空間向量 的英文怎麼說
中文拼音 [kōngjiānxiàngliáng]
空間向量
英文
spatial vector-
The proportionality constant, h, is known as the hubble constant and quantifies how fast space is stretching ? not just around us but around any observer in the universe
其中的比例常數h ，就是所謂的哈伯常數，它可以把空間向外延伸的快慢予以量化，不只針對我們周遭，也適用於宇宙中所有觀測者的周圍。The matrices in cwmtx include vectors and square matrices, where vectors include space vectors and quaternions
Cwmtx中的矩陣包括向量和方陣，其中向量包括空間向量和四元數。During the adjustment of structure, the thesis dicusses the change the forestry, stock breeding, and aquaculture were supplanted by planting, the improvenent that foodstaff pushed aside the economec products in panting structure, the movenent of forestry industrial sructure through increasing forestation acreage and developing mixed farming, the inprovement of breed structure and increasement the quantityof the stock breeding in the structure adjustment, the advancement of proportion of breed aquatics and catching, developing the breeding and ocean aquaculture, promoting the storege and process in the adjustment of aquaculture
在林業內部產業結構調整過程中，主要是提高造林育林面積，發展林業多種經營。畜牧業在結構調整中主要是改善畜種結構，提高畜產品產量。水產業主要是調整養殖與捕撈比例關系，積極以展海淡水養殖業，拓展漁業生產的空間，向外海漁業發展，推動水產業儲藏及加工業的發展。Chapter 5 is the direct extension of chapter 2, namely it maps sq field to vq field
第五章是上一章介紹的tcq方法由標量空間向矢量空間的直接拓展。The spatial flux terms are discretized by using central difference scheme and the time integration is performed by using explicit scheme in the flow solver
流場求解時採用中心差分的有限體積方法對空間通量項進行離散，採用顯式推進方法進行時間方向的積分。In the control software, the object - oriented method is used for doing system analysis and study. furthermore, the message - driven mechanism is used in the control software research and design. the instantaneous zero vector inserting space vector pwm theory is adopted to control the permanent magnet synchronous machine as the driver motor in the control software
軟體採用面向對象的程序設計方法對系統進行分析與研究，將消息驅動機制應用於控制軟體的設計和開發之中，在控制軟體中採用瞬時零矢量插入磁鏈軌跡法（電壓空間矢量法）來控制永磁同步電機。This system makes a breakthrough of traditional incremental motion control theories. it breaks the strict ambit between continuum and discrete, speed and position, rotation and step, the space vectors of stator magnetic field and rotor magnetic field are selected as the main control objects, incremental motion control and motion control are combined organically to make incremental motion control develop to large capability, high efficiency, high precision
這其中的交流步進控制理論打破了傳統的增量運動控制思想，打破了連續與離散，速度與位置，旋轉和步進的嚴格界限，以定、轉子磁場空間矢量為主要控制目標，將增量控制與運動控制有機的結合起來，使增量控制向大容量、高效率、高精度方向發展。The main technical module of processing gis spatial information of land desertification is designed, which can carry out the spatial overlay of vector data in three periods, extract as well as process attributative information and transform the spatial vector data into visualizing data. the gis database of land desertification is established
本研究設計了土地沙漠化gis空間信息處理的主要技術模塊，即三期矢量數據的空間疊加、屬性的信息提取與處理、空間矢量數據向可視化數據庫的轉化，建立了土地沙漠化gis數據庫。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。This paper expatiated that the mathematics models of ac motor is higher order, non - linear and closed coupling, multivariable input - output system. and introduces the principle and the algorithm of sine pulse width modulation ( spwm ), opened - loop space voltage pulse width modulation control ( svpwm ) and field oriented control ( foc ). finally, realized the control strategies of variable - frequency speed regulating using assembly and c language
文中闡述了交流異步電機的數學模型是高階、非線性、強耦合的多變量輸入輸出系統，介紹了交流電機的正弦脈寬調制、開環電壓空間矢量的u / f控制和磁場定向控制的原理及控制演算法，並利用dsp構成控制系統，通過匯編語言和16位定點c語言混合編程的方法實現了上述的變頻調速控制策略。From basic equations of elastic mechanics, related knowledge of fracture mechanics and frequent used methods of differential and integral calculus, bending fracture models of anisotropic functionally graded materials is established by assuming that material constants ( stiffness matrix component ) are expressed in arbitrary functions
