預激波 的英文怎麼說

中文拼音 [yùjībō]
預激波 英文
preexcitation wave
  • 預 : Ⅰ副詞（預先; 事先） in advance; beforehand Ⅱ動詞（參與） take part in
  • 激 : Ⅰ動詞1 （水因受到阻礙或震蕩而向上涌） swash; surge; dash 2 （冷水突然刺激身體使得病） fall ill fr...
  • 波 : Ⅰ名詞1 （波浪） wave 2 [物理學] （振動傳播的過程） wave 3 （意外變化） an unexpected turn of even...
  1. With account for the effect of temperature and shock - boundary layer interaction, the forebody / inlet with plane lip and wedge lip are designed by using the design methods of constant shock wave intensity and constant shock wave angle. in the design, the incidence angle of the first ramp, height of isolator, length of forebody and total turning angle of the designed forebody / inlet models are given

    另外，根據優選結果，給定前體長度、前體預壓縮楔角、總壓縮轉角及隔離段高度，分別用等激波強度和等激波角度的方法設計了唇口平直和唇口帶楔角的前體進氣道。
  2. In order to verify the prediction efficiency, 27 interplanetary shock events from january 1979 to june 1982 and 68 interplanetary shock events from february 1997 to january 2000 are used for testing. comparing the results of our disturbance model to those obtained by stoa and ispm, we find that our disturbance model is as good as the other two models, and in some cases even better

    為印證擾動傳播模型的適用性，利用79年到82年間的27個激波事件，以及97年2月到2000年1月間的68個激波事件，對激波到達地球軌道附近的傳播時間進行了預測，並將結果與目前流行的行星際激波事件到達地球軌道時間的stoa和ispm預報模型所得結果進行了比較。
  3. Chapter 2 : characteristics of propagation of ultra - intense laser beam in a partially stripped preformed plasma channel is discussed, in which the relativistic self - focusing effects, together with the perturbed plasma density, is discussed

    第二章：本章闡述了超強激光光束在拋物型部分電離的預等離子體（聚焦和散焦）隧道中的傳輸特性。研究了相對論自聚焦效應和等離子體波引起的密度擾動對傳輸的影響。
  4. In order to utilize the frquency resource adequately and increase the capacity of mobile communication system, the wireless electric wave propagation of existing mobile system always adopts the microcell structure. forecasting the path loss characteristic of electric wave accurately can provide the necessary condition for the layout and design of wireless network, at the same time it is a precondition for the research on the microcell mobile system. the methods of forecasting of wireless electric wave propagation can divide into two parts : one is pluse and respond, that is establish the empirical model based on experimental and statistical data ; the other is ray tracing method, that is establish the deterministic model based on theoretical analyse. the paper discuss the characteristic of wireless signal electric wave transmition in symmetrical atmosphere of earth, and introduce the common path loss transmition model in land mobile communication system, also point out the localization of these models based on experiential methods

    而精確預測無線電波傳播路徑損耗特性，則為合理的微蜂窩無線網路規劃、設計提供了必要條件，同時也是研究微蜂窩移動通信系統性能的前提。無線電波傳播預測的方法分為兩類：一是用沖激響應法，即根據實驗、統計所得數據建立經驗性傳播預測模型；另一種是用射線跟蹤方法，即依據理論分析來建立確定性的傳播預測模型。本文首先討論了在地球表面均勻大氣中的無線電波傳播的基本特性，介紹了陸地移動通信系統中常用的幾種電波傳播路徑損耗經驗性預測模型，並指出了這些經驗性傳播模型對于微蜂窩小區無線電波傳播特性研究的局限性。
  5. The innovation points in this thesis are : ( 1 ) before the collection of transient r - surface wave data, selected the parameter of impulse, receive, and observation in the experiment. ( 2 ) estimated the bearing capacity of foundation with multi - parameter

