矢量描述 的英文怎麼說
中文拼音 [shǐliángmiáoshù]
矢量描述
英文
vector description-
In short, vector data take the simplest topological entities - points, lines, and polygons - and anchor them within a 2 - d cartesian coordinate system to describe geographical features
簡言之，矢量數據利用最簡單的拓撲實體點、線和多邊形，並在二維笛卡爾坐標系統中固定它們來描述地理特徵。Using matlab and its add - ons simulink, through establishing simulation maths model, the paper integrates open chain vector equation ( describing motion restriction ), numerical value simulation ( computing velocity and displacement while given acceleration ) and matrix algebra, etc. to accomplish dynamic simulation for the robot and verifies the results for kinematics of the robot using analysis method, and it establishes foundation for following study for the robot such as kinetics, control, etc
利用matlab及其附加軟體simulink ，通過建立模擬數學模型，綜合開環矢量方程（描述運動約束） 、數值模擬（在加速度已知時計算速度和位移） 、以及矩陣代數等來完成機器人動態模擬，對所研究的機器人運動學分析結果進行驗證，結果基本一致，為機器人的后續研究，如動力學，控制等奠定基礎。When liquid crystal ( lc ) is in smectic - a ( sa ) phase, its molecules disperse in layers ( sandwich ) and the molecular long axis tropism is in some order and the director is perpendicular to the layers
液晶近晶a相，分子質心按層狀分佈（有層狀結構） ，分子長軸取向有序，指向矢垂直於層面。用三個序參量， ，描述。The relativistic random phase approximation ( rrpa ) is a relativistic extension of the random phase approximation for studying microscopically nuclear dynamical excitations and giant resonances. the consistency of rrpa calculations requires two aspects : first, it demands that the relativistic mean - field wave " function of nucleus and the particle - hole residual interactions in the rrpa are calculated in a same effective lagrangian. second, the consistent treatment of rrpa within rmf approximation requires the configurations including not only the pairs formed from the occupied fermi states and unoccupied stat es but also the pairs formed from the dirac states and occupied fermi states
自洽的相對論無規位相近似理論的自洽性要求有兩方面的內容：第一，描述原子核的激發態性質和基態性質時必須從同一個有效的拉矢量出發；第二，相對論無規位相近似計算，不但要考慮正能的粒子-空穴組態的貢獻，而且還要考慮從fermi海核子態到dirac海負能核子態形成的對激發的貢獻。Firstly, e - hmm is used to parameterize face image, the output likelihood of the e - hmm is encoded to form the input vector and is sent to the ann. by taking advantage of the discriminative training of ann, the weak discrimination of the maximum likelihood criterion can be improved, and the recognition performance can be improved by means of the learning ability of ann
該混合識別網路用e - hmm的參數來描述人臉的整體性和局部細節性特徵，用e - hmm的輸出似然值序列組成ann的輸入矢量，利用ann的鑒別訓練能力來克服e - hmm的基於最大似然準則訓練演算法區分力較差的弱點，同時利用ann的學習能力來提高e hmm的識別性能。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。Maxwell ' s equations conserve certain properties ? the magnetic field intensity, the electric displacement field and the poynting vector that describes the electric flux of an electromagnetic field
麥克斯韋方程中有某些特性是恆定不變的磁場強度、電位移場以及描述電磁場電通量的坡印廷矢量。The whole correlation - inheritance coding circuit system is designed, simulated and verified in verilog hdl on the candence systems
採用了硬體描述語言verilog對整個相關繼承矢量量化圖像編碼電路系統在cadence系統上進行了西安理工大學碩士論文設計、模擬及時序驗證。The mutual coupling between elements is expressed in terms of the normalized impedance matrix of the uniform linear array, the concise expressions for the optimized weight of the lms algorithm and the signal - to - interference - plus - noise ratio are given. the effect of mutual coupling on the performance of the sinr is illustrated with two examples, a method for compensating the mutual coupling is present, the compensation effect of this method is verified by example
用譜分析法，把陣元問的互耦用陣列的歸一化阻抗矩陣來描述，推導了均勻線陣的最佳權矢量及信號干擾噪聲比的表達式，模擬計算了互耦對自適應天線陣列的信號干擾噪聲比的影響，給出了一種校正互耦的方法，數值模擬了校正的效果。Finally several beam models for the partially coherent beam are introduced, which include gsm beam, polychromatic vector gsm beam and partially polarized gaussian schell - model ( pgsm ) beam et al
