磁點陣 的英文怎麼說
中文拼音 [cídiǎnzhèn]
磁點陣
英文
magnetic lattice-
The change of lattice constants and the cell volume expansion are calculated, which make an important contribution to the increase of the magnetocrystalline anisotropy
計算了引起材料磁晶各向異性大大增加的點陣常數的變化和體積膨脹量。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。Due to restriction with the array aperture transition time, traditional phased array radar works under relative narrow signal bandwidth, so this restricts the application of phased array radar in the field where high performance is demanded. however, optically controlled phased array radar ( ocpar ) adopts the photoelectron technology, counteracts the aperture transition time via the method of optical true time delay ( ottd ), so it can realize wide instantaneous bandwidth and squint - free operation ; meanwhile, it can realize the miniaturization of phased array radar and has super anti - electromagnetism interference capability
而光控相控陣雷達採用光電子技術，通過光實時延遲的方法來抵消孔徑渡越時間，可以實現相控陣雷達的寬帶寬角掃描;同時也可以使得相控陣雷達小型化，並具有強的抗電磁干擾的能力;另外，由於光纖傳輸具有損耗低、頻帶寬等固有優點，採用光纖連接雷達天線和雷達控制中心，可以使兩者的距離較採用同軸電纜有較大的提高，更有利於保護雷達控制中心。Making use of the propagation property of the electromagnetic wave, the authors made a further discussion on the directional characteristics of the radiation electromagnetic waves from elements antenna, symmetric whip and antenna array, and analysed the effects of various factors on the directional characteristics
摘要利用電磁波的傳播特點，對元天線、對稱振子及其天線陣輻射電磁波的方向性做進一步的探討，並分析各因素對其輻射方向性的影響。Abstract : making use of the propagation property of the electomagnetic wave, the authors made a further discussion on the directional characteristics of the radiation elecromagnetic waves from elements antenna, symmetric whip and antenna array, and analysed the effects of various factors on the directional characteristics
文摘:利用電磁波的傳播特點，對元天線、對稱振子及其天線陣輻射電磁波的方向性做進一步的探討，並分析各因素對其輻射方向性的影響。The distribution of magnetic field in a permanent magnetic thin film array is investigated by analytical calculations in this thesis. theoretically, the effects of the size of array units and of the distance between them are calculated, especially the contribution of adjoining array units
本文利用磁場解析計算方法研究了永磁薄膜陣列的磁場分佈，理論上計算了薄膜陣列單元的尺寸和間距對永磁薄膜陣列工作點的影響規律，計算了周圍陣列單元對中心單元工作點的影響。In the design, we adopt the microsoft windows 2000 advance server operating system and the system design that combines the server cluster and the san. nlb technology is used to realize the load balance of all the nodes in the server, and the layout of streaming media data preserved on the disk arrays is realized by coarse - grained striping. windows media technology is introduced to help the application of streaming media
在此設計中採用了服務器集群與存儲區域網路（ san ）相結合的系統設計，採用microsoftwindows2000advanceserver操作系統，利用網路負載平衡技術（ nlb ）實現服務器集群內各節點的負載均衡，採用粗粒度數據條紋化對磁盤陣列上存儲的流媒體數據進行布局，並使用windowsmedia技術實現流媒體應用。The present paper has dealt with characteristics of the passive source electromagnetic array system as well as its tentative application in a copper ore district
摘要本文介紹被動源電磁陣列系統的特點及該系統在某銅礦區的應用試驗工作。A polarimetric sar combines both advantage of measuring full complex scattering matrix for each resolution cell in a scene and producing two - dimensional high resolution images, and is thus playing a more and more important role in gathering the detailed information regarding the geometric and electric structures of surfaces and covers for application in both civil and military areas
