矢面積 的英文怎麼說
中文拼音 [shǐmiànjī]
矢面積
英文
vector area-
The best scheme was chosen after analysis and comparing and the structure was designed. at same time, the kinematics analysis was conducted, coordinate transformation matrix using d - h method was set up, and the kinematics equation direct solution and inverse solution was deduced, the velocity jacobian matrix was constructed using vector product method, and the values of displacement and velocity of some special point including the wrist point were calculated. secondly, the working space of the robot was analyzed and the axes section of practical working space was drawn
首先，作者針對機器人的設計要求提出了多個方案，對其進行分析比較，選擇其中最優的方案進行了結構設計；同時進行了運動學分析，用d - h方法建立了坐標變換矩陣，推算了運動方程的正、逆解；用矢量積法推導了速度雅可比矩陣，並計算了包括腕點在內的一些點的位移和速度；然後藉助坐標變換矩陣進行工作空間分析，作出了實際工作空間的軸剖面。Considering the vectorial property of the time - average energy flow density, a new extensive definition of the light intensity has been proposed. it is expressed as the time average of the amount of energy which crosses in a unit time and a unit area, so it can be applied to measure quantity of the light intensity at any curved surface
對于非傍軸標量光場能量傳輸規律的描述則必須考慮其能流密度的矢量特性，應當採用光強的精確定義? ?單位時間單位面積上所流過能量的時間平均值來精確地描述某一橫截面上的能流，這也與光強的實際測量值是一致的。Firstly, based on conventional vq, a fast algorithm named equal - sum block - extending nearest neighbor search ( ebnns ) is presented, which not only can achieve the reconstructed image of full search algorithm but also can greatly reduce both the codeword search ratio and chip area. in order to improve coding efficiency, a new algorithm called correlation - inheritance coding is proposed, which is embedded in conventional vq system to improve compression ratio by re - encoding the indexes
首先，在普通矢量量化基礎上提出了等和值塊擴展最近鄰快速碼字搜索演算法（ ebnns ） ，該演算法在圖像畫質達到窮盡搜索演算法的前提下，大大降低了碼字搜索率和硬體實現面積；為了提高編碼效率，在相關性編碼方面，提出了相關繼承編碼演算法，對普通矢量量化后的編碼索引進行無損重編碼。With the study of boundary condition of vector potentials and the application of image method and sommerfeld integrals, this thesis deduces the vector potentials of vertical and horizontal dipoles near an interface ( both above and below the interface )
本文通過磁矢位邊界條件的研究，應用鏡象法和索末菲積分，推導出半空間界面附近（包括上、下半空間中）的垂直電偶極子和水平電偶極子的磁矢位。The main conclusions are following : ( 1 ) compared with the conventional mlc, the method of iterative prior probability based on the vector map can dispel the prior probability ’ s influence and the overall accuracy and kappa index can be improved ; ( 2 ) to the types with greater area than average area of all types, the producer ’ s accuracy will be improved while user ’ s accuracy be lessened, but to the ones with smaller area, the situation is just the opposite
本研究的主要結論是: （ 1 ）與傳統的最大似然法分類相比，利用地理數據矢量化得到的先驗概率進行迭代，可進一步消除先驗概率對最大似然分類法分類結果的影響，使分類總精度和kappa指數有進一步提高; （ 2 ）分佈面積大於平均值的類別，生產者精度一般會變高，使用者精度會變低;分佈面積小於平均值的類別，生產者精度一般會變低，使用者精度會變高。Cfd is also used to get the data of performance parameters of the nozzle at different nozzle pressure ratio, different nozzle area ratio and different geometric defected angle. the theory of function approximation is used to establish the transient model of thrust vectoring with the data calculated