根據彈性力學的基本方程以及斷裂力學的有關理論及微積分方法，將材料常數（剛度系數）設為空間變量的任意函數，建立了各向異性功能梯度材料板彎曲斷裂模型，即三類偏微分方程邊值問題。Besides, the motor control system based on the digital signal processor ( dsp ) is analyzed. the hardware circuit about the dsp system is designed. the dsp control software is programmed on the field magnetic orientated control and the space vector pulse width modulation ( svpwm ), that establishes the ' basis for implementing the modern control principle
然後，又對基於數字信號處理器（ dsp ）的電機控制系統進行了分析，設計了dsp系統的硬體電路，並編寫和調試了空間磁場定向控制和空間矢量脈寬調制（ svpwm ）的dsp系統的軟體，為直線電機現代控制策略的具體實現奠定了基礎，並提出了對端部效應進行補償的控制方法。First, the error transfer characteristic among subsystems at different space locations is analyzed, and the direct transfer characteristic from discrete standard measure space to the workpiece measure space under measured in measure system is proven. second, the error reconstruction condition and method of mapping from discrete standard measurement system to continuous standard measure space are analyzed. based on the measurement sample stationarity in limited distance, the prediction model ' s limited astringency and mensurability to the dynamic measuring error and the prediction error respectively are proven
分析了不同空間位置子系統間的誤差傳遞特性，證明了在測量系統中離散標準量值空間向被測量工件量值空間的直接傳遞性；分析了離散標準量系統向連續量值空間映射的誤差重構條件和方法；基於測量樣本的有限距離的平穩性，證明了預報模型對動態測量誤差的有限收斂性和預報誤差的可測度性，進而證明了以離散標準量值系統對被測工件預報修正的可行性和合理性。Lsa is similar to vector space mode ( vsm ), representing textual materials with space vectors. lsa can advance the accuracy of subsequent processes by using a truncated singular value decomposition ( svd ) to remove the influences of synonymy
在技術上，它同向量空間模型類型類似，都是採用空間向量表示文本，但通過svd分解等處理，消除了同義詞、多義詞的影響，提高了后續處理的精度。This paper is devoted to seeking formulas and rules of representation for generating new fractal graphics. the main works are as followed : ( l ) construct new formulas for new fractal aspects after revisited methods for the visualisation of mandelbrot and julia sets based on ifs, we described the other new formulas originating from z z2 + c. including norton and polynomials iterated function, which have integer index instead quadratic index, we also constructed formulas with complex number index. 3 - d dynamical system is discussed then. besides the most widely used sequential visualisation methods, we designed two methods to change the original vectors and get new graphics with special effects
在對公式指數的推廣中，包括指數為整數的牛頓迭代法和多項式迭代法，還包括指數為復數的迭代公式；在離散動力系統的吸引子生成演算法討論中，將復數z向高維空間推廣，重點論述了生成了三維離散動力系統吸引子的收斂條件，實現了此吸引子對應的三維空間向量在平面上的投影圖的條件；還討論了迭代前對初值點進行兩種不同變換對得到的分形圖形的影響，以及這兩種變換組合圖形的生成。The sub - bands are coded and the information of direction cosine is used for iris matching, by means of which this method overcomes zoom, shift and illuminance and obtains approving effect
將分解后子帶作為特徵編碼，利用空間向量的方向夾角餘弦作為匹配方法，有效克服了縮放、平移、光照等影響，達到了較好的識別效果。Topological optimization analysis of three dimensional continuum structure with stress constraints
向量的空間向量來自於屋蓋風壓場的本徵正交分解The author takes nine provinces of yellow river drainage area as objects to perform the study and shows the result by gis and vector, which indicated the feasibility of the model
以黃河流域九省區為例進行了應用評價研究，並通過gis技術和空間向量將結果直觀的表現出來，結果表明了模型的可行性。The integrated method of time and frequency domain analysis and rbfnn is given for bearing fault diagnosis. through selecting representative parameters, feature space vector is constructed so the input dimension is reduced and fault classification information retained
通過時頻域分析提取了有代表性的特徵參數，構建了特徵空間向量，既降低了網路的輸入維數，提高了網路的學習效率，又保留了故障分類信息。According to the varied kinds of the retrieve models in the course of the design and our practical situation, we put forward a new information retrieve system combining the boolean logical model and the vector space retrieve model, which is named extended weighting vector space retrieve model
在系統的設計實現過程中，我們根據上文提到的不同檢索模型，結合我們的實際情況，提出了一種結合布爾邏輯模型和空間向量模型的新的檢索系統，即擴展的加權向量空間檢索模型。分享友人