輻射近場區 的英文怎麼說

中文拼音 [fúshèjìnchǎngqū]
輻射近場區 英文
radiating near-field region
  • 輻 : 名詞（車輪中車轂和輪圈的連接物） spoke
  • 射 : Ⅰ動詞1 （用推力或彈力送出） shoot; fire 2 （液體受到壓力迅速擠出） discharge in a jet 3 （放出） ...
  • 近 : Ⅰ形容詞1 （空間或時間距離短） near; close 2 （接近） approaching; approximately; close to 3 （親...
  • 場 : 場Ⅰ名詞1 （平坦的空地 多用來翻曬糧食 碾軋穀物） a level open space; threshing ground 2 [方言] （...
  • 區 : 區名詞（姓氏） a surname
  • 輻射 : radiation; exposure; radio; beaming
  1. First, it was taken that a discuss about the effects of geometry parameters of each piezocrystal on direction parameters ( main lobe width, side lobe amplitude, elimination of grating lobes ), amplitude of ultrasonic pressure, element viberation pattern, mutual radiation among elements, efficient test regions, ability to keep accurate and near - field distance and so on. based on the direction of ultrasonic field in ulpa deduced by ourselves. in addition, on the base of integrating all kinds of factors, it was put forward that the principle and method for optimized design of geometry parameters of piezocrystals in ulpa transducer, and its design programme and interface were compiled

    首先在推導超聲相控線陣換能器聲場的指向性的基礎上，就各個晶片幾何參數對指向性指標（主瓣寬度、旁瓣幅度、消除柵瓣） 、聲壓幅值、陣元振動模式、陣元間互輻射、有效檢測區域、精確控制能力、近場長度等方面的影響進行了論述，並在綜合各方面影響的基礎上，提出了晶片幾何參數優化設計的原則和方法，編寫了設計程序和界面。
  2. Baoding city north downtown in municipal people government make selection to hand over the a brigade in the municipal with the south, wide railroad in city to the west, the northwest of the wreath postpones to the east of district, developments city ? that market covers 27 acre, a prosperous district, be apart from original flowers and birds the fish the insect the market the shortage a kilometer of, the transportation is convenient, having six hand over the route goes directly to here, exit the highway keeps the 107 country way with wide superhighway in city, near two in the last years, the square circle in that district sets up to have the small area of upscale residence in inside in some one after another inside two kilometers of scopes, living a high income family, intend to see the inside of protecting and settling north downtown of municipal the agriculture makes sight - seeing trip the park the item among them have the flower and grass plant, feeding the fish insect etc. profession park to act in cooperation mutually with it, can become to produce to place on sale a structure and form of dragon. owing to protects the traditional brand effect that settle the municipal history culture a city and create the country of taipei first boys school the excellent traveling the opportunity that city bring, that market sets up the empress not only can satisfy to baoding city the domestic demand in municipal, but also will still radiates city three municipals and perimeter region, become the perimeter region consumption center and commercial center

    保定市北市區人民政府選定在市交警支隊以南，京廣鐵路以西，環西北延以東的地段，建設一個高檔的花鳥魚蟲市場。該市場佔地27畝，地處市繁華地帶，距原花鳥魚蟲市場不足一公里，交通便利，有六條公交路線直達此處，出口處公路直通107國道和京廣高速公路，近兩年來，該地帶方圓兩公里范圍內相繼建起了一些中高檔住宅小區，生活著上萬戶高收入家庭，擬見中的保定市北市區農業觀光園項目其中有花草種植，飼養魚蟲等專業園與之相呼應，可形成產供銷一條的格局。鑒于保定市歷史文化名城的傳統品牌效應及創建中國優秀旅遊城市帶來的機遇，該市場建成后不但可以滿足保定市人民的需要，而且還將輻射京津石三市及周邊地區，成為周邊地區消費中心與集散地。
  3. While carrying out the scheme, at first, the basic theory of antenna, array antenna and electromagnetic absorption, the performance parameter of antenna and parabolic antenna are deeply researched. in conformity, the characteristic and calculation of aperture field and near - to - far - field transformation for radiation pattern are detailed analyzed. second, the factors such as, the amount of the antenna elements, mutual coupling between each element, ground and the buildings on earth ' s surface, which affect the performance of array antennas ’ resultant field are stressed discussed

