軌道演化 的英文怎麼說

中文拼音 [guǐdàoyǎnhuà]
軌道演化 英文
orbital evolution
  • 軌 : Ⅰ名詞1. （路軌;軌道） rail; track 2. （比喻辦法、規矩、秩序等） rut; path; course Ⅱ動詞[書面語] （遵循; 依循） follow
  • 道 : Ⅰ名詞（道路） road; way; route; path 2 （水流通過的途徑） channel; course 3 （方向; 方法; 道理） ...
  • 演 : 動詞1 （演變; 演化） develop; evolve 2 （發揮） deduce; elaborate 3 （依照程式練習或計算） drill;...
  • 軌道 : 1 （供火車、電車等行駛的由條形鋼材鋪成的路線） track; pathway; rail; runway; circle; railway 2 （...
  • 演化 : evolution
  1. The asteroids are the most important small bodies in the solarsystem, and they mainly lies in the two locations - a main belt between the mars ' s orbit and the jupiter ' s and the near - earth space. the most feature of the orbits of near - earth asteroids ( neas ) is that the semi - major axes of the orbits are nearly equal to that of the earth or the perihelia distances are approximate to or even less than the mean distance between the sun and the earth, thus they could move into inside of the earth ' s orbit, so that they might close approach or even colliside with the earth ( or other planets, such as the venus, the mars, etc. ). the characteristic brings about some difficulties in the numerical research during their orbital evolution, which leads to the failure of the normalization technique in the general removal impact singularities of celestial mechanics methods and the symplectic algorithm which is successfully applied to the investigation in quality. by comparing the computation effects of several common numerical methods ( including symplectic algorithm ), and considering the nature of the movement of the small bodies, the corresponding treatments are provided here to improve the reliability of the computation

    小行星是太陽系最重要的一類小天體，主要分佈在兩個區域；火星和木星軌道之間的一條主帶和近地空間.近地小行星軌道的最大特點是其軌道半長徑與地球軌道半長徑相近，或近日距離接近甚至小於日地平均距離，其運動可深入到地球軌道的內部，這將導致該類小行星與地球（還有金星、火星等）十分靠近甚至發生碰撞.這一特徵給其軌道演化數值研究帶來一些困難，包括天體力學方法中一般消除碰撞奇點的正規化處理以及對定性研究十分成功的辛演算法都將在不同程度上失效.通過對幾種常用數值方法（包括辛演算法）計算效果的比較，根據小天體運動自身的特性，給出了相應處理措施，從而可提高計算結果的可靠性
  2. We would discover the keepings between the evolution of behaviorist learning theories and the reforms of chinese basic education by making a comparison between them. the final part is another focus. it analyze the implication of the evolution of behaviorist learning theories for the notions of chinese modern basic education reforms on the basis of analyses of the four parts mentioned above

    在以上四部分分析的基礎上，探悉了行為主義學習理論演化對中國現代基礎教育改革理念轉變的啟示:塑造良好行為習慣，適度發展技能;處理好行為發展與人格發展的關系;宏觀把握行為主義學習理論演進的邏輯，探索中國現代基礎教育改革的良性軌道。
  3. Graph theory, finite group acting on sets, orbit and equivalent relation are used to discuss the layout structure of networks for heat exchange, and a feasible optimization algorithm is given

    應用圖論、有限群對集合的作用、軌道與等價關系等刻劃了換熱網路布局結構，並給出了可行的優化演算法。
  4. To reconstruct the evolution and variability of the east asian monsoon during the late cenozoic on millennial, orbital and tectonic time scales. 3. to identify and better understand the links between tectonic uplift, erosion and weathering hemipelagic deposition, and climate change, including the evolution of the asian monsoon and the neogene global cooling

    Odp184航次1999年2月至4月間在中國南海進行鉆探取樣，通過鉆取半遠洋沉積，以期說明南海的新生代歷史，包括它的生物地層學、巖石地層學、年代學、古氣候學和古海洋學；重建千年級的晚新生代東亞季風的發展和演化、軌道和構造時間尺度；識別和更好地理解構造抬升、侵蝕和風化、半遠洋沉積和氣候變化，包括亞洲季風和晚第三紀的全球變冷。
  5. By numerical work, the time evolvement curves of the corrected solution, phase orbits and v - i characteristics demonstrated the deterministic chaos

