環行天線 的英文怎麼說
中文拼音 [huánhángtiānxiàn]
環行天線
英文
looantenna-
An acclimatised britisher he had seen that summer eve from the footplate of an engine cab of the loop line railway company while the rain refrained from falling glimpses, as it were, through the windows of loveful households in dublin city and urban district of scenes truly rural of happiness of the better land with dockrell s wallpaper at one and ninepence a dozen, innocent british born bairns lisping prayers to the sacred infant, youthful scholars grappling with their pensums, model young ladies playing on the pianoforte or anon all with fervour reciting the family rosary round the crackling yulelog while in the boreens and green lanes the colleens with their swains strolled what times the strains of the organtoned melodeon britannia metalbound with four acting stops and twelvefold bellows, a sacrifice, greatest bargain ever.
那個夏天的傍晚，當雨住了的時候，他站在環行線鐵道公司機豐駕駛室的踏板上，隔著都柏林市內和郊區那些恩愛之家的窗戶，瞥見幸福的地地道道牧歌式的鄉間生活，墻上糊的是由多克雷爾120店裡買來的每打一先令九便士的墻紙。這里，在英國出生的天真爛漫的娃娃們，口不清地對聖嬰作著禱告年輕學子們拼死拼活地用著功模範的淑女們彈著鋼琴，或圍著噼噼啪啪燃燒著的那截聖誕夜圓木，闔家念誦玫瑰經。The following are the large projects undertaking by haifeng company : crude oil electricity plant project of north china oil field hydroelectricity factory, apartment ( 22 stories ) of yuanda real estate company of dalian shipping group, helios hotel of helios group in dalian development zone, tilt aqueduct bridge of shanxi hongqi reservoir ( total span : 267m ), supply and sale building and city construction building ( both are antique architectures ) of shanxi heyang city, sea drainage pipe of hainan fudao fertilizer factory ( 1520 ), 8 oilgas docks of hainan haiyan oilgas company, basha condensable gas transfer station of haiyan company, 10, 000m3 oilgas storage tank of arco company ( usa ) in hainan nanshan, gas pipe and fuel gas installation project of hainan nanshan electricity co., ltd, base and accessory project of hainan gas company, bei da huang cereal and oil market in harerbin, hainan cross island pipe, changhuajiang river pipe crossing project, taihangshan mountain earthwork project ( the 19th section of west - to - east gas transmission project )
海南海峰公司承建大的工程項目：華北油田水電廠原油發電站工程；大連船泊集團遠達地產公司的遠達公寓（ 22層） ；大連開發區香港太陽神集團的太陽神大酒店；陜西紅旗水庫斜拉渡槽工程（全跨267m ） ；陜西合陽供銷大樓及城建大樓（均為仿古） ；海南富島化肥廠排海管線（ 1520 ） ；海南海燕油氣公司八所油氣碼頭；海燕公司白沙液化氣中轉站；海南南山美國阿科公司儲油氣萬立米大罐工程；海南南山電力股份有限公司天然氣管線及燃氣安裝工程；海南南海天然氣有限公司基地及配套工程；哈爾濱北大荒糧油批發市場；海南環島管線；昌化江穿越工程；西氣東輸十九標段，太行山土石方工程。To keep the environment people live in, we should restrict or prevent many kinds of pollution, which includes electromagnetic radiation pollution. while we are considering setting up base station or evaluating the electromagnetism pollution of environment, we can measure on the spot. to save time, hard work and cost taken by measuring on spot, it is necessary to calculate and analyze the electromagnetic wave propagation in urban area
在對現有電磁輻射源（如移動通信基站、廣播電視發射天線等）環境電磁污染狀況進行評估時可以進行實地測試，但是對在建或擬建的輻射源則不可能進行先測試，同時為了避免實地測試的費時、費力和較大的測試費用，通過計算機來計算分析城市環境電波傳播顯得很有必要。The radiation pattern of the antenna is more rotationally symmetric, and a more reduction on the sidelobe levels of the antenna is achieved as compared to the antenna with the corrugated soft surface. in conclusion, in the present thesis both theoretical and experimental research works have been carried out intensively on patch antennas based on photonic - bandgap structures. it is shown that our photonic bandgap structures can greatly improve the performance of the patch antennas