    在系統實現過程中，課題首先從天線、陣列天線，以及電磁場計算方法的基本理論著手，分析了天線與拋物面天線的各項性能參數，以及天線的口面場和近-遠區輻射場的特點和計算;進而，更加深入的討論和研究影響天線陣列合成場強的各項因素，包括系統所使用的天線單元個數對陣列合成場的影響、天線單元之間由於互耦造成的影響、傳播過程中地面和/或地面建築物的影響等。
  4. This method utilizes near - field data to determined an equivalent magnetic current source over a fictitious surface which encompass the em radiation source. this magnetic current, once determined, can be used to ascertain the near and the far field

    將近場的測量數據用來確定一個等效磁流源，該等效磁流源位於包含電磁源輻射口面的假設平面上，當確定了這個等效磁流源以後，利用它計算出輻射源的近區場和遠區場。
  5. In order to verify the simulation field, the ultrasonic wave field radiating by a planar transducer was measured by small ball. by comparing the simulation field with the measured field, it is found that mgb is accurate in the far - field and most near - field region

    為了驗證聲場模擬的可靠性，利用小球法測量了直探頭的水中輻射聲場，將試驗聲場和模擬聲場比較，發現多元高斯聲束模型在遠場區和大部分近場區都是有效的。
  6. The conformal microstrip antenna with some unique character has been applied in many fields, especialy on speedy objects. in this paper, an efficient fdtd algorithm is introduced to analyse the microstrip antenna. firstly, the fdtd formula in descartes coordinate system and in cylindrical coordinate system are obtained from the time _ dependent maxwell equations using the yee algorithm in a calculating region where the dielectric parameters are independent of time and space. the choice of the space discretization units and the time discretization interval are discussed which are decided by the accuracy and stability respectively. the shape and setup of the excitation source are discussed too. the excitation source is chosen to be gaussian pulse in shape. secondly, the mur ' s first - order and second - order boundary condition are deduced in cylindrical coordinate system. the methods of transforming radiation fields from near zone to far zone in the frequency domain and in the time domain are presented when fdtd is applied to analyse the characteristics of far zone. finally, three kinds of microstrip antennas are analysed. they are a slot antenna that lies on a plane ground of a microstrip, a slot antenna that lies on a cylindrical ground of a microstrip and a microstrip line _ fed aperture coupled stacked rectangular patch antenna in cylindrical coordinate system

    本文從麥克斯韋旋度方程出發，建立了笛卡兒坐標下無源空間中均勻無耗媒質的fdtd基本方程和圓柱坐標下無源空間中均勻無耗媒質的fdtd基本方程，詳細討論了fdtd法計算中時間步長和空間步長的選取原則以及激勵源的類型和設置；推導了mur一階和二階邊界條件在圓柱坐標下的差分格式；給出了在用fdtd法計算天線的遠場輻射特性時必需採用的頻域和時域近場遠場變換技術；最後用fdtd法計算了平面微帶縫隙天線、柱面共形微帶縫隙天線和柱面共形微帶層疊天線的輸入阻抗和遠區輻射場，並分析了天線的一些參數的變化對天線輸入阻抗的影響，得出了一些有用的結論。
  7. Radiating near - field region

    輻射近場區
  8. Days lion groups formed in 1995, early in 1998 into the international market, has now found a way consistent with their own development path of internationalization, business channels radiation in the world nearly 180 countries and regions in five continents over 90 countries and regions to establish a branch, with the united states, germany, malaysia, spain, egypt dozen foreign enterprises to establish a broad strategic partnership in the country registered a 34 - branch and 100 secondary provincial branch, consists of nearly 2, 000 home stores

    天獅集團組建於1995年， 1998年初挺進國際市場，目前已經摸索出了一條符合自身發展的國際化道路，業務渠道輻射世界近180個國家及地區，在五大洲的90多個國家和地區建立了分支機構，與美國、德國、馬來西亞、西班牙、埃及等十幾個境外企業建立了廣泛的戰略合作夥伴關系，在國內注冊了34家省級分公司和100家二級分公司，下設近2000家專賣店。
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