    本論文的創新點： （ 1 ）在瞬態瑞雷面波資料採集前，通過試驗重點討論和選擇了瞬態瑞雷面波採集的激發、接收方式和觀測因素等參數； （ 2 ）多參數神經網路綜合預估地基的承載力。
  6. Schneider expects the holders of the world ' s strongest beer, the boston beer company, to put up a fight. “ i ' m pretty sure the americans have something up their sleeve

    施奈德預期擁有全球最烈啤酒的業者波士頓啤酒公司會讓競爭更激烈。我非常確定這些美國人暗藏一手。
  7. These results show the expected increases in solar wind plasma density downstream of the bow - shock boundary, as well as significant solar wind plasma densities within mercury ' s magnetosphere close to the planet

    這些調查結果表明，預計增幅在太陽風等離子體密度下游弓激波邊界，以及大量的太陽風等離子體密度與水星的磁層接近地球。
  8. With a purpose to provide basic data or figures for the feasible research of a project construction and its planning, taking the practical project of preselecting a factory location for an instance, using the principle and method of shallow seismic reflection, based on the area conditions, differences in physical features and disturbance, with experiments on typical sections of the construction area, one can draw reasonable measuring lines, choose right modes of producing and receiving waves, conduct primary and precise computer data processing, acquire a distinct reflected wave section from a shallow depth and explore the stratum structure in the preselected location and the distribution of longitudinal waves

    摘要結合某重大工程預選廠址項目的工程實例，利用淺層地震反射波法的原理和方法，根據現場的場地條件、物性差異和干擾情況等，結合典型地段的試驗，合理布置測線，選擇恰當的激發和接收方式，進行初步和精細的計算機資料處理，可以得到清晰的淺層反射剖面，準確地查明了預選廠址的地層結構和縱波速度分佈，為工程建設的可行性研究和規劃提供了基礎資料。
  9. The weak signal in laser clutter background can be detected by means of the prediction error

    利用預測誤差檢測到激光雜波中的有用弱信號。
  10. Using this expression, the interrelation of the carrier density in each segment and the emission wavelength can be predicted while the laser is lasing

    該表達式可以用來預測激光器激射工作時，兩段載流子濃度和激射波長之間的相互關系。
  11. This dissertation has studied the structural model and model predictive control ( mpc ) algorithm that was first implemented for the structural vibration control of the tall building under earthquake excitation. based on analyzing structural motion equation and the state space form equation of the earthquake - excited structural model of the tall building, predictive model and control objective functions are defined and the mpc system of the tall building is set up

    本文主要研究高層建築結構振動控制的結構模型和預測控制演算法，首次將預測控制應用到高層建築結構地震反應控制中，在分析受地震波激勵的高層建築結構模型的運動方程及其狀態空間形式方程的基礎上，確定預測模型和控制目標函數，建立高層建築結構預測控制系統，從理論上對預測控制在高層建築結構振動控制中的應用進行研究。
  12. Theoretical predictions of springing and their comparison with full scale measurements

    波激振動的理論預報及與實船試驗結果的比較
  13. The prediction of disastrous space weather is a hot topi c among solar - terrestrial physics and high technological fields. we propose that the future forecasting of the physical conditions that the violent solar disturb ance causes at the earth by propagating in solar wind depends heavily on the num erical method. this paper analyses the existing problems we are facing in the num erical prediction of disastrous disturbance events in solar - terrestrial space, an d then gives some suggestions for future study. for such a purpose, a six step sol ution method is developed to deal with one - dimensional symmetric interplanetary shock dynamics. it should be point out that that initialization of fully self - con sistent 3 - d mhd codes considering the solar - interplanetary - geomagnetic coupled r elations with initial - boundary values at 1r of the global output of solar pl asma and magnetic field using available solar observations is an essential requi rement in space weather operational codes for forecasting purposes