闡述了描述部分相干光束的數學-物理模型，包括高斯-謝爾模型（ gsm ）光束、多色矢量高斯-謝爾模型光束和準單色矢量高斯-謝爾模型光束即準單色部分偏振高斯-謝爾模型（ pgsm ）光束。Meanwhile, advantages of the least calculation workload, the simple process, and the convenient for implementation are brought while switch states are described as space vectors in the - coordination system
利用-平面內的空間矢量描述開關組合狀態，使得誤差函數的計算工作量小、過程簡單，易於實現。The vq - based approach assumes a gaussian mixture distribution, which fits real - world image data reasonably well. after estimating this distribution through em method, this approach trains optimized vector quantizers to partition data space
該方法使用更適合真實圖像庫的高斯混合模型描述數據分佈，並訓練優化的矢量量化器劃分數據空間。The main contents of the study as follows : ( 1 ) an introduction to the space vector theory and its application on the modeling of pmsm is presented firstly, which shows the basic idea of pmsm dtc. a comparison of dtc in asynchronous machine and pmsm is made as well. in order to take the full advantage of the dtc, the pmsm has to be properly selected
本文的主要內容包括： （ 1 ）由空間矢量模型推導出永磁同步電機的磁鏈、電壓和轉矩的公式，描述了永磁同步電機轉矩直接控制的基本控制機理，分析了永磁同步電機與感應電機在轉矩直接控制方式上的不同之處以及轉矩直接控制對永磁同步電機的要求。In this article, introduce the important meanings of a - b effect, first is a have physics factors, second is wave function phase factor is connected with geometrical factor in ( b = 0, a 0 ), through a - b effect, we know : electromagnetic field vector e, b is local quantity, electromagnetic potential a, is global quantity, adding a, description and by the way of loop integral, electromagnetic field " effect is completely descripted
本文介紹了有重要歷史意義的a - b效應， a - b效應揭示了兩點物理觀念的變革：一是電磁矢勢有物理效應。二是在無場強但有磁矢勢（ b = 0 ， a 0 ）的區域，波函數的相位因子與其運動空間結構有關。 a - b效應顯示； e 、 b是局域量， a 、是總體量，只有加入a 、之後的描述，並通過a的環路積分，才能對電磁場的作用做出完全準確的描述。In fact, the traditional definition of the light intensity is only suitable to the paraxial - scalar diffraction light field, not to the non - paraxial scalar diffraction light field and vector diffraction light field
考慮到光場能流密度的矢量特性，這種方法具有很大的局限性，只適用於描述傍軸標量光場，而不適用於對非傍軸標量光場的描述。In the basis of present technology, we provide our method. with our method, we first extract several low visual feature of the image, such as color, texture etc, and then we fuze the feature into a high dimensional vector ; sencond, we analyze the vector with pca method, which reduce the dimension of the vector ; and last we use the vector to classify the image
該方法的基本思路描述如下：首先，提取圖像的多種視覺特徵（如：顏色、紋理等） ，經融合得到一個高維矢量描述；然後，對該高維矢量描述作pca （ principalcomponentsanalysis ）分析，以獲取其中的主元，降低維數；最後，以降維后的矢量描述為基礎，用於圖片的分類系統。By the similarity partition of network traffic usage space, the codebook of vq can describe the network traffic usage profile accurately and achieved the usage space index via the vq
通過相似性劃分用戶行為空間，矢量量化的碼書（ codebook ）能夠精確的描述用戶行為模式輪廓，實現了面向異常度量的網路業務量用戶行為空間索引。The input and output state vectors are defined, which are a 6 1 column vector including motion types, the magnitude and spatial orientation, respectively. the state matrices ( sms ) can be deduced by vectors operation, that is, the output state vectors multiplied by the input state vectors
其中，前者按照輸入輸出端的不同運動類型、速度矢量的大小及方向特徵，以6維矢量形式表示；而後者作為輸入、輸出特徵矢量之間的紐帶，描述了基本變換單元的功能與特徵。In this equation, r represents the position of the ball, with r0 being the initial position ; and v represents the velocity of the ball
為了發現球和球之間或者球與臺子邊框之間的碰撞，我用這條線的矢量方程來描述假定球在假定時間的位置。The coordinate system of turning polyhedron movement was selected and its vector model was established by way of analyzing the vector, and based on that, the vector expression of describing turning polyhedron movement was deduced, then the vector formula of the relative movement and the vector formula of the path of the lathe tool were built
摘要通過矢量分析，選擇了車削多面體運動的標架，建立了車削多面體運動的矢量模型，在此基礎上給出了描述車削多面體運動的矢量表達式，建立了相對運動的矢量公式和刀尖軌跡的矢量公式。分享友人