    通過數值方法給出解的時間演化曲線、相軌道和伏安特性曲線，它們描述了系統中存在的確定性混沌。
  6. As ba star systems are evolved from g - k star systems, the distribution of orbital eccentricities and periods of ba stars can show the final orbital character of binaries

    由於鋇星系統是由普通紅巨星雙星系統演化而來，因此鋇星系統的軌道偏心率及周期的分佈顯示了經過質量吸積后雙星系統的最終軌道特徵。
  7. Comparing with the current observations, which include the number density distribution in space, mass function, etc., the so - called standard modes for both the power law and gaussian cluster initial mass functions are selected among many runs of simulations. the deviation from the standard modes, which is resulted from the change of the parameter for the initial conditions, is discussed in detail. the discussion of the model parameters is also presented although they are adopted as the typical values based on previous work

    對應一定的初始分佈我們發現無論是冪律的還是對數高斯的球狀星團初始質量譜經過長時間的動力學演化都會得到和現在銀河系觀測到的球狀星團系統相符的對數高斯的質量分佈；動力學演化會明顯地改變球狀星團系統的空間密度分佈，靠近銀心區域的球狀星團瓦解得更多；經過動力學演化后的球狀星團速度分佈函數在靠近銀心的區域明顯得不同於初始分佈，初始擁有較大軌道偏心率的球狀星團更容易瓦解。
  8. Based on the complex nonlinear system theory and contraposing the nonlinear time - dependent characteristic of complex economic system, this dissertation researches the structure, stability, equilibrium trajectory bifurcation and trajectory catastrophe phenomenon of evolution, the characteristics of the equilibrium catastrophe trajectory which is caused by parameters

    以復雜非線性系統的理論為基礎，圍繞復雜經濟系統的非線性時變特點，對非線性時變系統的結構、穩定性、演化過程中平衡軌道分岔現象和參數引起的軌跡突變現象進行了理論研究，研究了突變軌跡的相關性質。
  9. An on - line minimum - variance estimator was developed for thrust acceleration applied to orbit transfer using discrete - time radar measurements. the mass - flow - rate of propellant was selected as a state variant, which was estimated by employing an integral state model and ekf filter. the variation equations for measurement vector to mass - flow - rate have been established to linearize the discrete - time measurement equations. the algorithm has applied successfully to maneuver process in commanding satellite into geo - stationary orbit. the results show that the algorithm developed here can monitor and determine whether engine works well or failure precisely and quickly during orbit transfer process

    飛行器軌道機動過程中，為跟蹤、定位機動目標和干預機動控制過程，需要統計處理離散的雷達觀測量實時估計推進發動機的推力，進而確定飛行器的瞬時軌道參數.本文所述演算法是該工程問題的探討和解決方案.文章建立了軌道機動過程中連續變質量運動模型和離散雷達量測模型，推進發動機的質量秒耗量作為表徵推力加速度的一個近似常量，應用擴展卡爾曼濾波對離散的雷達測量數據進行順序統計處理給出秒耗量的最小方差估計;文章詳細地推導了線性化量測模型的變分方程和觀測矩陣;模擬結果表明該演算法能快速、準確地估計推進發動機的質量秒耗量和向機動目標施加的實際推力
  10. The characteristic brings about some difficulties in the numerical research during their orbital evolution, which leads to the failure of the normalization technique in the general removal impact singularities of celestial mechanics methods and the symplectic algorithm which is successfully applied to the investigation in quality

    這一特徵給其軌道演化數值研究帶來一些困難，包括天體力學方法中一般消除碰撞奇點的正規化處理以及對定性研究十分成功的辛演算法都將在不同程度上失效。
  11. Optimization of system and mission based on genetic algorithm ( ga ) about geo satellite using mpt has been probed after analysis of orbit dynamics, and building of mathematic model about geo satellite platform and each subsystem

    通過geo衛星軌道動力學分析，建立了衛星總體和各子系統的數學模型。採用遺傳演算法（ ga ）對mpt用於geo的ot和nssk進行了系統和任務優化計算。
  12. This image combines data from four different observatories : the chandra x - ray observatory ( purple ) ; the galaxy evolution explorer satellite ( ultraviolet / blue ) ; the hubble space telescope ( visible / green ) ; the spitzer space telescope ( infrared / red )

