要求矢量 的英文怎麼說

中文拼音 [yāoqiúshǐliáng]
要求矢量 英文
requirement vector
  • 要 : 要動詞1. （求） demand; ask2. （強迫; 威脅） force; coerceⅡ名詞（姓氏） a surname
  • 求 : Ⅰ動詞1 （請求; 要求） ask; beg; request; entreat; beseech : 求人幫忙 ask sb a favour; ask a favou...
  • 矢 : Ⅰ名詞1. （箭） arrow 2. （尿） excrement; dung; feces 3. （姓氏） a surname Ⅱ動詞（發誓） vow; swear
  • 量 : 量動1. （度量） measure 2. （估量） estimate; size up
  • 要求 : ask; demand; require; claim; requisition
  1. We presented a novel method of searching for similar fragments of 3d curves, with this method, a hash vector is associated with each fixed - length fragments of 3d sherd. each vector consists of low frequence component of fourier - like spectrum for the distance between profile curve and the centroid

    討論了基於hash矢量和fourier變換的輪廓曲線匹配方法，在匹配中不要求一段輪廓線與另外一段輪廓線完全匹配，而是把它們分成很多子段，再用這些子段來進行匹配。
  2. 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。
  3. The results show that binding energies per nucleon at each density and various asymmetry parameters fulfill the empirical parabolic law and the asymmetry energy is density dependent. it is found that both scalar and vector potentials of neutron in the neutron rich nuclear matter become stronger although the isospin dependence is not stronger. we compare our results with those in a simple method, where the dbhf nucleon self - energies are extracted from the momentum dependence of the single - particle energy

    首先我們要求在每一個密度及各種不對稱系數的核物質中，相對論平均場（ rmf ）計算出的核子標量與矢量自能與dbhf計算出的標量與矢量自能一致，從而得到在rmf下的密度依賴的有效介子核子耦合常數，包括同位旋標量介子。
  4. The carrier wave is modulated directly by the baseband signal at several frequency point in l band and s band. firstly, this paper clarifies the theory of i / q modulation, elaborates evm and acpl, and analyzes the effect of amplitude and phase unbalance and dc offset on evm. secondly we review the basic principle of phase locked loop and it ’ s composing parts, including the basic conception and design method of pll frequency synthesizer, especially introduce the charge pump pll frequency synthesizer in detail

    首先，在闡述i / q正交調制基本原理的基礎上，通過對誤差矢量和鄰近通道功率泄漏的詳細分析，定性、定量地討論了各種非理想電路因素（如相位不平衡、幅度不平衡、直流偏差等）對調制器性能的影響;其次，介紹了鎖相環的工作原理和基本組成部分，包括鎖相環的設計和環路濾波器的設計，特別詳述了電荷泵鎖相頻率源;第三，介紹了採用直接調制技術模擬衛星信號的射頻前端的設計;最後，對整個直接射頻調制系統進行測試，結果基本上達到了課題要求。
  5. The website is running on the intranet and it works well. this dissertation provides a new method to manage the parts " drawings, which is applicable to not only dryland machines " parts drawings but also all kinds of machines " parts drawings

    本研究為工程圖紙的電子化管理提出了一種新的方案，並利用了web技術實現了dwf格式電子圖紙數據庫存取和矢量圖形網上瀏覽，在降低用戶軟體要求的基礎上，實現圖紙的管理應用。
  6. 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。
  7. Using the vector potential, the expression for calculating inductance of air - cored solenoid coil is derived in the dissertation. and the calculating methods of function t in the calculating expression are given for the convenience of the calculation of inductance while the precision is not strictly requested

    利用矢量磁位a直接推導出了通電空心圓柱線圈電感的計算表達式，給出了求解計算式中函數t的計算方法，以方便精度要求不高時的電感計算。
  8. The secure threshold secret sharing scheme and the secure vector space secret sharing scheme proposed in the dissertation can meet this need

