雷文達 的英文怎麼說

中文拼音 [léiwéndá]
雷文達 英文
revenda
  • 雷 : 1. （雲層放電時發出的響聲） thunder 2. （軍事上用的爆炸武器） mine 3. （姓氏） a surname
  • 文 : Ⅰ名詞1 （字） character; script; writing 2 （文字） language 3 （文章） literary composition; wri...
  • 達 : Ⅰ動詞1 （暢通） extend 2 （達到） reach; attain; amount to 3 （通曉; 明白） understand thoroughly...
  1. One of darwin 's friends, alfred wallace, was also a naturalist.

    達爾文的一個朋友阿爾弗雷德華萊士也是一位博物學家。
  2. The works of this paper are mainly about the study for ultra wide - band ( uwb ) signal radiating - designing for effective uwb antenna, and uwb signal scattering - investigating of composite scattering for targets upon ground. firstly, the radiating characters of uwb signal and development of uwb antenna are discussed an uwb planar horn antenna is designed this antenna is characterized with u - balun, simple construction and perfect performance

    本文的研究是「九五」國防預研「超寬帶（ uwb ）雷達體制及關鍵技術研究」項目工作的一部分，主要包括兩方面內容：超寬帶信號的輻射-高效超寬帶天線的研製；超寬帶信號的散射-地表目標的復合散射研究。
  3. At shengda, the downgraded diploma struck some students as a body blow, one that could cripple their chances of securing a good office job

    在升達，降級的文憑對於他們來說就如五雷轟頂，削弱了他們找個好的辦公室工作的機會。
  4. A sea - breeze front was clearly discernible over an area on the western part of the airport where outgoing winds ( the background wind, warm colours ) and incoming winds ( sea breeze, cold colours ) met. this new piece of equipment had enabled the observatory to issue in advance a windshear alert for that occasion

    清楚的顯示機場西面出現一道海風「鋒」 ，這正是遠離激光雷達的氣流背景風，暖色和趨向激光雷達的氣流海風，冷色相遇的位置。這套新的儀器令天文臺能夠于該天提早發出了風切變預警。
  5. A sea - breeze front was clearly discernible over an area on the western part of the airport where outgoing winds the background wind, warm colours and incoming winds sea breeze, cold colours met. this new piece of equipment had enabled the observatory to issue in advance a windshear alert for that occasion

    清楚的顯示機場西面出現一道海風「鋒」 ，這正是遠離激光雷達的氣流背景風，暖色和趨向激光雷達的氣流海風，冷色相遇的位置。這套新的儀器令天文臺能夠于該天提早發出了風切變預警。
  6. Radar target recognition ( rtr ) is very valuable for military application. the performance of rtr can be improved greatly by identity fusion. this dissertation deals with the rtr using data level and decision level fusion

    雷達目標識別具有巨大的軍事應用價值，通過身份融合技術能提高雷達目標識別的性能，本文主要研究數據層和決策層融合雷達目標識別。
  7. In this dissertation, a study is performed about rules and methods of evaluation on effects of radar eccm. firstly, the representative methods of radar eccm are briefly introduced

    論文的主要工作如下: （ 1 ）在簡要闡述雷達抗干擾原理的基礎上，對目前的典型抗干擾技術進行了討論和分析。
  8. A interception probability reduction theory by means of comparing the rppm with constant pri pulse sequence is also analysised in this paper, further more the strong properties of eccm of the rppm is discussed and analysised

    此外，本文還介紹了隨機脈位調制信號比較于等重復周期（ pri ）脈沖信號來降低信號被截獲概率的原理，討論並分析了隨機脈位調制脈沖多普勒雷達較強的抗干擾能力。
  9. The method of radar optimize embattle and the detection techniques for radar networks are studied in this paper

    本文研究雷達組網優化布站方法和融合檢測技術。
  10. Based on the research mentioned above, the paper introduces the method of how to realize basal software, combing the processing of high frequency ground wave over - the - horizon radar signal and the capability of dsp

