鏡和透射電子顯微鏡對絮體進行了觀察，將絮體分為絮粒、絮團和絮網三個不同的生長階段，通過假設顆粒結合位置符西安建築科技大學博士學位論文合正四面體，建立了絮體結構模型，計算得到的模型絮體分形維數基本與試驗中的實際絮體相符，在一定程度上能夠反映高分子絮凝黃河泥沙生成的絮體結構。The industrial development in shandong should be located on the above - mentioned superior industries, known as the industries which is " inoculated " by the high and new technology and upgraded such as the leading industry like mechanism, electron, petrifaction and etc, or the traditional industry like energy source, textile, foodstuff, metallurgy and etc, or the high and new technique industry like electronic message, biological engineering, ocean and etc. correspond with the development and grandness of these strategic industry, the famousbrand products including the products of the household appliances, the utility type sedan, the refine chemical industrial products, computer software, halobios pharmacy, industrial revelation ware and etc should be created gradually, and then improve the structure of the industrial products
山東省工業發展應定位於上述優勢產業，即經過高新技術「嫁接」和換代升級的機械、電子、石化等主導產業，能源、紡織、食品、冶金等傳統產業，電子信息、生物工程、海洋等高新技術產業。相應于這些戰略產業的發展和壯大，逐步創造出包括家電、經濟型轎車、精細化工產品、計算機軟體、海洋生物制藥、工業新材料製品等在內的名牌產品，並進而改善工業產品結構。隨著中國加入世貿，為應對經濟全球化的挑戰，關于產業競爭力的研究成為一大熱點，但以往的研究都側重於從國家或企業的角度考慮問題，本文試圖從區域經濟的角度研究產業競爭力，探索提升產業競爭力的途徑，為研究中國產業國際競爭力提供借鑒和參考。Abstract : the effect of correction of self - consistent potential on electronic structure in simple cubic nanocrystal particles is calculated by means of the green ' s function method in the tight - binding approximation, taking only the nearest neighbor matrix elements into account. the numerical results show that the electronic energy spectrum is shifted, the chemical potential is not equal to the atomic energy level, the electronic density at each lattice point is changed, and the variation of electronic density at surface lattice point is the largest
文摘:在緊束縛近似下，只計及最近鄰的矩陣元，採用格林函數計算了自洽勢修正對簡立方納米晶體顆粒的電子結構的影響，發現電子能譜發生了移動，化學勢不等於格點原子能級，各格點的電子密度也發生了變化，其中以表面格點的電子密度變化最大。Electrons from the metal will have to surmount the potential barrier to enter the semiconductor.
金屬中的電子必須克服這個勢壘層才能進入半導體。In the first chapter of the dissertation, we review the development history and the trend of xerography technology, present a series of organic semiconductive materials and their device structures, and bring forward three ways to prepare single - layered photoconductor with high performance by dimixing, preparing nanomaterials, and synthesizing new organic electron transport materials
論文第一章首先評述了電子照相技術的發展歷史和發展趨勢，同時介紹了有機光電導材料的種類和光電導體的結構，提出可通過復合、納米化和研製新型的電子傳輸材料三種手段來制備高性能有機單層光電導體。To describe the development trend of metallurgical automation equipment in the aspects of system technology, measurement instrument, artificial intelligence application and power electronic technology at the beginning of 21st century and puts forward the strategy for promoting the development of metallurgical automation equipment technology in china
闡述了下世紀初葉冶金自動化裝備在系統技術、檢測儀表、人工智慧應用和電力電子技術等方面的發展趨勢，提出了發展和促進我國冶金自動化裝備技術和工程承包能力的對策。This center mainly solves the problems of emv transfer, intelligent ic card issuance and issuance for increasing e - wallet application. its advantages lie in combining card - issuing of emv debit & credit application and e - wallet application in one time so that cost of recall reduces and meanwhile card e - wallet application increases ( small amount wallet and the consumption score - accumulation purse. ). it raises the card efficiency
該中心主要解決emv遷移發行智能ic卡增加電子錢包應用的發行，其優勢在於將emv借貸記應用與電子錢包應用一次發卡完成，降低了卡片回收成本同時又增加了卡片電子錢包應用（小額消費金融錢包、消費金額積分錢包） ，提高了卡片的使用率。The combination of negative electron affinity ( nea ) photocathode and micro channel plate ( mcp ) brings the iii image intensifier. because of its high performance, the iii image intensifier has been developed rapidly and used widely in the short several decades after it had been found
負電子親和勢（ nea ）光電陰極和微通道板（ mcp ）的結合產生了三代像增強器，由於這類像增強器具有優良性能，在發現后的短短數十年中獲得了迅猛發展和廣泛應用。To drive the development of e - business and to keep our administration of domain names in line with international trends, the government took the lead to thoroughly review the system and seek community views through public consultation in 2000