    本文提出的安全的門限秘密共享方案和安全矢量空間秘密共享方案能夠滿足這一要求。
  9. The method that how to adjust the consumption coefficients according to the final demand structure is researched ; in order to make the right positive characteristic vector of the new consumption coefficient matrix is just the final demand structure

    摘要研究了如何根據最終需求的結構來調整原有的消耗系數，使得調整后的消耗系數矩陣的右正特徵矢量是最終需求結構。
  10. Based on the semi - vector wave equation under cylindrical coordinate system, the mode distribution and complex propagation constant in bent waveguides were computed by a finite difference method with perfectly matched layer ( pml ) boundary condition

    摘要以柱坐標下的半矢量波動方程為基礎，採用基於完美匹配層（ pml ）邊界條件的有限差分方法，對彎曲波導進行模式求解，進而得到波導彎曲引起的輻射損耗。
  11. 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。
  12. Secondly, to achieve the independent regulation of active and reactive power output from the generator side which is designed for the purpose of tracing the maximum wind - energy capturing. the paper has analyzed the mathematic model of the ac excited doubly - fed machine and the stator field orientation control strategy of the motor as vscf wind power generator. thirdly, it has put forward and designed the dual pwm converter with the capacity of energy flowing bidirectional aimed at the demand of rotor energy bidirectional flow. the author constructed reliable and integrated experimental system and did a series of experimental study including no - load, cutting - in network and power generation at, below and above the synchronous speed

    論文首先分析了風機運行特性及其最佳風能利用原理，通過模擬及實驗驗證了採用直流電機的輸出特性模擬風力機的最大輸出功率曲線的可行性，並給出了模擬系統的硬體結構；然後為了實現交流勵磁發電機有功、無功功率獨立調節機理，分析了交流勵磁雙饋發電機的數學模型和在追蹤最大風能捕獲變速恆頻風力發電時必需的定子磁鏈定向矢量控制策略；針對雙饋發電機轉子能量雙向流動的要求，提出並設計了具有能量雙向流動能力的雙pwm交流勵磁用變頻器；最後為實現從理論到實踐的全面研究，研製出了一套小功率完整的雙pwm變頻器交流勵磁的雙饋風力發電機實驗系統，進行了空載、並網、同步速及上、下的發電運行等一系列的運行實驗；所完成的模擬和實驗研究均驗證了理論、模型和控制策略的正確性、可行性。
  13. It realized the spatial interpolation software grounded on geostatistics seamlesslly integrated with the system using the way of oop and the technology of ole / activex based on com. using vector - grid spatial - overlap analysis to solve the limitation of the grid and general vector data structure in the course of creating prescription, it made fertilizer prescription founded on the main factor of soil nutrient and yield - target. also it effectively integrated comgis with exper t system using the technique of loose coupling

    以面向對象的設計方法為基礎，利用「組件對象模型」基礎上ole / activex技術實現基於地統計學的空間插值軟體實現及與施肥處方系統的無縫集成；應用基於矢量網格的空間疊加分析方法解決柵格和常規矢量數據結構在處方生成中的局限，生成了基於土壤養分和目標產量為主要因素的施肥處方；利用鬆散耦合技術將comgis與施肥專家系統進行有效集成；充分考慮施肥機對施肥處方數據結構要求，在wgs - 84坐標系下採用具有柵格單元的矢量施肥處方。
  14. Since the filtering vector is needed in qrd - rls and qrd - brls, the parallelism of qr decomposing will be impeded slightly. the inverse qr decomposion ( iqrd ) scheme for brls algorithm is proposed in this dissertation to enhance the parallelism, the systolic array structure for iqrd is proposed to calculate the algorithm in parallel

    鑒于碼輔助最優濾波需要求解濾波權值矢量，此時qr分解的計算并行性不如逆正交三角分解（ iqrd ） ，本文提出了基於iqr分解的brls演算法，給出了iqrd - rls / brls的脈動陣列并行計算結構。
  15. We find that if the vacuum state | 0 > in their paper is replaced by any state vector their construction still works. we notice that if the state vector has some s