本文通過cfd計算獲得矢量噴管的性能參數，如流量系數、推力系數以及有效推力矢量角等與矢量噴管壓比、面積比以及幾何偏轉角之間的關系數據，並利用函數逼近理論建立了矢量噴管的動態數學模型。The moment method is used to calculate the rcs of three - dimensional targets in this paper. these targets include conducting targets, dielectric targets and coat targets. triangular patches are used to model the surface of the target, then electric field integral equation ( efie ) and magnetic field integral equation ( mfie ) are built which satisfy the boundary conditions. the rwg vector base functions are used to denote equivalent electric current and magnetic current on the surface of the target. finally use the galerkin method ( rwg vector base functions are basis function and test function ) to transform integral equations into matrix equation. when obtain the equivalent electric current and magnetic current, we can calculate the scattering field and the rcs of the target
本文利用矩量法計算了三維導體目標、介質目標、塗層目標的雷達散射截面。首先採用三角形面元對物體表面幾何形狀進行模擬，然後建立滿足邊界條件的電場積分方程（ efie ）和磁場積分方程（ mfie ） ，將物體表面的等效電磁流用rwg矢量基函數表示，最後利用伽略金法（ rwg矢量基函數既作為基函數又作為檢驗函數）將電磁場積分方程轉化為矩陣方程求解未知電磁流系數，得到了表面的等效電磁流后，可以計算散射場和目標的雷達散射截面。More than 200 different condition 3d viscosity steady flow fields in the thrust vectoring nozzle at different nozzle pressure ratio and different nozzle area ratio and different geometric defected angle is calculated by the program developed. and the related performance parameters are acquired by numerical simulation
利用該程序計算了某矢量噴管在不同的壓比、面積比和幾何偏轉角下的200多種三維有粘流場，獲得了矢量噴管的性能數據。This magnetic resonance imaging ( mri ) scan of the pelvis in sagittal view demonstrates a large discreet leiomyoma of the upper posterior myometrium, seen just anterior to the rectosigmoid colon
Mri示盆腔矢狀面，於後上方子宮肌層可見一體積大，界限清楚的子宮肌瘤，後方緊鄰乙狀結腸。Such integra ting feature vector is used for building k dim e nsion gaussian m odel, whose param e ters are estim ated by an expectation - m a xi m i zation ( em ) algorithm, and then the resulting block - cluster m e mberships provide a segm entation of th e im age. after segm ented, a m e thod of param e ter - trimm e d average for describing re gion is proposed, of which the param e ter is decided by area and position of region dire ctly. the sim ilarity m easure between two im ages is defined by integrating properties of all regions in the im age
文中先將圖像分成4 4小塊，各塊的顏色、紋理、位置特徵構成8維的特徵空間；在該空間中對得到的8維特徵矢量建立一個k維高斯模型，應用期望最大em演算法估計模型參數，產生的塊特徵-聚類隸屬度函數實現對圖像的分割；為減小分割演算法不確定性對檢索效果的不良影響，對得到的區域採用參數均衡平均特徵表示，其中參數的確定直接與區域的面積、位置有關。Deep base - hole engineering is put number one among the new technologies practiced and used later by constructive department in 1998. features including amount of hard word, high - level technology, and more unpredictable factors note it. the safety and reliability on it not only affects the construction, but also have an impact on the surroundings. therefore, in order to defend the reliability, reasonability, and economy of the construction, we must thoroughly know about it, really put the theory togther with the practice of construction, purposely deal well with the series among design, construction, and inspection
深基坑工程具有工程量大、技術難度高、不可預見的因素多等特點，其安全可靠性不僅影響工程本身，而且往往會影響周邊環境。日前，基坑工程正向大深度、大面積方向發展，有的基坑長度和寬度均已超過100m 。因此，對深基坑工程應有一個系統的認識，要切實將理論與工程實踐相結合，有的放矢地處理好設計、施工及監測方面的各個環節的問題，實現信息化施工，以保證基坑工程的安全、質量和進度等各項目標的實現，將工程風險降至最低。And the affect of nozzle pressure ratio, nozzle area ratio and geometric defected angle on the performance parameters is also investigated. 4