該平面圓環結構軟表面天線是在空氣介質的皺褶圓環結構軟表面天線的基礎上改進得到，為了便於比較，我們首先研究了空氣介質的皺褶圓環結構軟表面天線，用fdtd方法並結合pml吸收邊界條件對該天線的性能進行了研究，結果表明天線的帶寬增加，天線的軸對稱性得到了很大改善， e面和h面方向圖的波束幾乎重合，天線的旁瓣和背瓣受到很大的抑制。1. analyse two - axis antenna platform based on rate gyroscope with the method of kinematics, conclude the stabilization condition of two - axis antenna, provide the theory reliance for closed loop scheme based on gyroscope. 2
一、對基於速率陀螺的兩軸天線平臺進行了運動學分析，得出了兩軸天線穩定的條件，為陀螺閉環方案的採用提供了理論依據。The spot responder system which is the necessary part of ctcs is analyzed in the dissertation and three key technologies of the channel in the responder system are researched. firstly, a new kind of rectangular plate magnetic inductive loop antenna is designed to transmit the power frequency. researching the near field inter - inductive characters, the relationship among the inductive efficiency, the perimeter and the conductor width of the antenna is found out
本文在對ctcs中的點式應答器系統原理及組成進行分析和消化的基礎上，對系統中通道的幾個關鍵技術進行了詳盡的研究，主要分為三個方面: 1 ，提出並研製了新型的片式環形磁感應天線，並對傳輸能量載波的天線的近場互感特性進行了分析，得到互感效率隨天線的周長大小以及導帶寬度的變化規律，並通過計算機模擬和試驗對天線的近場波瓣圖進行了研究;通過分析寬帶匹配技術中的實頻法理論，設計了信號載波天線的寬帶匹配網路。The roads in the city are all separated by trees, and the circular and triangular road dividers at traffic junctions are covered with flowers and plants. flowers bloom on the rooftops of bus stops, and amazingly, even pedestrian bridges and lamp posts are swathed in vines and speckled with flowers
市區干線車行道都以樹木隔界交叉路口的環行和三角地也鋪種花草候車頂棚鮮花吐艷更令人驚嘆的是，就連那行人天橋和路燈立柱，也爬滿藤蔓，綴滿花朵。In this paper, the vacuum thermo - cycling effects and vacuum ultraviolet effects on space inflatable structural materials were analyzed based on a thorough survey over the studies done through flight tests, ground simulation experiments and theoretical research. the main contents of this thesis are as follows : the performance damage effects of thermo - cycling on space inflatable structural fabric carbon fiber reinforced epoxy laminates ( cf / ep ), aluminized kapton ( al / kapton ) films which used as reflector of space inflatable antenna were investigated by a temperature range of - 120 120 with the vacuum degree 10 - 5 pa which conducted with space environment ground - based simulation facility
本文在對國內外飛行試驗、地面模擬試驗以及理論研究等所取得的成果調研的基礎上，針對空間充氣結構材料進行地面模擬真空熱循環與真空紫外輻照的研究工作:利用真空熱循環地面模擬試驗機研究了真空環境（ 10 - 5pa ）中- 120 120的熱循環條件下空間充氣支撐結構織物碳纖維增強環氧樹脂（ cf / ep ）層合材料、空間充氣展開天線反射面鍍鋁聚酰亞胺（ al / kapton ）薄膜的空間環境效應。According to wireless and mobile communication system ' s background, this thesis study on estimation of time - varying dispersive channel from four respects : ( 1 ) aid of pilots, ( 2 ) cyclic prefix ( cp ), ( 3 ) blind method, and ( 4 ) ofdm system with multiple transmitting antenna, in which the typical ways is decision - feedback algorithm and self - adaptive block algorithm
本文以無線和移動通信系統為背景，從四個方面對時變色散通道下的ofdm系統的通道估計和均衡問題進行了研究。第一是基於導頻符號的通道估計方法，第二是基於循環前綴的通道估計方法，第三是通道的盲估計方法，第四是基於多天線ofdm系統的通道估計和均衡方法的研究。In the paper, a weight - solving model with non - blind algorithm for smart antenna in the wireless cdma system is introduced, and the simulation is conducted by means of self - adaptive iterative methods, and then, three kinds of non - blind algorithm simulation results are obtained with different dynamic environments, and the performance comparisons are illustrated
摘要介紹了無線通信cdma系統中智能天線非盲演算法求權模型，用迭代的自適應演算法進行了模擬，獲得了三種常用的非盲演算法在不同運動環境下的模擬結果，並進行了性能比較。In the first part, performance comparison of two different smart antenna systems is analyzed in uplink ; the inherent advantages and disadvantages are evaluated with channel complexity considered
