隨機傳播 的英文怎麼說

中文拼音 [suíjīzhuànbō]
隨機傳播 英文
random propagation
  • 隨 : Ⅰ動詞1 （跟; 跟隨） follow 2 （順從） comply with; adapt to 3 （任憑; 由著） let （sb do as he li...
  • 機 : machineengine
  • 傳 : 傳名詞1 （解釋經文的著作） commentaries on classics 2 （傳記） biography 3 （敘述歷史故事的作品）...
  • 播 : 播名詞（姓氏） a surname
  • 隨機 : random stochasticrandom
  • 傳播 : 1 （廣泛散布） disseminate; propagate; spread; （over）; diffuse; transmit; run 2 [物理學] propag...
  1. The ionosphere is a complex medium, which is aeolotropy, asymmetry, dispersive and changes randomly with time. in order to improve the communication quality of the shortwave that depends on the ionosphere, we should have aknowledge of the current condition of the ionosphere in real time. the backscatter sounding of high frequency can diagnose the real - time channel characters for shortwave communication or hf radar, which is great assistant to shortwave communication and hf radar

    電離層是隨機時變，各向異性，非均勻、色散的復雜介質。為了保證依賴于電離層進行的短波通信質量，必須了解電離層的實時狀態信息。高頻返回散射探測可以實時監測與短波通信或高頻天波雷達相關的天波傳播通道的狀態，對短波通信和天波雷達工作起了重要的輔助作用。
  2. Theoretical researches on solar activity, solar flare and cme were involved in many fields of foundational physics such as plasma astrophysics, magnetohydrodynamics ( mhd ) and so on. the forecast of solar activity, a main branch of space weather, was becoming more and more significant for preventing space disaster and for many aspects of space science

    探索太陽活動的規律、太陽耀斑及其伴隨cme的先兆、觸發過程及能量傳播機制等等，從理論上推動了等離子體天體物理、磁流體力學等諸多基礎理論的發展，有著重要的理論意義；而對太陽活動的預報，是國際前沿科學?空間天氣學的重要組成部分，對避免空間災害、為航空航天科學提供服務等方面，具有重大的實際應用價值。
  3. Normal mode fluctuation of sound propagating in random shallow water

    隨機淺海聲傳播簡正波起伏
  4. In wireless communication, the relative movement between the transmitter and the receiver may cause the change of the electromagnetic wave propagation path, thus makes the channel become a random time - variety channel

    在無線通信中，發射機和接收機之間的相對移動會造成電波傳播路徑的改變，從而使通道變成隨機時變通道。
  5. 9 the 4d architecture for network control and management. http : www. cs. cmu. edu sim4d. 10 papalilo e, freisleben b. towards a flexible trust model for grid enviroments

    網路異常和攻擊行為具有多樣性隨機性隱蔽性和傳播性等特點，現有的網路模型難以對其進行描述分析。
  6. ( 2 ) it is the tactics of keeping the seed storehouse under the adverse environment that seed spreading has the dispersiveness of time, space heterogeneity of the seed spreading and the dormancy in summer, ( 3 ) the seed coat of lepidium pertoliatum l. and lepidium apetalum willd. make the seed bigger, which is useful to promote the seed sprouting and developing of seedling by absorbing the around moisture

    具體表現為： （ 1 ）植物的生長發育以及植物的生長節律，均受到環境的影響； （ 2 ）種子的分批成熟，種子傳播具有空間隨機性以及種子具有夏季休眠的特性，都是種子在惡劣環境下保存種子庫的策略（ 3 ）抱莖獨行菜和獨行菜的種衣一方面可以使種子大粒化，另外還利於吸收水分有助於促進種子萌發和幼苗發育，這些對種群的延續具有重要的意義。
  7. In chapter 7, we combine the monte carlo simulation and optimiza - tion. we first introduce the monte carlo simulation of light transport in tissue, explain how to generate the random num

    首先我們介紹了光在組織中傳播的蒙特仁羅模擬的完整過程，解釋了如何利用第2章中介紹的隨機數生成方法根據實際問題產生隨機數。
  8. The rain area is regarded as a random background medium, and the scattering field and backscattering matrix of the cylinder target in rain are gained. in the coherent case, the power of cylinder target in rain and air and their optimum polarization states are studied by the three - step method

    在研究雨中目標時，本文把雨區看成隨機的背景介質，利用波傳播理論、目標的邊界條件，得出介質圓柱在雨中的散射場、後向散射矩陣，並進行了相關計算。
  9. The propagules of b. gymnorrhiza and a. corniculatum undergo some growth before becoming detached from the parent plant. they accumulated large amounts of ions during the development while the level of ion concentrations are consistently lower in their embryos compared to leaves of parent plant. before detachment, the growth of hypocotyls were reduced, the water content declined, while the osmotic potential was approaching to or more negative than that of the solution on which their parent plant vegetating

    另一方面維持較大比例的有機滲透調節劑，控制細胞液中鹽離子的水平以減少代謝毒害；木欖成熟胚軸的密度接近或低於生境中海水的密度，適于隨水漂浮和傳播；胚軸內離子濃度呈下降趨勢，但最終以達到和母樹生境中的離子濃度水平相一致為目標。
  10. The propagation of wireless signal is extremely random