    我們注意到，在他的構造中，如果適當要求態矢量}價>的對稱性質，那麼構造的投影運算元就是不可對易orb而ld屍/ g投影運算元。
  16. By analying the requirement of traction characteristics of rectifier in ac drive reciprocal power - fed test system, in this paper, the research on high power supply quality rectifer is conducted around topology and mathematical modeling, high power supply quality rectifer ' s control methods are summarized. predicted current control based on space vector pwm in two - phase stationary coordinates is proposed and used in this paper

    本文分析了交流傳動互饋試驗系統牽引特性對整流電源的要求，對高供電品質整流電源的拓撲結構和數學模型進行了研究，總結了高品質整流電源的控制方法，闡述了本文採用的兩相靜止坐標系下基於空間矢量脈寬調制的預測電流控制方法。
  17. For the bldcm which has a neither sinusoidal nor trapezoidal back - emf, that is, for a general shape back - emf bldcm, this dissertation proposes a novel id = 0 vector control method. by this method, the iq for a constant torque to produce is calculated through coordinate transformation, and the reference iq is tracked by vector control in the dq0 frame

    對于實際反電動勢波形既非正弦又非梯形波的無刷直流電動機，提出一種新型的任意波形反電動勢無刷直流電動機的i _ d = 0矢量控制方法，通過坐標變換浙江大學博士學位佑文摘要求解產生恆定電磁轉矩所需的q軸電流，並在dqo坐標系下通過矢量控制對q軸參考電流進行跟蹤。
  18. Based on clear boundary condition of dam shoulders, with rigid limit equilibrium vector method, baihetan hydroelectric power station dam shoulders anti - sliding stability analyzing program is compiled. then, by using above program, the anti - sliding stability of dam shoulders in different modes and different load patterns are calculated in respectively, and their stability is evaluated. the analysis results indicate that the anti - sliding stability of baihetan dam shoulders can meet the need of arch dam design

    在查明壩肩抗力體邊界條件的基礎上，利用剛體極限平衡分析中的矢量法在文獻[ 1 ]基礎上編制了白鶴灘壩肩抗力體抗滑穩定性分析程序，並對白鶴灘壩肩抗力體的不同荷載情況下大塊體的穩定性進行了評價，結果表明：白鶴灘壩肩抗力體的穩定性總體上達到了拱壩設計的要求。
  19. Spatial data is the key of gis functionality and data ' s collection, integration, analysis and representation of gis open the full process of spatial data. it compares some kinds of spatial data model of gis and points that more gis adopt vector data model as the main data model with people ' s improving requests to contents that data represent. multi - source spatial data enrich the representing ability of gis, the modules of multi - source data integration are analyzed and data integrati on in oil and gal field is studied

    空間數據是gis功能的核心， gis的數據採集、集成、分析和表現展現了gis數據使用的全過程，比較gis的幾種空間數據模型，指出人們對數據所能表達的內容的要求增高，更多的地理信息系統採用矢量數據模型作為其主要數據模型；多源數據豐富了gis的表現能力，分析多源空間數據集成的模式，研究油氣田中的數據集成。
  20. This thesis in theory deals with electromagnetic wave scattering by multilayered confocal and non - confocal spheroidal particles illuminated by gaussian beams, in which the main contributions are as follows : 1. in the case of multilayered confocal spheroidal particles, the scattered fields as well as the fields within each layer are obtained in terms of infinite series with spheroidal vector wave functions by using an appropriate expansion of the incident gaussian beam. by virtue of the boundary conditions, we write the set of equations for determining the unknown expansion coefficients and then solve it

    本文從理論上研究了多層共焦和非共焦橢球粒子對高斯波束的散射，主要成果如下： 1 .我們研究了多層共焦橢球粒子對高斯波束的散射，把入射高斯光，散射場，各層橢球內的電場和磁場用適當的橢球矢量波函數展開，應用電磁場邊界條件，寫出確定各展開系數的方程組，求出散射場系數，進而求出散射場及散射截面。
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