極化合成孔徑雷達（ sar ）具有可以測量場景中每個分辨單元的全極化散射矩陣以及產生二維高分辨力圖像的兩大優點，因此無論在民用和軍用的採集地表或地面覆蓋物的物理和電磁結構信息的應用中起著越來越重要的作用。Then the solving procedures of these bies by the rwg functions based moment method are elaborated, and the method of modeling complex objects built of arbitrary line, surface and volume structures is developed. in order to solve realize antenna and circuit problems, methods of adding excitations and concentrated loadings with moment method are deceloped, and matrix pencil ( mp ) method is used to deembeded the s prameters of antennas and circuits from the computed current distribution. some numerical results of practical complex antenna and scattering problems are presented to illustrate the veracity and effectiveness of the method
在第一部分中，首先從電磁場的基本理論出發，基於等效原理和邊界條件以統一的方法建立了用於分析金屬、介質及金屬與介質混合結構的邊界積分方程，並歸納和比較了各類積分的適用范圍和優缺點;在此基礎上，給出了使用基於rwg函數的矩量法求解各種邊界積分方程的一般過程;研究了具有任意線、面、體組成的復雜結構的電磁建模方法，並給出了各種多面連接情況下基函數和未知量的選取方法;研究了使用矩量法分析電路、天線問題時集總元件和激勵源的處理方法，並基於矩陣束方法（ matrixpencilmethod ）提取了電路和天線問題的s參數;最後通過分析一些工程中的復雜金屬天線問題和具有「金屬與介質混合結構」的散射和天線問題驗證了方法的準確性和高效性。The paper puts forward a combined - allocation - scheme based on the idea of constrained - block - allocation at the storing allocation strategy and gives disk - striping about the storing of big capacity disk array. in the study about the access path of the multi - media data, we introduce several kinds of representative multi - dimensions data index structure including k - d tree, r tree, vp tree and so on. ( 3 ) the research of multi - media database system architecture.
在存儲分配策略上根據受限塊分配（ constrainedblock ? allocation ）的思想，本文提出了聯合分配模式（ combinedallocationscheme ） ；並針對大容量磁盤陣列的存儲給出了條形分配方案（ diskstriping ） ；在多媒體數據的存取路徑的探討中，重點介紹了幾種有代表性的多維數據索引結構，有k - d樹、 r *樹、 vp樹等。The sensor array that based on the optical measurement has the advantages of high sensitive, small size, low power and immunity to electro - magnetic interference
這種基於光學強度調制測量法的傳感器陣列具有精度高、抗電磁干擾、尺寸小、耗能低等優點。The second part of the work is to analyze the finite array with floquet mode method. the scattering field of two - dimension array is computed and the characteristic of fm is mentioned. at the end of the work, the two methods, fm and mom, are discussed respectively
第二部分工作研究有限陣列電磁散射特性分析的fm方法，總結了fm方法分析陣列散射場的一般步驟，採用fm方法計算了二維有限陣列的散射場，與矩量法做比較，分析了fm方法的優缺點以及數值計算中的一些注意事項。Most of san systems use hardware redundancy, raid and hot backup technology to improve the dependability of storage data, which is characterized by great capacity, expandability and so forth and can suffice the data storage for enterprises, so it is widely adopted in banks, idc, isp and so on
存儲區域網（ san ）的硬體包括存儲設備、網路設備和各種server組成。一般使用硬體冗餘， raid以及熱備份等技術提高存儲數據的安全性。它以磁盤陣列為存儲介質，具有高容量、可擴展等特點。Combined with the advantages of matrix converter, ac - excited generation technique and vector control scheme, the stator flux - oriented vector control model of the variable - speed constant - frequency ( vs cf ) ac - excited generator fed by a matrix converter was developed. simulation studies of the proposed power generation system were carried out
本文還結合了矩陣式變換器、交流勵磁發電技術和矢量控制的優點，建立了矩陣式變換器供電的變速恆頻交流勵磁風力發電機定子磁場定向的矢量變換控制系統模型，對矩陣式變換器在交流勵磁發電系統中應用進行了模擬研究。分享友人