束成形 的英文怎麼說
中文拼音 [shùchéngxíng]
束成形
英文
beam shaping-
Optimum beamforming algorithm for pre - fft ofdm adaptive antenna array
自適應天線陣的最佳波束成形演算法Intrafascicular cambium ( fascicular cambium ) the part of the vascular cambium within the vascular between the xylem and phloem
束中形成層：是位於木質部和韌皮部構成的維管束內的一部分維管形成層。The vascular cambium extends to form a complete ring of meristematic tissue around the stem, the separate vascular bundles being linked by interfascicular cambium
維管形成層向兩側延伸直至形成一個莖內的分生組織環，各個維管束被束間形成層聯系在一起。Among the many remarkable final projects that have been proposed and presented at the end of the course have been a renaissance hourglass blown in the mit glass shop and set into a frame turned on our set shop lathe ; a four harness loom built by a student who then wove cloth on it ; a number of chain mail tunics and coifs ; a wide variety of costume and furniture pieces and electrified period lighting fixtures
在以往的課程中，學生們構想並於期末展示出了很多優秀的作品，比如一個文藝復興時期的沙漏，它是學生在麻省理工學院的玻璃工作坊吹制、並在我們布景工作坊的車床上成形的；一臺由學生製作的四綜紡織機，製作者真正用它來織布；許多鎖子甲束腰外衣和頭巾；各式各樣的服飾、傢俱和電氣化時代的照明設備。To select a cylindrical plane cathode ; to design proper focus electrodes in order to control the formation of beam in methods of solving equations, electrobath and simulation aided by computer. to correct effects of anode hole and work out curves of designing guns ; to discuss plasma cathode guns at last
選用圓形平面陰極;設計恰當的聚束極形狀以控制電子束的成形，並使用解析法、電解槽法和數值方法三種方法進行設計;考慮陽孔效應對電子束傳輸的影響，修正陽孔效應，給出電子槍設計曲線;最後討論一下等離子體陰極電子槍。Electromagnetic constrained forming technology and the formation mechanism of its product : equiaxed grain structure
電磁約束成型技術及所制備材料等軸晶組織的形成機制In this paper we also designed the computer optical elements based on the scalar quantity diffractive theory, which can change the laser beam into a square frame. we mainly refered to the one of those improved algorithms of gerchberg - saxton ( gs ). with the computer simulation and drawing program, the simulated diffraction patterns were gotten in this paper, the results agreed with the anticipated diffraction patterns ; in the paper we also design the computer optical elements that can shape the laser beam into a double circle shape, a lamp shape and so on
計算機模擬成像結果與預期得到的衍射圖樣相符合;文中還討論了設計參數對成像質量的影響規律。同時，本文還用標量理論設計了把高斯光束整形為雙圓斑形光束的計算機光學元件，文中主要是參考改進的gs （ gerchberg - saxton ）演算法;通過計算機模擬，得到了計算機光學元件表面的相位浮雕圖。The numerical algorithm of solving the adjoint equations for different design cases have been developed by using finite volume methodology which is usually used to solve the flow governed equation. it includes the some important aspects, such as flux formulation, wall and far - field boundary treatment methodology, dissipative term formulation, etc. after the solution of the adjoint equations is obtained, the derivatives of the cost function with respect to all the design variables can be evaluated with the same operation. this can yields a significant saving over the other gradient - based techniques when there are many design variables
