流矢 的英文怎麼說

中文拼音 [liúshǐ]
流矢 英文
flying or stray arrow
  • 流 : Ⅰ動1 （液體移動; 流動） flow 2 （移動不定） drift; move; wander 3 （流傳; 傳播） spread 4 （向壞...
  • 矢 : Ⅰ名詞1. （箭） arrow 2. （尿） excrement; dung; feces 3. （姓氏） a surname Ⅱ動詞（發誓） vow; swear
  1. Deere k a. computational investigation of the aerodynamic effects on fluidic thrust vectoring. aiaa 2000 - 3598

    喬渭陽，蔡元虎.基於次流噴射控制推力矢量噴管的實驗及數值研究.航空動力學報， 2001 ， 16 （ 3 ）
  2. In this paper a kind of cardio - cerebral arterial bifurcation vessel hemodynamic characteristics are studied with the boundary element method, and the blood flowing velocity vector distributions have been calculated. in addition, the flow field distribution and the pressure on the particle surface are also calculated, when there is flow - round particle at the place of bifurcation, the move tendency of the particle is judged, the possible reasons of causing the atherosclerosis, thrombus, angioma are analysed

    本文用邊界元方法研究了一類典型心腦動脈分支血管中血液流動的流體動力特性，計算了分支血管血液流動的速度矢量分佈，同時計算了分支附近有多個顆粒狀繞流物時血液的流場分佈，及顆粒物所受壓力狀況，給出了顆粒物的運動趨勢，分析了引起粥樣斑塊病變、血瘤、血栓的可能原因
  3. Dotted arrows represent flow of information.

    虛矢線表示信息流程。
  4. Firstly, in spherical coordinate system, the sovp formulation for the time - harmonic electromagnetic fields of the current dipole in conductive infinite - space is derived, using reciprocity theorem and transforming relations between special functions. then, selecting appropriate coordinate system, using superposition principle, the boundary - value problem of modified magnetic vector potential on the problem of a time - harmonic current dipole in spherical conductor is solved and analytical solution is obtained. finally, by means of the addition formulas of legendre polynomial and spherical harmonics function of degree n and order 1, the analytical solution in spherical coordinate system specially located is transformed into that in spherical coordinate system arbitrarily located

    首先利用特殊函數間的轉化關系和互易定理推導得到了無限大導體空間中球坐標下時諧電流元電磁場的二階矢量位形式：然後利用疊加原理，選擇合適坐標系，求解了導體球中時諧電流元的修正磁矢量位邊值問題，得到了問題的解析解；最後依據不同坐標系下電磁場解的轉化原理，藉助勒讓德多項式和n次1階球諧函數的加法公式，將坐標系特殊安放時的電磁場解析解變換到坐標系一般安放時的解析解，給出了球內電場和球外磁場的並矢格林函數。
  5. Rapidly over the flow vector time limit for the same two licenses rid looking out

    在迅速流矢的時間里把2張相同的牌翻找出來清除掉
  6. Investigation on low - speed vector control of adjacent synthetic jet actuators

    相鄰合成射流激勵器低速射流矢量控制研究
  7. Tidal stream arrows

    潮流矢符
  8. Space vector control according as ac induction motor two - axis theory speed separates the stator current into two components. one is the torque component ; the other is the flux component. a structure similar a dc machine structure where torque and field can be controlled independently is given

    矢量變換控制是以交流電動機的雙軸理論為依據，在同步旋轉坐標系中把定子電流矢量分解為兩個分量：一個分量與轉子磁鏈矢量重合，稱為勵磁電流分量；另一個分量與轉子磁鏈矢量垂直，稱為轉矩電流分量。
  9. This strategy has many advantages : solving the problems that the system is unsteady under super - synchronization ; improving power factor of stator ( it is unity relative to that of rotor ) ; no rotor position sensor and no initial position measurement, easily building up doubly fed speed adjustment system with speed sensorless because adjusting speed is taken in the rotor coordinate and rotor current vector fixing is implemented

