gradient speed 中文意思是什麼

gradient speed 解釋
定斜法感光度
  • gradient : adj. 1. 傾斜的。2. 【動物；動物學】步行的，能步行的。n. 1. 〈英國〉（道路的）傾斜度，坡度，坡路。2. 【物理學】梯度，陡度，（溫度、氣壓等的）變化率，梯度變化曲線。
  • speed : n 1 快，迅速。2 速率，速度。3 （汽車的）變速器，排擋。4 （膠片，照相紙）感光速度。5 〈古語〉興隆...
  1. Method for determining the speed and average gradient of black - and - white aerial camera films

    黑白航空照相膠片感光度和平均斜率測定方法
  2. Photography sensitometry - black - and - white aerial camera films - determination of iso speed and average gradient

    航空攝影用黑白膠片iso感光度和平均梯度的測定方法
  3. Abstract : a cad tool based on a group of efficient algorithms to verify, design, and optimize power / ground networks for standard cell model is presented. nonlinear programming techniques, branch and bound algorithms and incomplete cholesky decomposition conjugate gradient method ( iccg ) are the three main parts of our work. users can choose nonlinear programming method or branch and bound algorithm to satisfy their different requirements of precision and speed. the experimental results prove that the algorithms can run very fast with lower wiring resources consumption. as a result, the cad tool based on these algorithms is able to cope with large - scale circuits

    文摘:介紹了一個基於標準單元布圖模式的電源線/地線網路的輔助設計集成工具.它應用了一系列高效的演算法，為用戶提供了電源線/地線網路的設計、優化和驗證的功能.非線性優化技術、分枝定界演算法和不完全喬萊斯基分解的預優共軛梯度法是該工作的三個主體部分.用戶可以選擇使用非線性規劃的方法或者幾種分枝定界方法來滿足他們對于精度和速度方面的不同需求.實驗結果表明，文中所提供的演算法可以在很快的運行速度下實現更低的布線資源佔用.因此，在這些有效演算法基礎上實現的輔助設計工具具有處理大規模電路的能力
  4. Using the system designed in this thesis work, flow field calibration of the wind tunnel is accomplished, which covers dynamic pressure drop coefficient, dynamic pressure time stability, axial static pressure gradient, boundary layer, and degree of turbulence, etc. boundary layer measuring principle and method are especially described in detail, the relationship between boundary layer thickness, wind speed setting, and the depth of the experimental section is summarized, and finally the calibration data for th e model center zone under specific wind speed are given

    然後利用本文設計的系統完成了落差系數、動壓時間穩定姓、軸向靜壓梯度、邊界層及湍流度等內容的流場校測。特別對邊界層測量的原理及方法做了較詳盡的敘述，總結出邊界層厚度與設定風速、實驗段深度的關系，然後給出模型中心區一定風速下校正數值。
  5. Photography - direct - exposure medical and dental radiographic film process combinations - determination of iso speed and average gradient

    攝影.醫療和牙科用直接曝光射線攝影膠片照相版圖片的iso感光速度和平均梯度的測定
  6. As a novel environment - protected vehicle, the middle and low speed maglev train has a large climbing gradient, small swerving radius, low noise, no pollution and can be compatible with any circumstances. it is the most competitive in the future city traffic

    作為一種新型環保交通工具，中低速磁浮列車爬坡度大、轉彎半徑小、低噪聲、無污染、對環境兼容能力強，在未來城市交通中具有較強的競爭力。
  7. A microstrip array is designed to meet the needs of the technical specifications. a hybrid method with the full wave, fft and biconjugate gradient ( bcg ) is used to calculate the current distributions on the microstrip. the simulated results show that the method can improve the analysis efficiency and speed up the calculation speed

    研製了符合技術指標的微帶天線陣列，設計中將傳統的全波分析方法與快速付立葉變換（ fft ）和雙共軛梯度（ bcg ）法結合起來，用於分析微帶天線的電流分佈，改進了計算方法，加快了計算速度。
  8. Photography - direct - exposing medical and dental radiographic film process systems - determination of iso speed and iso average gradient

    攝影技術.醫療用和牙科用直接爆光射線攝影膠片沖洗系統. iso感光速度和iso平均梯度的測定
  9. The cooling in gradient method was applied, the uneven cooling speed was avoided

    通過工藝改進，採用自上而下的梯度式降溫方式，避免了降溫速度不均勻的問題。
  10. 3 a novel recursive least - square ( rls ) blind space - time receiver algorithm based on the constrained condition, which can completely avoid the matrix inversion introduced into by constraints ( comparing with the normal rls ), is proposed for multi - path slow fading cdma channels. the computational complexity of this method is not only lower than that of the normal rls, but also lower than that of both lms and ls blind space - time receiver methods that are realized based on the rosen ' s gradient projection. and the speed of convergence of the presented rls blind space - time receiver algorithm is better than that of both lms and ls blind space - time receiver methods

