電子發射系數 的英文怎麼說

中文拼音 [diànzifāshèxìshǔ]
電子發射系數 英文
electron emissivity
  • 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...
  • 子 : 子Ⅰ名詞1 （兒子） son 2 （人的通稱） person 3 （古代特指有學問的男人） ancient title of respect f...
  • 發 : 名詞（頭發） hair
  • 射 : Ⅰ動詞1 （用推力或彈力送出） shoot; fire 2 （液體受到壓力迅速擠出） discharge in a jet 3 （放出） ...
  • 系 : 系動詞（打結; 扣） tie; fasten; do up; button up
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 電子 : [物理學] [電學] electron
  • 系數 : [數學] coefficient; ratio; modulus; quotient; factor
  1. This thesis firstly introduces new demands of aerial product logistics support under high - tech war and some defects of traditional logistics support, and puts forward a kind of system model of aerial product logistics support following data - sharing of cals, and emphasizes detm. secondly it sets forth application of step and xml in the ietm, researchs conversion of xml schema and relation schema, and simply researchs mapping of xml and express. afterword, a based - xml framework of info - transfer between different platform are presented, according to this framework, the author establish a archetypal system of helicopter information query system based xml and dbms

    本文首先介紹了現代高科技戰爭條件下對航空產品維修保障的新要求，概述了傳統的後勤保障技術的不足，遵循cals的數據共享的理念，提出了航空產品維修保障系統模型，重點研究了互動式電子技術手冊；接著分析了step標準和xml技術在製作互動式電子技術手冊中的應用，重點研究了肌模式和關系模式之間的相互轉換，初步研究了xml和express語言之間的映射關系；然後，提出了基於xml的一種解決航空產品信息跨平臺傳遞的解決方案，給出了該方案的具體實現流程和詳細的通訊協議，並開發了基於xul和數據庫的某型號直升飛機的信息查詢原型系統。
  2. By using the multi - configuration dirac - fock ( mcdf ) method, the effects of relaxation and correlation on the transition energies and probabilities of electric - dipole allowed ( el ) resonance and intercombination transitions for 2p53s3 - 2p6 in neutral neon have been systematically studied firstly. and the results of the transition energies and probabilities ( lifetimes ) in length and velocity gauge have been presented. during the calculation, in order to consider the rearrangement effects of the bound - state density and some important correlations, the asfs of transition initial - and final - states were divided according to their angular - momentum and parity and calculated, and different number of csfs were included in the expansion of asfs

    本文利用多組態dirac - fork （ mcdf ）理論方法，通過對輻射躍遷初、末態電子波函數的獨立計算以及在原子態波函數的展開中考慮不同數量的組態波函數，系統地研究了弛豫和相關效應對中性ne原子2p ~ 53s ~ （ 1 . 3 ） p _ 1 ~ o - 2p ~ 6 ~ 1s _ 0電偶極共振和復合躍遷的能量以及躍遷幾率的影響，給出了長度和速度兩種不同規范下激發態的能量和輻射壽命；以中性ne原子的研究為基礎，進一步研究了類ne等電子系列離子（ z = 11 - 18 ）較低的激發組態2p ~ 53s和基組態2p ~ 6的能級結構以及各能級間的輻射躍遷特性。
  3. At first, environment detection data is collected, modulated and emitted in the the system of fy - 2 and detectors. then data signal is magnified, demodulated and sent in the earth - based system of data receiving and demodulating. at last, data is received, processed, stored, displayed and judged to make alarm automatically by telephone for solar proton - events and x - ray flare in the system of data processing and alerting

    首先在fy - 2衛星及探測器系統中，環境探測數據被收集、調制並發射，接著由地基數據接收及解調系統將數據信號放大、解調還原並發送，最後由數據處理及警報系統將數據接收處理、保存顯示並對太陽質子事件、 x耀斑進行自動電話報警。
  4. A new model for the growth stage of surface flashover has been developed according to the experimental results, which is based on the solid band theory. it is suggested that the electron multiplication could be attributed to two processes : one is the secondary electron emission avalanche caused by collisional ionization, the other is the micro - discharge caused by the trap centers of insulator. the trap cente

