propagation step 中文意思是什麼

propagation step 解釋
增殖過程
  • propagation : 持續培養
  • step : vi （ pp ）1 走；跨步。2 踩，踏上 （on）。3 跳舞，輕快地走，合著步調走。4 跨入，踏進。5 走上。vt ...
  1. And this result is extended to the eigenfunction of maxwell ' s equations. then the mode series of step index planar dielectric waveguide and circular optical fiber are studied, including propagation modes and radiation modes. as application, there are three examples : the emergent wave from planar waveguide to free space, the transverse and longitudinal coupling of waveguide and the measurement of scalar gratings

    由於從一個空間到另外一個空間的光束傳播伴隨著界面上各個模式能量之間的耦合，作為應用，本文介紹了完備性在三個情況下的應用：平面波導出射光束的衍射性質、波導的橫向和縱向耦合以及標量光柵的測試。
  2. Because of the digitally rebalanced circuit, the sensor is capable of achieving better static and dynamic characteristic, higher sensitivity and stability. in this paper, the propagation path of light in the step index fiber and graded index fiber is introduced firstly. then the paper sets up the coupled power model and develops the coupling function

    在文中，首先介紹了光線在階躍型光纖和梯度折射型光纖中的傳播路徑，以及在一端鍍有反射膜的1 4波節長度的grin透鏡中的成像規律，並推導了光功率耦合函數。
  3. In this article, we applied our improved circular back - propagation ( icbp ) network to single step and multi - steps time series prediction respectively

    在本文中將我們改進的圓形反向傳播網路模型（ improvedcircularbackpropagation - - icbp ）應用於時間序列預測，進行了單步和多步時間序列預測研究。
  4. As the first step, a variational function is derived from 3 - d time harmonic field maxwell equations and for x - cut y propagation lithium niobate waveguide, the according variational function can also be gotten by a similar process

    本文首先推導了對于時諧場普遍問題的變分方程，進而對x切y傳的鈮酸鋰波導進行研究。
  5. But the original blast algorithm has a very high computational cost because of the nulling and cancellation step. on the other hand, the algorithm also needs an optimal detection ordering to restrain the effect of error propagation and improve the detection reliability

    常規blast演算法由於需要進行大量的線性迫零（矩陣求逆）和串列符號刪除等運算，計算復雜度非常高，另一方面，演算法還需要尋找最優的信號檢測順序來消除誤差傳遞的影響。
  6. It is the reverse of the propagation step in addition polymerization.

    這一過程是加聚反應歷程中鏈增長步序的逆過程。
  7. A pulse hard source has been adjusted to allow the reflection wave pass by the source without retroreflection. and the calculation area is changeable at the different time step, so only those area with wave propagation have been calculated. as the results, the total calculation time can be reduced

    還有計算區域隨時間改變的方法，利用fdtd計算空間點的鄰近性，在不同的時間步上計算不同大小的區域，使得只有波傳播到的區域被計算，這樣可以縮短計算時間。
  8. Abstract : the propagation of waves passing over the abrupt changing topograghy can be simplified as a wave passing over a step. this flow process can be reasonably simulated by a 2 - d numerical wave flume developed in this paper, especially for the nonlinear transformation of the wave on the step. numerical results have been verified by experimental data

    文摘:波浪在水深劇變地形上的傳播，可以簡化為波浪在臺階地形上的傳播.利用二維數值波浪水槽可以很好地模擬這一過程，特別是對波浪在臺階上的非線性變形.數值計算結果與實驗測量進行了比較，結果吻合良好
  9. Abstract : the equivalent step planar wave - guide method is proposed to studythe propagation properties and design of diffused planar wave - guide. the model was established, and a set of simulation has been done, and a series of relationship curves among the parameters of wave - guide propagation, structure and technics are obtained. these curves are helpful to diffused planar wave - guide design and technical parameter selection

    文摘:本文引入一種研究擴散光波導傳播特性及設計計算的新方法? ?等效階躍平板波導方法.建立了擴散平板光波導的等效階躍平板波導模型，進行了一系列的模擬計算，得出了一系列波導傳播參量、結構參量與工藝參量之間的關系曲線.這些曲線對于擴散平板光波導的設計計算、工藝參量選擇等具有重要指導意義
  10. In the numerical solution algorithm, the method of characteristics, analytic method and galerkin finite element method ( galerkin - fem ) can be chosen to solve the advective equation, diffusion equations, reaction ( source / sink ) equations, propagation equations and pressure poisson equation, respectively. the developed new algorithm has been verified using analytical solution of circular conduit flow in a reynolds number range of 100 < re < 1 000 and experimental data of the laminar flow over a backward - step facing step. the flow properties are well characterized by this three - dimensional numerical model

    本論文在評述三維粘性流動數學模型已有研究成果的基礎上，著重在數值計算方法的選擇和定解條件的給定對數學模型計算結果的影響進行了研究，並首次提出了求解三維純對流方程的高精度的擬協調單元法，建立了三維低雷諾數re流動的數學模型，並在圓管流動、臺階突擴矩形管道流動中得到驗證和應用。
  11. In the following parts of this paper, we established the principia and core of the vcp, and expatiated its basic assignment, manner of running, and requirement. furthermore, we pointed out the practical measures for the execution of the vcp in the aspects of organization, system, technique, propagation and information source, and the key step that we should pay more attention to. at the end of this paper, a case was offered to prove the feasibility and effectiveness of the vcp

    繼之，本文在確立虛擬社區警務的基本原則與核心思想的前提下，闡述了虛擬社區警務的基本任務、運作方式與工作內容，從組織、制度、技術、宣傳、服務、信息資源等六個層面確定落實虛擬社區警務的具體措施，並強調了應把握的主要環節，即確立警務理念、塑造新型警民關系、有效配置警力、培育和發展虛擬社區、實現虛擬社區組織化、建立警務機制、加強社會協作等。
  12. A theoretical investigation by split - step fourier method is presented on the propagation of a femtosecond gauss pulse in photonic crystal fibers

    摘要運用分步傅里葉方法數值模擬了飛秒高斯脈沖在光子晶體光纖中的傳輸，計算分析了初始啁啾對脈沖壓縮效應的影響。
  13. In chapter 3, how the split - step fourier method is applied to simulate the co - and counter - propagation of two beams is presented

    第三章，介紹了分步傅立葉方法，特別是如何應用迭代法來解雙光束對向耦合傳輸問題。
  14. The bic method generalized from ar model was adopted to determine the number of input neurons in grnn prediction model. the grnn was applied to single - step and multi - step ahead prediction of the vibration time series of a rotating machine, and its performance was compared with that of 3 - layers perceptrons network with error back propagation training algorithm ( bpnn ). it is indicated that the grnn is more appropriate for prediction of time series than the bpnn, and the performance of grnn is qualified even with sparse sample data

    研究了基於廣義回歸神經網路（ grnn ）的大型旋轉機械振動狀態預測，提出了應用bic準則確定grnn預測模型輸入神經元數目的方法，將grnn用於大型機組振動峰?峰值時間序列的預測，與採用誤差反向傳播學習演算法的三層前饋感知器網路（ bpnn ）的預測結果對比表明， grnn的預測性能優于bpnn ，而且，即使樣本數據稀少，也能獲得滿意的預測結果。
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