    在此基礎上，本論文又針對工程實現的具體要求，結合高頻地波超視距雷達信號的信號處理方法與dsp性能，敘述了信號處理機的基礎軟體編程的具體實現。
  11. High frequency radar is also a high frequency ground wave super resolution radar used on the seaside, and meantime it is one of projects of national 211 for building subject. this paper based on high frequency radar and modern signal processing describes the component of the high frequency radar on function and hardware. the signal that the radar system used mostly decides the capability and the complex of the radar

    雷達系統所用的信號體制、信號形式決定了在很大程度上決定了雷達的性能指標，雷達系統的復雜度，本文主要研究基於軟體高頻雷達的多體制信號的數字化產生與接收，目的在於產生一種或者多種能夠軟體高頻雷達所適用的信號，並且這種信號不會給小型化的系統處理帶來過高復雜性。
  12. Mixers are the key components of many microwave and millimeter - wave systems. the super - heterodyne receiver is always applied in modern communication system, mixer becomes the key component as is at the first part of system. but it is more and more difficult to get the choiceness lo source of the same band with the system is working at high frequency especially in the millimeter - wave. sub - harmonic mixer is a good solution to this problem now. in this circuit we need just half 、 quarter 、 even 1 / 8 of the rf signal frequency. in this paper the design and fabricate of sub - harmonic hmic mixers ( 2, 4 ) at w - band are introduced

    混頻器是微波通信、射電天文學、雷達、等離子物理、遙控、遙感、電子對抗，以及許多微波測量系統中至關重要的部件。在現代通信系統中，毫米波頻段通常採用超外差接收機，混頻器作為第一級就成為關鍵部件。由於在毫米波頻段，同頻段高性能的本振源成本高，技術難度大，採用分諧波混頻技術是解決此問題的有效途徑，只需射頻頻率1 / 2 、 1 / 4甚至1 / 8的本振頻率即可實現混頻。
  13. Based on the model of safe following distance, the design blue print of system is presented in the text. using the multiple impulses horae rotate speed sensor to measure the vehicle speed and nanometer radar to measure the distance of own vehicle to frontal vehicle, and analyzing and judging collected information by at89c51 which is the control centre of the system

    本文在安全跟車模型的基礎上，提出了系統方案：採用霍爾多脈沖轉速傳感器測量汽車的速度，毫米波雷達測量兩車的距離和相對速度，利用at89c51作為信息採集單元的控制中心，對各種信息進行分析判斷，當行車距離小於報警距離時啟動相關的報警單元。
  14. In this paper, the signal processing of sum and difference patterns of amplitude dual - plane monopulse radar and the effect of amplitude - plane non - consistency are analyzed from the coordinates relationship of four - horn antenna at length, and its corresponding simulation is verified, which bring convenience to engineering implementation

    文中從四喇叭天線的位置坐標關系，詳細分析了雙平面振幅和差式單脈沖雷達信號處理過程以及三通道幅相不一致性的影響，並且進行了相應的模擬，為工程實現帶來了很大的便利。
  15. In order to make the terminal airspace moderated and consisted, and acquire the biggest capacity of airport, we must consider the influencing factors as many as possible, it is our final target to plan the airspace in beijing terminal unify. with the conditions that the current operation modes of parallel runway, approach and departure procedures and terminal airspace in beijing international airport, this article has analyzed the reasons of airspace congestion. this article also applies the theory of instrument flight procedure and utilizes the current facilities in beijing international airport. the design of flight procedures combining rnav procedures with instrument approach procedures may be accepted on some routes. it make the approach and departure procedure more effective, and increase the capacity of the airport more or less ; secondly, this article contrast the capacities of parallel runway in different methods under radar control, and make the conclusion that the parallel runway in dependent operation modes has the biggest capacity

    本文從目前首都機場平行跑道的運行方式、進離場程序、終端區空域的現狀入手，剖析了造成空域緊張的原因，應用儀表飛行程序設計的思想和原則，利用首都機場終端區現有的設施，某些航線可採用區域導航（ rnav ）程序與儀表進近程序相結合的飛行程序設計，優化了目前首都機場的進離場程序，在一定程度上增加了機場容量；其次，研究了雷達管制條件下平行跑道不同運行方式的容量對比，得出平行跑道獨立運行的容量最大，然後以這種這種運行方式，為首都機場設計出了平行跑道獨立運行的飛行程序；最後，分析北京終端區各機場空域對首都機場飛行程序安全、有效運行的制約因素，研究設計出了北京終端區規劃方案及規劃后的飛行程序和飛行方法，以達到增大機場的容量，適應未來航班量增加的需求。
  16. Virtual tour to the observatory lidar