    電子倍增的過程與材料的表面態直接相關，材料微觀結構的變化和材料的表面處理都能夠導致材料表面態的變化，引起材料的表面二次電子發射系數以及材料中陷階密度和分佈的改變，從而影響了電子倍增的過程，並進一步改變或影響了沿面閃絡的發展過程。
  5. After target is detected the on - board avionics suite in combination with the automatic control system of the helicopter solve the task of bringing the helicopter to the designated point and automatic firing of the weapons selected by the pilot

    當捕獲目標后，機上的自動控制系統與電子系統將解算任務數據，引導直升機飛向敵潛艇水域，並在飛行員指令準許下自動發射武器進行攻擊。
  6. Based on the comparison and analysis of the secondary electron emission coefficient of two kinds of emitter gaas in theory, it is concluded that when primary electron energy is lower the deviation of secondary electron emission coefficient of two kinds of emitter gaas will become smaller, while when primary electron energy is higher the deviation will increase

    通過對兩種負電子親和勢二次電子發射材料的二次電子發射系數的理論值進行比較和分析，得出：當原電子入射能量較低時，兩種材料的二次電子發射系數差值較小；當原電子入射能量較高時，兩種材料的二次電子發射系數差值較大，而且隨著原電子入射能量的升高，兩種材料的二次電子發射系數差值也在增大。
  7. The basic principle, main properties, typical parameters, technical characteristics and general situation of klystron are introduced. the electron beam prebunching in the modulated cavity and shift tube of relativistic klystron amplifer ( rka ) is studied analytically, a self - consistent equation of radiation generated by the prebunched electron beam in the radiation cavity is derived using the field method of particle ? wave interaction instead of the electrical circuit method, and in terms of it, the gain in the linear regime calculated, a field analysis method is proposed. the theory analysis shows that the characteristic parameters, such as resonance frequency, real part of gap - impedance, external quality fadtor in all kinds of klystron output circuits including single - beam, multi - beam, single - gap, multi - gap, single - beammulti - gap, multi - beam multi - gap klystron output circuit, can be calculated by the field analysis method

    本文系統的介紹了速調管的工作原理、主要特點、發展概況、主要性能指標和技術特點，解析的研究了電子束在相對論速調管放大器的調制腔和漂移管中的預群聚;用粒子波互作用的場方法導出了在輻射腔中預群聚電子束產生輻射的自洽方程，同時對線性區的增益進行了計算。理論分析表明，場分析法可用於計算單注單間隙、多注多間隙、單注多間隙和多注多間隙速調管輸出迴路的諧振頻率、間隙阻抗實部和外觀品質因數等特性參數。
  8. Silicon lasers could lead to affordable light - based systems that harness photons instead of electrons to shuttle huge amounts of data swiftly ? at multigigabit - per - second rates

    有了矽雷射之後，科學家就可製作出全光學系統，以光子取代電子，快速收發大量資料，最高速率可達每秒數十億位元。
  9. The products of hg genuine cover semiconductor laser and detector chip, active device, transceiver that are widely applied in communication and optical sensors

    公司產品包括半導體鐳射器和探測器管芯、光電子器件、光收發模組三大系列，主要應用於數字、模擬通信以及光傳感等領域。
  10. The control system includes two modules, one named the input module which acquires data digitally, and the other, named the output module, controls the emission of the laser, the gating function of the single photon counting module ( spcm ) and the synchronization of the input and output modules. each of them uses a complex programmable logic device ( cpld ) as the core component, and is devided into three parts : the hardware circuit, the programming logic circuit and the software

    該控制系統主要包括控制單光子發射、單光子探測器、數據採集接收系統的輸出系統和數據採集系統兩個模塊，它們都採用復雜可編程邏輯器件cpld作為核心功能晶元，由硬體電路設計、晶元編程和高級軟體編程三部分組成。
  11. The effective method of nucleation and growth of nanoparticles as applied to synthesize w - and mo - containing polyoxometalates nanoparticles in precursor films by making use of their acidity or oxidative property. the controllable synthesis of nanoparticles can be achieved by increasing synthetic cycle of polyoxometalates. the composition, structure, and properties of the as prepared composite films have been characterized in detail by uv - vis, ftir, x - ray photoelectron spectra, scanning electron microscopy, atomic force microscopy, transmission electron microscopy and cycle voltammograms