研究了影響矢量噴管性能的因素，研究了壓比、面積比以及幾何偏角對矢量噴管性能的影響。Two cases are analyzedxonducting target with coat and dielectric target with coat. for the conducting target with coat, triangular patches are used to model the surfaces of the coat and the conducting object. now there have equivalent electric current and magnetic current on the surface of the coat, but only has equivalent electric current on the surface of the conducting object. the rwg vector base functions are used to denote equivalent electric currents and magnetic current. three integral equations should be built to obtain the unknown current coefficients ; for the dielectric object with coat, triangular patches are used to model the surfaces of the coat and the dielectric object. now there have equivalent electric current and magnetic current not only on the surface of the coat but also on the surface of the dielectric object. this time four integral equations should be built to obtain the unknown current coefficients
對于塗層導體目標，將塗層外表面和導體外表面進行三角形面元剖分，在塗層外表面有等效電磁流，導體外表面僅有等效電流（無等效磁流） 。將這些等效電磁流用rwg矢量基函數表示，需建立三個積分方程來求解未知的電磁流系數；對于塗層介質目標，將塗層外表面和內層介質外表面進行三角形面元剖分，在塗層外表面有等效電磁流，內層介質外表面也有等效電磁流，這時需建立四個積分方程來求解未知的電磁流系數。The technique is employed to analyze the electromagnetic scattering characteristics of anisotropic dielectric - filled apertures in grounded plane. the obtained results show that the proposed technique is accurate and efficient
本文應用矢量有限元?邊界積分法分析了無窮大接地平面上的各向異性介質填充縫隙的電磁散射特性，數值結果表明這種方法是有效的。First, the conducting targets ' electromagnetic scattering is researched in this paper. the rwg vector base functions are used to denote inductive current on the surface of the conducting target. efie is built. the rcs of conducting sphere. conducting plate, conducting cube are calculated respectively, the electromagnetic scattering of multi - rivets on the conducting plate are researched the first time, and the impaction of multi - rivets to the total rcs is analyzed
用rwg矢量基函數表示導體表面的感應電流，建立了導體表面的電場積分方程（ efie ） ，分別計算了導電球、導體平板、導電立方體的rcs ，首次研究了導電平板上有多個鉚釘的電磁散射，分析了多個鉚釘對目標總的rcs的影響。After the discussion of several kinds of optimum threshold segmentation methods, a multi - feature vector space and three new criteria ( global comparison detection, geography priority privilege, equal opportunity for competence ) are developed for region growing control, a new region growing method is brought forward. at last the region splitting and merging, region clustering, neural networks, snake active contour model et al have been discussed
提出了全局比較探測、面積測定及空間優先、競爭機會均等三個有效的準則，利用灰度、紋理多特徵矢量改進了傳統的區域增長演算法，並對紋理分析，神經網路分割和snake活動輪廓分割進行了有益的探索。Sound intensity describes the flow of acoustic energy produced by a sound source, and it is a vector
聲強是指單位時間內，聲波通過垂直於聲波傳播方向單位面積上的聲能量，它是個矢量。Based on the vector of point, the formula of moving envelope surface of the assembly part is given. according to determinant and vector theory, the method of working out the three - dimensional space arbitrary polyhedron volume is described
基於三維矢量理論和行列式理論，解決了計算三角面片的任意多面體體積及評估零件所需的實際裝配空間等問題。When the potential is interaction, because of the symmetry of the hamiltonian, the poincare surface of section ( pos ) of the orbits in the classical phase space is integrable, which is corresponding to the poisson distribution in the quantum manifestation, our compute accords with this distribution
當粒子間為占勢作用時，由於哈密頓的對稱性，系統對應的經典相空間軌道的龐加萊截面圖表現出可積的性質，這在量子上對應著能級統計分佈為無規譜的poisson分佈，我們通過基矢展開的方法求得的能級正符合這個分佈。分享友人