    該方案由於引入了定子電流勵磁分量的閉環控制，使系統同時具有轉速和勵磁調節兩個調節通道，具有如下優點：一、解決了超同步工作工況不穩定的問題；二、提高了定子側的功率因數（與轉子側功率因數為1相比） 。三、由於速度調節在轉子坐標系下進行，並以轉子電流矢量定向，所以無須轉子位置傳感器，也不用檢測初始位置，易於組成無速度傳感器雙饋調速系統。
  10. Furthermore, vector control methods to pmsm are studied with the result that the current vector decouple is actually an approximate static linear decouple control, viz. an incomplete decouple. 3

    研究了pmsm的矢量控制方法，通過分析得出電流矢量解耦實際上一種近似的線性化的靜態解耦控制，是一種不完全解耦。
  11. According to the relationship of the angle of the maximum torque and the q axis, the reluctance torque for salient pmsm is made full use of and the sator current amplitude is reduced by a large percentage, so that the system robustness is greatly increased. at the speed loop, this paper presents a single value model algorithmic control strategy which is the simplied form of normal model algorithmic control and has less computation work than the latter, so the real - time performance is very good

    對于嵌入式pmsm ，根據在電流幅值一定的條件下最大輸出轉矩與（為等效電流矢量和q軸之間的相位角）之間的關系，將磁阻轉矩轉換為輸出轉矩從而提高了輸出轉矩，改善了系統的控制性能；在速度環採用單步模型演算法控制，其計算量比較少，提高了系統的實時性和魯棒性。
  12. In the second one, the input current displacement angle is dynamically modulated as a function of positive and negative sequence components of the input voltages. in both cases, the harmonic content has been evaluated analytically

    第二種方法中，輸入電流矢量根據輸入電壓正、負序成分進行動態調制，並對兩種情況下的輸入電流的諧波成分都進行了分析。
  13. The initial position can he measured accurately through controlling a given position current vector of motor stator

    提出了一種電機初始位置的確定方法，通過輸出給定位置的定子電流矢量的方法，可以精確檢測出電機初始位置。
  14. The pwm subdivision driving based on single - chip processing unit control using electric current vector even rotation with uniform amplitude method is presented, after analyzing two methods of subdivision driving : equal electric current and electric current vector even rotation with uniform amplitude, realizing 32 subdivision driving of stepper motor

    分析了兩種細分驅動方法：等電流法和電流矢量法恆幅均勻旋轉法，提出了基於單片機控制的pwm電流矢量恆幅均勻旋轉的細分驅動技術，實現了步進電機32細分驅動。
  15. The first one is based on keeping the input current vector in phase with the input voltage vector

    第一種方法基於使輸入電流矢量與輸入電壓矢量保持固定偏置角。
  16. The duty expressions of mc have been derived by the method of separate modulation and then combination of input current vector and output voltage vector

    採用對矩陣變換器的輸入電流矢量和輸出電壓矢量分別調制然後組合的方法得到矩陣變換器的占空比表達式。
  17. After simulating the reverse recovery characteristics, the forward and backward i - v characteristics, carries distribution and current vectors et al by medici, the optimal design to some key parameters is proposed

    同時對器件反向恢復特性、正反向-特性及載流子分佈、電流矢量等物理量進行了模擬和詳細的機理分析。
  18. The varying properties for local nodal voltage and current are analyed theoretically. the method of using local nodal voltage and current change to estimate equivalent impadence

    提出了用局部電壓、電流矢量變化估計電網側等值阻抗模的方法和對用於估計的電壓、電流矢量變化數據的篩選。
  19. So by analyzing the stability of voltage vector and the changeability of current vector, we proposed to construct sinusoidal sequences with the same and delaying ninety - degree phase angles to voltage vector, then to multiply with the current vector respectively to bring about active and reactive power

    本文分析了單相系統電壓矢量的穩定性以及電流矢量的多變性特點，提出了對電壓矢量採用構造與之同相位和滯后90相位正弦序列的辦法，並分別與電流矢量相乘從而導出其有功和無功功率。
  20. The four units of unwind charge discharge and unwind adopts closed loop tensile control system which is composed floating roller and ac vector motors ( seven motor tensile control system )

    放卷、進料、出料、收卷採用擺動輥和交流矢量電機組成的閉環張力控制系統（ 7臺矢量變頻馬達） 。
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