    無線信號的傳播具有極度的隨機性。
  11. Influenza can be spread by sneeze droplets

    一個噴嚏，流感病毒便趁機隨著飛沫四處傳播
  12. At present, the police in our country mainly through the " unit administration mode ", which merely emphasizes the administration of the website units, to execute this administration. however, with the rapid development of internet and expansion of its function, this administrative mode is under great impact, simultaneously, the police with the mode is challenged in terms of its management range, its administrative function, its management conception and so on. consequently, it inevitably results in some problems during the isa, such as blurring the borderline of the management, losing the balance of the role orientation and ignoring the importance of the people online

    我們目前實行的是一種以網站提供單位為管理對象的「單位管理模式」 ，但隨著網際網路的高速發展和網路功能的大幅拓展，這一模式之下的公安機關的管理幅度、管理職能及管理理念等均受到了極大的沖擊，難以避免的出現管理邊界模糊、角色定位失衡、網上民眾邊緣化等弊端，加劇了網際網路上病毒與有害信息的傳播及涉網違法犯罪案件的上升，也致使網上警民關系的緊張和警力資源的嚴重不足。
  13. The effects of observing scale on the measurements of acoustical velocity were studied by ray theory and equivalent medium theory

    分析了聲波頻率影響傳播速度的機理，給出了不同溫度不同壓力條件下聲波速度隨頻率變化關系的實例。
  14. In pace with the rapid development of the technique of modern science, especially the technique of electronics, multi - medium and net work, the teaching medium has developed from traditional ways like blackboards, wall maps, all kinds of models into various electronic ones as projectors, projecting apparatus broadcast, movie and television etc. and today ' s multi - media, calculator network and long - distance teaching bestow new contents and connotation on the modern teaching medium

    隨著現代科學技術的突飛猛進，尤其是電子技術、多媒體技術和網路技術的飛速發展，教學媒體已由傳統的黑板、掛圖、模型等發展到各種電化教學媒體如投影儀、幻燈機、廣播、電影、電視等。而今天的多媒體、計算機網路、遠程教學，更為現代教學媒體賦予了新的內容與涵義。
  15. Obtained by emtp program and the egm, this paper studies on lightning protection performance on 500kv double circuit transmission line the distributed parameter model of tower is built when analyzing the back stroking lightning protection performance for double circuit line, it can truly reflect the spreading course of lightning current on the tower, furthermore, considering the randomness of working voltage ' s phase when lightning strokes the top tower and supposing the probability of lightning appearing arbitrary phase in a cycle of ac is equal, this paper brings forward the statistical method to calculate the rate of back stroking on double circuit line

    本文利用emtp程序、擊距法對500kv同桿雙回線路的耐雷性能進行了研究。在分析同桿雙回線路的反擊耐雷性能時，建立了桿塔的分佈參數計算模型，此模型可以真實地反映雷電流在桿塔上的傳播過程。並針對雷擊塔頂時，導線運行電壓相位角的隨機性，本文假定雷擊出現于交流一周期的任一角度區間內的概率相等，提出了利用統計法計算同桿雙回線路的反擊跳閘率。
  16. Based on the difference of maximum modulus evolution between signals and random noises in multi - scale space of wt, the signals from shaking table test are processed for random noise reduction

    摘要本文利用小波變換下有效信號有隨機噪聲在多尺度空間中模極大值不同的傳播特性，對地震模擬振動臺試驗測試信號進行去噪處理，取得良好效果。
  17. In this paper, a new heterogeneous anisotropic constitutive model of fractured media was presented, and the properties of elastic waves excited from a two - dimensional ( 2d ) point source propagation in 2d fractured rocks were investigated by the pseudo - spectral method ( psm )

    本文提出了一種新的非均勻各向異性隨機裂縫介質本構模型，用偽譜法模擬了二維點源產生的彈性波在二維復雜巖石中的傳播。
  18. The internet news ethics develops along with the computer and the internet technology production and application and arouses the concern gradually in the news dissemination domain

    網路新聞倫理問題是隨著計算機和網際網路技術的產生和發展並應用於新聞傳播領域而逐漸出現並引起關注的。
  19. Finally, the results are compared with periodic and random chains. then we studied acoustic wave propagation in 1d quasiperiodic and aperiodic systems by means of he transfer matrix. transmission rate, reflection rate, energy flow, logarithmic energy flow, energy density and lyapunov exponent are computed numerically, and compared with periodic and random system

    其次研究了聲波在幾種一維準周期和非周期系統中的傳播，通過轉移矩陣的方法，數值地得到了系統的傳播系數t _ n 、反射系數r _ n 、能流密度j _ n ，能量密度e _ n和lyapunov指數，給出了以上各量與傳播長度n以及頻率之間的關系，同時發現能流及能量密度都具有分形結構，並與周期和隨機系統的結果作了比較。
  20. Multibeam base - station smart antennas are discussed in this paper. we analyze the outage probability of mobile communication system suffering both fast fading and shadowing by means of statistical propagation model, and contrast the case that adopt multibeam smart antennas to the case that adopt omnicase. the results emulated by computer show that the outage probability of mobile communication system will diminish as the increasing of the number of beams using smart antennas no matter when suffering a single co - channel interfence or six ones

    研究了移動通信環境下的多波束智能天線，並基於統計傳播的同通道干擾模型，分析了快衰落及慢衰落情況下未採用多波束智能天線與採用多波束智能天線時的中斷率，並進行了比較.計算機模擬結果表明：採用多波束智能天線，不論在單個同通道小區還是多個同通道小區情況下，系統的中斷率將隨著波束數的增大而降低
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