grid characteristic 中文意思是什麼

grid characteristic 解釋
柵極特性
  • grid : n 1 格子，格柵。2 （蓄電池的）鉛板。3 【無線電】柵級。4 鐵道網；【電學】電力網；〈英國〉（全國）...
  • characteristic : adj 有特性的；表示…特性的，…特有的。 Japan s characteristic art 日本特有的藝術。n 特性，特徵，性...
  1. This article introduces briefly the process of design and characteristic of structure of db930 tube and discusses the main problems of technology and technique which was met during the manufacture and the measures having been adopted are emphatically. it discusses the solve measures in following six aspects : the filament current is too large, carbon deposits during the carbonizing of cathode, the capacitance between the first grid and the second grid is too large, transpiring happens inside the tube, the insulation resistance between the electrodes is too lower when the filament is on and the ability of bearing high voltage is too lower

    本文簡略地介紹了db930的設計過程及其結構特點，重點論述了在試制過程中遇到的主要工藝技術問題及解決問題的措施，圍繞解決燈絲電流大、陰極碳化時積碳、一柵和二柵之間的電容大、管內蒸散、熱態時極間絕緣低、耐高壓的能力差等六個方面的問題進行了論述。
  2. Measurements of the electrical properties of transmitting tubes - measuring methods of static characteristic curve for common grid circuit

    發射管電性能測試方法共柵電路靜態特性曲線的測試方法
  3. After deeply investigate and analysis, we found the drawback of clique lies in its inconsideration of the characteristic of the data being processed. it grid the data into a predefined grid and this adds up to the complexity of the computation. then it has to degrade the accuracy of the result to degrade the complexity of computation,

    通過深入的研究和分析，發現由於clique演算法沒有考慮到如何利用當前挖掘數據的特性，而是進行一種硬性的網格劃分，因此增加了計算復雜程度，而為了降低計算的復雜程度就只能降低聚類結果的精確性。
  4. In the first part of the paper, the explicit form of difference equation and periodic boundary condition is derived in cartesian coordinate system. secondly, the dispersive characteristic is analyzed in cylinder coordinate system for many high power microwave devices use cylinder sws. and then the method is extended to calculate the band structure of 2 - d photonic crystal, a modified yee ’ s grid is introduced to calculate the dispersive characteristic in the case of triangular lattice, so that both square lattice and triangular lattice cases can be solved in cartesian coordinate system

    周期電磁結構的一個重要應用就是用作高功率微波器件中的慢波系統，考慮到目前大部分高功率微波器件的慢波系統多採用圓柱周期結構，在論文第四章中，在圓柱坐標系下，給出了差分方程和周期性邊界條件的具體形式，同時編寫程序，分析了milosws ，盤荷慢波結構的色散特性。
  5. Firstly, this thesis discusses the requirements of chinese word segmentation. based on that, seven algorithms are proposed with grid characteristic

    本文首先研究了漢語分詞應用需求的多樣性，結合網格的特點設計了七個服務演算法。
  6. In the first chapter of this article, we can read the introduce of definition and catalog of the grid computing, the characteristic and function of the grid system, the model of the classical five layers of hourglass grid architecture and ogsa, which is new and combined by the technology of web services and grid, and several famous grid systems, for example, globus

    本文首先在第一章介紹了網格計算的定義、分類，網格系統的特點、功能，典型的五層沙漏網格體系結構模型，和結合了webservices技術和網格技術的新的開放網格服務體系結構ogsa 。並介紹了一些目前較有名的網格系統，如globus 。
  7. The algorithm considers the impact to adjoining edge during disposing the border of blocks, and still maintains the grid regular characteristic

    該演算法考慮了邊界處理時對鄰邊的影響，處理結果不影響網格的規則特性。
  8. In order to resolve the question, in the thesis a simulation arithmetic of hydro - electrical system is put up. the equations of hydro - electrical system are divided to two parts, one of which consists of the differential equations of conduit system, hydro turbine and generator ' s rotator and is solved by characteristic equation arithmetic, the other of which consists of the differential equations of generator, magnetic system and grid and is solved by longge - kuta arithmetic or covert integrated arithmetic. through the alternative solving of the two parts, the simulation results of the large - disturbance transient could be abstained eventually

    為解決這一問題，本文提出了一種將水力系統和電力系統方程交替求解的水電系統聯合模擬演算法，即將包括輸水系統、水輪機以及機組轉子等部分的水力系統差分方程作為一部分，將包括同步發電機、勵磁系統以及電網等部分的電力系統微分方程或差分方程作為另一鄭州大學工學碩士論文部分，對前一部分採用特徵線法求解，對后一部分根據模型形式採用龍格一庫塔法或隱式積分法等演算法求解，這兩部分的求解過程交替進行，最終即可得到水電系統大擾動過程的模擬結果。
  9. All the improvements included the modifications on the sound velocity, characteristic mach number and the mach number at the grid interface. several 2d flow fields which had shock, shear flow, rarefaction wave, or turbulent boundary layer and the combination of them were computed

    該格式改進了聲速、特徵馬赫數的處理方式，對網格界面馬赫數進行了修正，並求解了含有脫體激波、斜激波、剪切流、膨脹扇、及湍流附面層等流動特徵的復雜流動。
  10. With the analysis of the characteristic of high density of nodes deployed in wireless sensor network, a new routing algorithm was proposed based on combination of grid structure and trajectory - based forwarding algorithm