    這張照片是使用4架軌道天文臺的數據合成的：錢德拉x射線天文臺（紫） 、星系演化探測器（紫外波段，藍色） 、哈勃太空望遠鏡（可見光波段，綠色）以及斯必澤太空望遠鏡（紅外波段，紅色） 。
  13. Thirdly, give the analysis of the current status of the lack of data in the space debris environment modeling aera, and propose the plan to carry on the search of the modeling data, and use the genetic algorithms to solve the search problem

    接下來闡述了對空間碎片軌道參數分佈進行研究的原理，此原理轉化為求解優化問題的數學模型，提出採用遺傳演算法解決優化問題。 （ 4 ）進一步講述利用遺傳演算法和編制模式實現求解的過程。
  14. This paper presents one of the very first analyses of market evolution in such a dilemma by applying different methods to different market structures. as for the perfectly competitive market, it takes an evolutionary game perspective

    為了研究市場的渠道選擇，尋求市場演化軌跡，本文分別使用演化博弈的方法、傳統經濟模型的方法和一般博弈的方法對不同類型市場的渠道選擇進行模型研究。
  15. Because of continuity of load effects in time and space, displacement effects of previous time period in the latter time period and effects in various places have been taken into accounts. it is on these basis that the paper puts forward the dispersed counting way discrete algorithm based on such relationship, takes time - stepping integration to calculate rails " dynamic response, uses fortran language to write counting program, and conducts computer mock tests about rails " power response

    由於荷載作用在時間和空間上的連續性，因此考慮了前一時間段所產生的位移對后一時間段的影響以及不同位置的相互影響，在此基礎上提出了基於車輪、軌道、枕木相互關系的離散化演算法，採用時間步長積分計算了軌道的動力響應，使用fortran語言編制計算程序對軌道動力響應進行了模擬。
  16. When the self - adaptive procedure is combined with the genetic algorithm ( ga ), a complete algorithm of adjusting parameters and implementing calculation is formed. this algorithm is suitable for both level track and non - zero gradient track

    同時我們將上述自適應的計算過程與現代優化方法?遺傳演算法相結合，得到列車控制問題的參數調整與計算的完整的演算法，該演算法既適合水平軌道又適合帶有坡度的軌道。
  17. Since the energy of 18 - information track signal is concentrated around upper frequency and lower frequency, the frequency of the modulation signal is low, and it must have high resolution, we use zfft to detect it. as the energy of um - 71 signal is more concentrated, we use extreme value method to detect the frequency of modulation signal in frequency domain, which can satisfy the frequency resolution

    針對18信息軌道信號能量集中在上、下邊頻附近且低頻信息頻率低的情況，提出了用zoom - fft （ zoom指頻率擴展或細化，簡稱zfft ）演算法進行信號的局部放大檢測低頻信息，以提高信號的頻率解析度，而um - 71軌道信號能量集中在載頻附近，在頻域上採用極值法檢測低頻信息，即可滿足信號頻率解析度的要求。
  18. This thesis research on a kind of anti - defence technology named wary trajectory technology, which inherits from mobile changeable trajectory technology

    本文研究一種由機動變軌技術演化而來的跳躍式彈道技術。
  19. By means of the proposed reinforcement learning algorithm and modified genetic algorithm, neural network controller whose weights are optimized could generate time series small perturbation signals to convert chaotic oscillations of chaotic systems into desired regular ones. the computer simulations on controlling henon map and logistic chaotic system have demonstrated the capacity of the presented strategy by suppressing lower periodic orbits such as period - 1 and period - 2. meanwhile, the periodic control methodology is utilized, the higher periods such as period - 4 can also be successfully directed to expected periodic orbits

    該控制方法無需了解系統的動態特性和精確的數學模型，也不需監督學習所要求的訓練數據，通過增強學習訓練方式，採用改進遺傳演算法優化神經網路權系數，使之成為混沌控制器，便可產生控制混沌系統的時間序列小擾動信號，模擬實驗結果表明它不僅能有效鎮定混沌周期1 、 2等低周期軌道，而且在周期控制技術基礎上，也可成功將高周期混沌軌道（如周期4軌道）變成期望周期行為。
  20. One of approaches to the signal separation we developed in this paper is illustrated by the scheme of " prediction & cancellation " that based on local dynamical model of the reverberation

    本文重點研究兩種分離演算法，其一是基於混響動力學局部模型的「一步預測?抵消」法，其二是基於混響動力學軌道分佈性質的變尺度概率凈化法。
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