    利用有效的在前體膜中成核、生長納米粒子的方法，使用keggin型鎢系、鉬系多酸，有目的地利用其酸性，強氧化性，在膜中發生反應，從合成出基於多酸的納米粒子，通過增加多酸的反應循環數，我們可以實現了納米粒子的可控合成，採用uv - vis光譜、 ftir光譜、 x -射線光電子能譜、掃描電子顯微鏡、原子力顯微鏡、透射電子顯微鏡、循環伏安對所制備的納米復合膜進行了組成、結構和性質表徵。
  12. The models of the laser emitting subsystem, the pin photoelectric receiving subsystem and the apd echo receiving subsystem of the laser system for identifying & communicating presented

    本文對激光識別與通信系統的激光發射子系統、 pin光電接收子系統和apd回波接收子系統建立了數學模型。
  13. In large rotating machinery using filmatic bearing ( turbogenerator, air compressor, etc. ) there is a potential trouble from impefect installation or running conditions, a metals " contact between rotors and shells. the trouble is usully called rubbing. the advantage of ae technologe in the rubbing diagnosis and early detection is showed. instead of classical ae characteristic parameters ( counts, amplitude, energy, duration and the other ones ) a new feature extraction by frequency analysis of ae envelop signals is discussed. both research of ae process and field experements indicate that periodic components in the envelop spectrum related to rotational speed increase evidently at the beginning of rubbing production, hence are highly sensitive to the rubbing fault diagnosis. according to the new design an acoustic emission equipment for the rubbing diagnosis named buaa ae testing system is developed and described

    汽輪發電機、空氣壓縮機等採用油膜支撐的大型轉動機械，由於安裝或運行中的原因，在轉子旋轉過程中，可能和器壁發生輕微的摩擦和碰擊，簡稱碰摩.聲發射技術在碰摩發生特別是故障早期診斷上有優越性.本系統的特點是沒有沿用傳統的計數、幅度、能量和持續時間等聲發射特性參數，而是在聲發射包絡信號的頻率分析中進行特徵提取.聲發射發生的過程分析和現場試驗都表明這種方法對碰摩檢測很敏感，在碰摩發生的起始階段，包絡譜中與轉速同步的周期性分量顯著增加.根據這種新的設計思想自行研製了buaa碰摩聲發射檢測儀並對此作了介紹
  14. In this dissertation, first, the basic conceptions of ew, radar ew and combat effectiveness are made clear about internal characteristics, consist and tasks. then, the evaluation factors architecture of radar ew system combat effectiveness is set up, which is the base of quantificational evaluation. second, mathematics modeling of radar ew reconnaissance, radar jamming and anti radiation attack are constructed

    本論文的研究首先從電子戰、雷達對抗、武器裝備作戰效能的基本概念出發，理清其內涵、特點、組成、任務，從而建立以能力為主線的雷達對抗系統作戰效能評估指標體系，為定量評估系統作戰效能奠定基礎;然後分雷達偵察、雷達干擾、反輻射攻擊分別對雷達對抗系統武器裝備的電子偵察能力、電子干擾能力、電子進攻能力進行數學建模，進而建立系統綜合對抗能力數學模型，為系統模擬建立設計基礎。
  15. The research and development of this task deal with the integrated technologies, such as radio frequency identification, application - embedded, wireless communication and management of data base, etc. this thesis begins with introducing the structure of rteps, brings forth the composing of the hardware structure ( patrol transmitter ) in this system, and designs the radio frequency signal - processing module and data signal - processing module respectively

    本課題的研究和開發涉及了無線射頻識別、嵌入式、無線通訊、數據庫管理等綜合技術。論文先從實時電子巡更系統的體系結構入手，給出了該系統中硬體系統（巡更話筒）構成，分別對射頻信號處理模塊和數據信號處理模塊進行設計。
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