    空間災害性天氣的預報是日地物理學界及高科技領域的熱門話題.未來預測太陽劇烈擾動所造成的行星際風暴到達地球空間的狀態勢必藉助于數值方法.淺析了空間災害性擾動事件數值預報存在的問題及未來設想，針對這一目的對一維球對稱問題提出了處理行星際激波的6步求解方法，指出未來空間災害性擾動事件預報模式應是一個基於三維的以真實太陽風為背景自洽建立起來的、以太陽等離子體輸出及磁場全球結構為初邊值、太陽、行星際、地磁因果耦合模式
  14. However, the emission wavelength of a dfb - ld needs to be carefully turned on the predetermined wavelength grid by adjusting both laser temperature and bias current. furthermore, dfb - ld has such drawbacks as a relatively large variation of the lasing wavelength with ambient temperature ( ~ 0. 1nm / c ) which restricts its application in dwdm systems

    然而dfb - ld的激射波長受溫度（ 0 . 1nm ）和偏置電流的影響較大，只有通過調節dfb - ld的溫度和偏置電流，其激射波長才能被調諧在預置的波長處。
  15. Usually, it is thought that the lasing wavelength of a fgesl is locked at the bragg reflection wavelength of fiber grating ( fg ). owing to a relatively small dependence of the reflection spectrum of fg on ambient temperature ( - 0. 01nm / c ), the lasing wavelength of a fgesl is thought to behave more stable than that of a dfb - ld

    由於fgesl的激射波長主要由光纖光柵（ fg ）的布拉格波長確定，因此選擇具有合適布拉格波長的fg就能使fgesl的激射波長處于預置波長處；同時，由於fg的布拉格波長受溫度變化的影響相對較小（ 0 . 01nm ） ，因此fgesl與dfb - ld相比具有更高的溫度穩定性。
  16. Acoustic excitation signal is processed with wavelet analysis in this paper, and chooses characters related to adhesive capacity from acoustic signal in the time domain and frequency domain. these characters is the input of nerve network which is used to non - mangle test about mechanics capacity of adhesive structure, and establish the base for classify distinguishing effectively and forecast

    本文採用小波變換的方法對採集到的聲激勵信號進行分析，在時-頻域提取出與粘接性能有關的特徵量，用於粘接結構力學性能無損檢測的神經網路輸入，從而為有效進行分類判別和預報奠定了基礎。
  17. By end - june, total foreign exchange reserves had reached $ 230 billion, or 80 percent of gdp and four times short term external debt. most ( roughly four - fifths ) of the first half growth in reserves occurred in the first quarter

    財政部的報告說，日本對外匯市場的干預使日元售額達大約1380億美元，日本政府說這是針對「極度波動或過激」現象所作的反應。
  18. Because the qam signal which is small roll - up factor has big timing - error jitter in steady state that result in big timing jitter, an expression of impulse response for digital prefilter is deduced and a kind of sub - optimum design method for digital prefilter is proposed in this paper

    針對匹配濾波器滾降因子較小的qam信號的穩態定時誤差信號抖動較大，而造成較大定時抖動的情況。推導了一種用於減少定時抖動數字預濾波器的沖激響應表達式，並且提出一種數字預濾波器的設計方法，設計了一種優化數字預濾波器。
  19. In the short period since a collection of fishing villages were turned into a modern metropolis, hong kong has survived war, waves of refugees, pestilence, drought, assorted mischief by local leftists and economic near - implosions, consistently defying the doomsayers, repeatedly rebounding

    自從在釣魚島短期內轉變為一個現代化都市，香港就倖免于戰爭，難民的激增，瘟疫，乾旱，當地左翼分子和閉塞經濟等混合危害，一貫地不服從的兇事預示者，經濟的反復的波動。
  20. To solve the weak target detection under the clutter background, combined with dynamic chaotic model, the chaotic property of the laser echo signal is discussed and a novel algorithm is presented based on chaotic signal detection using neural network predictor

    摘要為了解決雜波背景下的激光微弱目標檢測的問題，結合混沌動態建模思想，討論了激光回波的混沌特性，提出激光信號非線性混沌序列的神經網路建模、預測及信號檢測演算法。
分享友人
分享到 Line

分享到臉書