（ 3 ）進行了應用控制理論和三維歐拉方程的機翼氣動反設計研究，以及有升力約束情形下機翼跨音速減阻問題研究，分別推導了相應的共軛方程及邊界條件數學表達形式，研究與發展了三維共軛方程的有限體積數值求解方法，及相應梯度公式的數值求解方法，通過對計算網格生成、流場計算、共軛方程數值求解、梯度求解和優化演算法等多方面的有效結合，成功發展了三維機翼的氣動反設計和跨音速減阻優化設計程序，成功地進行了多個設計算例研究。The main results show that : ( 1 ) the mechanism of laser bending is very different from that in bending with hard tools. ( 2 ) the bending angle is varied along scanning direction, and there is a deformation wave in the process. ( 3 ) the effects of sheet length on bending can be neglected while the length is more than 10 times of thickness. ( 4 ) the sheet width has much higher influence on the bending process
分析發現：激光彎曲成形時板料的應力狀態與機械折彎時有根本不同；當激光束沿直線單向掃描時，板料兩端的彎曲角度不同；板料的長度大於10倍板厚或5倍光斑尺寸時，板長對彎曲角度的影響不再顯著；沿掃描方向，距離光斑中心3倍光斑尺寸以外的區域，仍然對彎曲變形量產生影響。In him can be found a typical personality of aloofness from the world and arrogant reserve, which forms a striking contrast with genial, cultured and elegant confucian character, honest, sincere and thrifty
他批判了禮樂仁義對人性的束縛，形成了一種遺世獨立、清高孤傲的性格典型，與儒家溫文爾雅、敦厚中庸的性格風范形成了鮮明的對比。Family, especially nuclear family takes a basic function that provides an efficient intergeneration learning, which makes “ grandson ’ s restrain ” possible. hence, even an ego would trust in intergeneration
家庭尤其是核心家庭的主要功能之一是形成了有效的代際學習機制，使得隔代約束成為可能，並因此確保了在自利條件下，代際投資信用均衡的形成。The smart antenna, which is adapted in the wireless mobile communication system, in fact, forms an antenna with a high gain. thus communication in all directions can be proceeded, then base station antenna coverage, system capacity and service quality are improved, also inter - symbol interferes and multi - access interfere are reduced. the space division multiple access ( sdma ) is introduced, and users can be distinct from each other through their special location
在無線移動通信系統中採用智能天線技術，實際上是通過數字信號處理，使天線陣為每個用戶自適應地進行波束賦形，相當于為每個用戶形成了一個可跟蹤它的高增益天線，從而即可以進行全方位通信，也可以用較小的發射功率覆蓋相同的范圍以及提高系統容量和業務質量、降低用戶間的碼間干擾和多址干擾。A section of the earth ' s crust hundreds of kilometers long tore off its moorings, slamming into the seawater above
地殼掙脫束縛，形成綿延數百公里長的撕裂傷，進而使上覆的海水快速而猛烈地移動。In the forming processes of mpf press and multi - step mpf, the restraint condition and deformation path of sheet metal were changed, and the forming defects were subdued, then the forming limitation was improved and large deformation could be achieved
採用多點壓機及多道多點成形技術改變了約束方式及變形路逕，因而有效地抑制了成形缺陷的產生，提高板材的成形極限並實現了大變形量成形。In this thesis, we introduce the smart antennas and mainly examine the performance enhancements that can be achieved by employing sa in scdma wireless access system. in the part of introduction of smart antennas, we discuss the switched - beam arrays realizing by mending butler network at first. then we compare the different beam forming algorithms in sa
在對兩大類智能天線系統的介紹中，本文首先討論了一種以改進的butler網路實現波束賦形的多波束切換系統，推導了該天線陣的饋電模型並給出了模擬結果；然後，本文對智能天線波束形成演算法進行了比較，總結了不同演算法的優缺點，並給出具有代表性的演算法描述與模擬。Genetic algorithm assisted beamforming algorithm for circular antenna array
基於遺傳演算法的圓形天線陣波束成形演算法Simultanously, according to the principle of beamforming, the arithmetic method of beamforming based on delay filter is presented
同時，根據波束成形原理，提出了一種基於延時濾波器的波束成形演算法。The simulation results show that the throughput of proposed method converges to that of eigen - beamforming when the number of users in a cell is large
模擬結果表明，當小區內的用戶數足夠多時，所提出的方案獲得的系統吞吐量將收斂于在發射端使用特徵波束成形矩陣的吞吐量。Study on dual frequency electromagnetic confinement and shaping process for stainless steel
不銹鋼的雙頻電磁約束成形工藝參數優化Study on temperature field in dual - frequency electromagnetic shaping process
雙頻電磁約束成形過程的溫度場研究分享友人