    3 、針對多徑慢衰落通道下ds - cdma盲空時接收機中線性約束二次規劃問題提出一種新的遞歸最小二乘演算法，該演算法完全避免因約束而引進的矩陣求逆運算（相對于常規的遞歸最小二乘演算法） ，不但運算量比常規的要低，而且比基於rosen梯度投影實現的最小均方（ lms ）與最小二乘盲空時接收機演算法還低，且收斂速度比基於rosen梯度投影實現的最小均方（ lms ）與最小二乘盲空時多用戶檢測都好，將提出的新的遞歸最小二乘演算法與提出的數據選擇方案結合起來可以進一步降低其運算量，具有很大的實用價值，最後通過模擬實驗進一步分析了其性能。
  11. Specifically, we present a full velocity difference ( fvd ) car - following model, a cellular automata ( ca ) model that considers the velocity effect of the preceding car, another ca model that can describe the synchronized flow, and a speed gradient ( sg ) macroscopic model which can describe the anisotropic properties of traffic flow

    具體地說，我們提出了一種全速度差車輛跟馳模型，一種考慮前車速度效應的元胞自動機模型，另一種能較好模擬同步流的元胞自動機模型，以及一種能體現交通流各向異性特徵的速度梯度宏觀連續模型。
  12. The 3d turbulent flow fields around high - speed trains of four kinds of model uain have been calculated by 3d parallel compute program coded with the algorithms presented in this thesis. from the calculation results, the aerodynamic drag of different types of model trains are obtained, some characteristics of the flow field over the high - speed train are analyzed preliminarily such as pressure distribution and diversification, velocity distribution and diversification, and the affections of different train head shape to pressure. velocity, pressure gradient and the like

    用三維并行計算程序模擬了四種不同高速列車車型的外流場，獲得了不同車型的運行阻力；詳細分析了列車附近流場的壓力分佈及其變化情況，討論了列車頭型對列車通過時產生的壓力波動的影響；分析了四種車型外部流場的速度分佈規律及其變化情況，分析了列車頭部形狀對它們的影響。
  13. For simulating the radial static pressure gradient behind the true turbine guide cascade in low speed wind tunnel with annular cascade, the backboards were placed in the downstream field of the guide model cascade of the low - pressure stage of a turbine, and the effects of the types and positions of the backboards on the outlet flow field of the model cascade were experimentally researched

    為在環形葉柵低速風洞實驗中模擬實際渦輪級靜葉后徑向壓力梯度，在某型渦輪低壓級靜葉的下游流場設置了擋板，實驗研究了擋板形式及設置位置對靜葉出口流場的影響。
  14. Firstly the stochastic gradient algorithm based on minimum mutual information ( mmi ) is researched, and this algorithm is simple and stable, but its convergence speed is slow. secondly the natural gradient algorithm based on riemann space is researched. finally easi algorithm, iterative inversion algorithm and some

    首先研究了基於最小化互信息的隨機梯度演算法，該演算法簡單穩定但收斂較慢，然後研究了基於黎曼空間的自然梯度演算法，最後介紹了easi演算法、迭代求逆演算法以及其餘一些演算法。
  15. Photography - sensitometry of screen film systems for medical radiography - determination of sensitometric curve shape, speed and average gradient

    攝影.醫用放射照相用屏蔽膠片系統的感光測定.感光曲線形狀速度和平均梯度的測定
  16. Photography - sensitometry of screen film systems for medical radiography - determination of sensitometric curve shape, speed and average gradient for mammography

    攝影.醫用放射照相用屏蔽膠片系統的感光測定.感光曲線形狀速度和乳腺x射線照相術平均梯度的測定
  17. Sensitometry of screen - film systems for medical radiography - part 1 : method for determination of sensitometric curve shape, speed, and average gradient

    醫療x射線照相用軟片-箔片系統的感光測定法.第1部分
  18. Sensitometry of screen - film systems for medical radiography - part 3 : method for determination of sensitometric curve shape, speed and average gradient for mammography

    醫療x射線照相用軟片系列的感光測定.第3部分:乳腺x射
  19. The coupled turbulent flow field and temperature field are simulated by finite element method ; the influence of casting speed on the turbulent flow field and temperature field in the melting bath and the interaction between those two field are analyzed ; the variation tendency of the heat flux intensity between the melting bath and casting roll and law of variation with changes of casting speed in the process of solidification are given ; a comparison between the simulation results and experimental results demonstrates their good agreement ; and the mechanism of the heat flux variation is identified by analysis on the temporature gradient and development of solidification within the melting bath and its influence on the variation of the heat flux intensity

    採用有限元法模擬了雙輥鑄軋不銹鋼過程的流熱耦合問題;分析了鑄軋速度對熔池內流場、溫度場的影響以及流場與溫度場之間的相互影響;給出了凝固過程中熔池與鑄軋輥之間的熱流密度變化趨勢及隨鑄軋速度的變化規律，並把此模擬的結果與試驗的結果相比較，吻合較好;通過熔池內溫度場及溫度梯度分析了熔池內凝固的發展及其對熱流密度變化的影響。
  20. Based on the research work on matrix solution techniques, we propose a incomplete cholesky pre - conditioning based conjugate gradient solution technique. this technique can take advantage of the special properties of power grid and solve the circuits in a fast speed

    在深入研究地基礎上，本文提出了基於不完全cholesky分解的共軛梯度電路求解演算法能夠實現電源網格的快速求解。
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