    摘要針對傳感器網路節點稠密布置的特點，提出一種將網格結構和基於軌跡的轉發方式相結合的路由演算法。
  11. Beginning with the problem of interlaced region between farming and herding, the boundary line of the interlaced region is calculated based on grid with 10km grid ; then the relation among land use of the region, soil erosion and erosion region is analyzed ; based on factor classification, no useful factors were neglected and stepwise regression method was used to analysis the drive of land use change ; fractal method was applied to analysis the degradation of land - use and relation among land use, soil erosion and wind - water erosion zone ; environmental variances are introduced to establish characteristic index of land use change and analysis the effect of land use change on soil erosion

    從農牧交錯帶的實質問題入手，基於10公里網格，計算農牧交錯帶的界限；在此基礎上分析農牧交錯帶的土地利用、土壤侵蝕及與風水侵蝕帶的關系；在因子分層的基礎上，剔除不需要因素，採用逐步回歸的方法，進行土地利用變化驅動力分析；運用分形方法分析土地利用的退化，並分析土地利用與土壤侵蝕的關系，引入環境變量，建立土地利用變化特徵指數，分析土地利用變化對土壤侵蝕的影響。
  12. First, variable speed constant frequency wind energy convertion theory is described in this paper, then presents a review on the development of wind turbines control and the main types of generator and static converters used to interface variable speed wind turbines to the electric grid. then discuss main circuit constructure and advantage of direct drive wind energy conversion system and introduce pitch - control method for wind power traction and electric power stability. simply aerodynamic characteristic of the turbine is analysised and permanent magnet synchnonous generator math model is established. to convert the variable frequency electricity into utility grid, back to back four - quadrant pwm - vsi is used and three typies of control strategy is presented to capture the maximum wind energy and transmit energy. then simulation is implemented to test the control strategy. in the following chapter a simple ac - dc - ac converter with a dc - dc boosting chopper is proposed to transmit the wind energy into electricity energy and two control strategy is presented

    建立了永磁電機和變流器的數學模型，針對雙pwm變頻器的特點提出了三種控制策略對變流器進行控制，通過變流器交-直-交的變換，將發電機發出的變頻變幅值交流電轉化為可用的恆定頻率的交流電，通過pwm調治能使其輸出功率因數為一，並且該控制系統功率因數為可調，能在特殊情況下同電網交換一定的無功功率，並通過對變流器的控制實現了最大風能俘獲的功能。最後採用matlab / simulink進行了模擬，取得了良好的模擬效果。在風力發電系統中，採用先進的最大功率俘獲演算法，能有效的從風中獲得最大的能量。
  13. However collapse of grid and power failure in large area happened in the world sometimes. and the failures prove that a much too huge and complex grid will show some unexpected vulnerability characteristic. any fault will incur some catastrophic error

    但是電網瓦解和大面積停電事故目前在世界上還時有發生，同時這些停電事故也再次提醒人們一個事實：過于龐大和復雜的網路，難免會呈現出某些難以預料的脆弱特性。
  14. Watershed land use condition was updated swiftly, watershed land use status map was made, through vector - grid overlap of land use status map and doq, distillation characteristic data and updating data. 5

    通過土地利用現狀圖（ dtl ）與doq矢柵疊加，提取特徵數據並更新數據的方法，對流域土地利用進行快速更新，完成流域土地利用現狀圖的製作。
  15. But how to measure grounding resistance of large grounding grid simply and exactly is a difficult problem to electric power staff all the time. this paper has classified measuring methods of grounding resistance at home and abroad, and has analyzed interference factors during measurement, and has summarized principle and characteristic and measuring current and so on of various measuring methods

    本文對國內外現有或正在研究的測量方法進行了分類，分析了測量地網接地電阻干擾的主要來源，並首次全面地對各種方法的原理、特點、測試電流、消除干擾能力和測試結果進行了比較分析、總結歸納，方便后來者研究應用。
  16. The characteristic of the technology of production for each hydropower station in hubei was analyzed and the necessity for constructing the pumped storage station in hubei power grid with large proportion of hydropower was pointed out

    摘要進行了湖北省境內各水電廠的生產技術特點分析，指出了水電比重大的湖北電網興建抽水蓄能電站的必要性。
  17. Secondly, the generation of electricity and the sale of electricity increase slowly, the proportion and the cost of purchasing electricity go up. thirdly, the electricity expense due becomes more and more so that the operation of the electric grid becomes more and more difficult, and the knowledge on characteristic of demand is not enough to exploit the potential of power consuming market. finally, the concept of marketing is not based on the market, and the low level of service results in the simpleness of the marketing strategy, and the marketing system cannot meet the demand of the market changing

    市場化改革給供電企業提出許多新問題，尤其是市場營銷面臨嚴峻的挑戰：電力銷售由供不應求轉變為需求不足；發電量和售電量呈低速增長，購電比重上升，購電成本增加；欠電費數額增長，電網運營困難；用電市場潛力深挖不夠，需求特點了解不足；營銷思想沒有真正以市場為導向、服務水平不高、營銷策略較單一、市場營銷體系不能適應市場變化的需要等。
  18. A two - grid scheme of characteristic finite - element solution for 2d nonlinear convection - dominated diffusion problem

    非線性對流擴散方程特徵有限元的兩重網格演算法
  19. In chapter 4, for 2d nonlinear convection - dominated diffusion equation, a two - grid scheme of characteristic finite - element solution is constructed. numerical examples are presented and computed with matlab software. the numerical results show that these algorithms are effective and feasible

    最後用matlab對給出的數值例子進行編程計算，數值試驗結果表明該演算法是有效可行的，並且能夠極大提高計算的效率。
  20. In this paper a classifying - based grid scheduling model ( gsm - c ) is presented. in this model the characteristic of resource capacity is denoted by the class id which is defined periodically by the classifying strategy with regard to the dynamic features of the resource

    本文提出了一種基於分類的調度模型，用分類號來表徵資源的計算力特徵;同時，採用周期性的動態分類策略，以應對資源信息的動態變化問題。
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