一是針對上行研究了兩種不同智能天線陣列系統的應用性能比較，考慮了通道環境復雜性的影響，綜合評估這兩個不同陣列系統的優缺點。The radiation patterns of 4 - elements and 6 - elements circular reflection arrays in different distances between the active element and the passive element, and different length of the passive element are calculated, which shows that the additional passive elements can improve the pattern of the circular array, and decrease the differences between beams, and produce several equal wavebeams
首次提出了一種新型的智能天線陣列結構，即圓環反射陣列，並就四、六元圓環反射陣列的情況分別對標準反射陣列和非標準反射陣列進行了詳細的分析研究，計算了不同間距、不同反射振子長度的方向圖。Central mtr exit a, take footbridge to exchange square bus terminus and then bus 15 to the peak or central mtr exit k, walk towards the harbour and the star ferry pier. take bus 15c to the lower peak tram station on garden road. take the peak tram and get off at the upper peak tram station
乘地鐵到中環，取道a出口，走過人行天橋到交易廣場巴士總站乘搭15線巴士往太平山頂或於中環地鐵站k出口朝海旁方向走至天星碼頭，乘搭15c線巴士往花園道山下纜車站，然後轉乘纜車登上太平山頂。Previous research on the ad hoc network almost aim at omnidirectional antenna of all receivers and transmitters, or as a default attribution. in my thesis, firstly i describe the advantages of the directional antenna at many aspects which including spatial division multiple access ( sdma ), the antenna gain, anti - interference etc. and analyze the possibility about the directional antenna used for the ad hoc networks, secondly i study its multiple access and routine protocols using the directional antenna. and compare the protocol difference and network " performance between omnidirectional and directional antenna in particular environment
首先闡述了定向天線在網路空分復用（ sdma ） 、天線增益、抗干擾等方面的的優勢，分析了定向天線用於移動自組網的可行性，接著重點研究了基於定向天線的多址接入協議和路由協議，分析了與全向天線在組網和協議實現中的異同點和優缺點，並對特定的環境下的網路性能作了對比。Abstract : the single toroidal non - reciprocal ferrite phase shifter that isthe key components of a phase array antenna is studied to develop the phase array antenna for autotracking synchronous communication satellite
文摘:為了研製自動跟蹤同步通信衛星平板相控天線陣系統，對相控陣天線中的關鍵元件單環非互易鐵氧體移相器進行了研究。This paper investigates the propagating characteristics of the layered earth in a loop antenna case, the result can be served as a helpful guideline for the system design and application
對環狀發射天線情形下分層大地的有關通道特性進行了探討，以期為該系統設計及工程應用提供有益的指導。The system solves the problem of information transmission by using microwave communication including heights design of microwave antenna to ensure the power of communication. the author studies the theory of malfunction control, and to control the system by the circular code system and to use error control by redundancy method, to ensure the reliability of the communication
系統採用微波通信技術解決信息傳輸的難點，從天線高度設計、冗餘法差錯控制，循環碼制選擇等方面保證通信的可靠性，採用沖突避演算法防止通信沖突，使系統有序地進行工作，並充分地利用了通道，也提高了工作效率。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Discussions and preliminary experiments are given for some potential applications of left - handed materials. experimental results which are in accordance with expects for the focusing of plane wave using symmetric rings and the focusing of radiate source using rings are obtained. simulation results are also obtained concerning the - like structure based backward radiate antenna and transmission line based left - handed structures
對稱環結構異向介質凹透鏡的平面波聚焦、結構異向介質的點源會聚等實驗都得到了和預期接近的初步結果；對基於結構全固態異向介質後向波介質天線微波異向介質的實驗研究和基於微帶電路結構單元的異向介質進行了計算機模擬研究，也取得了較好的結果。The full - digital servo control system of satellite antenna has already passed the whole satellite payload system test. the result shows that the system has good speed stability, high precision scan period and can work reliably under the simulative space environment
本文所設計的衛星天線全數字伺服系統已通過衛星有效載荷系統的聯試實驗，結果表明：該系統具有較高的轉速穩定性和高精度的掃描周期，可以在外太空模擬環境下長期可靠地運行。分享友人