為促進電子貿易的發展，以及確保本港的域名管理能緊貼國際趨勢，政府率先於2000年全面檢討域名管理體制，並就此事諮詢公眾的意見。Finally, paper use marketing theory and method, according to actual demand and vegetables development trend of consumer, propose in order to set up a new channel, its concrete train of thought is : make great efforts to change government ' s function, accelerate setting up the material flow of vegetables and electronic business system, fully utilize enterprise ' s advantage, support the transportation and sales organization of vegetables and agricultural technology association energetically
在最後兩章，論文運用市場營銷學的理論和方法，根據武漢市消費者的實際需求和蔬菜市場的發展趨勢，提出了以建立扁平化、快捷化蔬菜營銷渠道為方向，對現有渠道進行優化和整合的方案，其具體思路是：努力轉變政府職能，加快建立蔬菜物流和電子商務系統，充分利用企業優勢，大力扶持蔬菜運銷組織和農業技術協會。From the paper, it can be concluded that it is necessary to make many intellectual electronic equipments access the internet in the new era with the development of the computer, communication and the network technique
隨著計算機、通信及網路技術的發展，實現大量智能電子設備與internet的結合，即電子設備web化是信息時代的新趨勢。From the paper, it can be concluded that it is necessary to make many intellectual electronic equipments access the internet in the new era, with the development of the computer, communication and the network technique, and the embedded network platform based on the advanced x86 microcontroller has the characteristics of simplity, clarity and high - adaptability in the applications, it can be widely applied to many industrial fields such as power automation, communication terminal, monitoring and measuring system on line, embedded web, network protocol transformation, intellectual instruments etc
縱觀全文，得出如下結論：隨著計算機、通信及網路技術的發展，實現大量智能電子設備與internet的結合，即電子設備web化是信息時代的新趨勢。基於本文方案構建的高端x86嵌入式網路平臺具有應用開發簡單快速、靈活適應的特點，可廣泛應用於電力自動化及各種電氣測控設備、通訊終端、在線監測系統、嵌入式web 、網路協議轉換、智能儀器儀表等眾多工業領域。It is observed that the industries of the first group and the second group are the superior industries in shandong province. according to the industry groupings analyses, we can make a discovery of a distinguishing characteristic : in shandong province, the industries with the actual competitive power are mostly dispersed over the resource - intensive industries, such as the industries of energy source, foodstuff, textile and etc, they are all the resource - intensive industries, while the industries with the potential competitive advantages are primarily the capital fund and the technology intensive industries, including the industries of electron, pharmacy, mechanism, instrumetation and etc, they are all the capital fund and technology intensive industries
通過對山東省37個工業行業的量化計算，經分析可以將山東省工業行業分成三組：分別是具有現實競爭優勢的工業行業、具有潛在競爭優勢的工業行業和完全不具有競爭優勢的工業行業，根據產業分組分析，可以發現一個明顯特徵：山東省具有現實競爭優勢的產業主要分佈在資源密集型產業中，如能源、食品、紡織等都屬于資源密集型產業，而具有潛在競爭優勢的工業行業主要是資金技術密集型產業，包括電子、制藥、機械、儀器儀表等都屬于資金技術密集型產業。Facilities management ( fm ) is an important part of computerized government affairs, but there are many problems exits in present fm, such as the difficulty to maintain the integrity and greenness of data, the handicap exits in data exchanging and data sharing, the shortness to provide evidence for decision - making, and so on
城市設施管理是電子政務和數字城市的重要組成部分，但是現有管理系統存在很多問題，主要表現在數據的完整性和現勢性難以保證，數據的交換和共享困難，不能為領導決策提供支持等。With the electronic controller unit increasing quickly in auto, high - speed and effective communication is requested. adding its huge advantage, the controller area network will take the place of the rs232 and its use in auto become a certain direction
由於汽車內部電子智能部件的大量增加，對數據通信提出了迫切的要求和can局域網的優點， can網路取代傳統的串口通信已成為必然的發展趨勢。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。The vibrational excitation cross - sections of low - energy electron scattering from n2 molecule are studied using the improved body - frame vibrational close - coupling ( bfvcc ) method and quantum scattering potentials including static, exchange and polatization contributions based on ab initio calculations
摘要使用經孫衛國教授改進后的振動密耦合散射方法和基於量子力學從頭計算得到的靜電、交換與極化散射作用勢，研究了低能電子與n2分子的振動激發散射截面。Ab initio study on potential energy function and vertical ionization potential for puo molecule
分子勢能函數與垂直電離勢的量子化學計算Thus, it is believed that in subsequent high - temperature process, the base boron will outdiffuse very easily into emitter and collector, which will form a parasitic barrier for the electrons when moving from emitter into base and result in performance degradation of the device
這樣在後續的高溫工藝中就會引起基區的雜質外擴到集電區和發射區，產生電子勢壘，導致器件性能的嚴重退化。分享友人