    網上暢游：天文臺激光雷達
  17. From the model study of the fractal random rough surface, we acquire one dimensional ? two dimensional fractal random rough surface model with fractal theory ; 2. the calculation of the scattering field of light ; the establishment of the scattering light ’ intensity model, and the number calculation of the intensity distribute ; 3. the study on the laser radar cross section of one - dimensional fractal rough surface target ; and the number calculation of the scattering intensity of two - dimensional fractal the rough surface target ; 4. through shadowing effect, we analysis light scattering characteristic of fractal rough surface

    本論文利用分形理論得到一維?二維分形隨機粗糙表面模型，研究光在一維?二維分形粗糙表面的光散射特性，主要從以下四個方面分析: 1 .自仿射分形隨機粗糙表面模型探討，採用分形理論得到一維?二維分形隨機粗糙表面模型; 2 .分形粗糙表面散射光場的計算和粗糙表面散射光強角分佈的模型建立和數值計算; 3 .一維分形粗糙表面目標的激光雷達後向散射截面lrcs研究和二維分形粗糙表面目標散射強度數值計算; 4 .引入遮蔽效應分析分形粗糙表面光散射特性。
  18. According to collecting and analyzing the fault information of the jyl - 6 weather radar which is assembled in one of the main planes of the air force, we found the vulnerability on the radar ? design and technics. then we made some correction and the product ? dependability is improved

    本文通過對配裝空軍某重點飛機的jyl - 6氣象雷達研製、生產、使用中的故障信息進行統計、分析，找出該雷達設計、工藝中存在的薄弱環節，加以改進。
  19. At present, is included by the united nations the world culture and the natural heritage scenic spot historical site and the natural landscrape has 14, namely the london tower, ( the congress building ), the cloth roentgen heym palace ( nearby oxford ), the kanter uncle thunder host church, the buss city, salisbury suburb megalith and so on the vestige, the iron bridge canyon ( west of wool fertile hampton ), fang tingsi the monastery and the botanical garden ( york by north ), dallam ' s cathedral and the ancient castle, the harder good great wall ( area newcastle ), gwynedd ' s castle group ( area the welsh carnarvon ), scotland ' s saint kiel reaches the archipelago, north blue likes " road of the giant " being with pacific ocean ' s on england enjoys the german woods coral island

    目前，被聯合國列入世界文化和自然遺產的名勝古跡和天然景觀就有14處，即倫敦塔、威斯敏斯特宮（國會大廈） 、布倫海姆宮（牛津附近） ，坎特伯雷主教堂、巴斯城、索爾茲伯里郊區的巨石陣等遺跡，鐵橋峽（伍爾沃漢普頓以西） ，方廷斯修道院及園林（約克以北） 、達勒姆的大教堂和古城堡、哈德良長城（紐卡斯爾一帶） ，圭內斯的城堡群（威爾士卡那封一帶） ，蘇格蘭的聖基爾達群島，北愛蘭的「巨人之路」和太平洋上的英國屬地享德森珊瑚島。
  20. By the means of integration of theory with practice, the way how the dangerous weather factors affect the flight safety and the way to deal with have also been analyzed. at last, this thesis analyzed the flight accident at wuhan on 22nd, june, 2000. with synoptic chart, code, satellite nephogram, and radar chart, this thesis explained how the dangerous weather affects the aviation flight safety

    文章最後，採用系統分析方法，對2000年6月22日武漢空難事故產生的天氣因素進行了綜合分析，通過對事故發生期間的天氣圖、電碼、衛星雲圖和雷達圖進行系統分析，指出了造成這次事故存在的危險天氣種類，它們的演變過程，對飛行安全的影響。
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