方向矢量 的英文怎麼說
中文拼音 [fāngxiàngshǐliáng]
方向矢量
英文
direction vector-
Based on the three new supposition and the tow new mechanical tools : moment vector and radius vector, the warping theory introduced the analytical method of the rotation of a cross section around a fixed axis, so as to make the space stability of the thin - walled member complanate and one - dimensioned
翹曲理論以三條新的假定和新建立的彎矩矢量和轉角向徑兩大力學工具為基礎，提出了繞定軸轉動的分析方法，使薄壁構件的空間變形平面化、一維化。Research about ctod and its components 8 ", " shows that the direction angle of ctod vector is identical with the fracture angle of void - mode fracture, which is obtained through experiments, and it is also identical with the result got by peak value line of stress triaxiality. besides, 8 i " was compare with vgc as criterion for initiation of void - mode fracture
對裂紋尖端張開位移ctod及其張開型分量~ 1和剪切型分量~ 11的分析表明，在試件發生韌窩型斷裂時，按照圓弧裂紋中ctod矢量的垂直方向預測的斷裂角與試驗測得的斷裂角符合較好，與三軸度脊線預計的結果也比較一致。If the wheel is rotating counterclockwise, its angular-momentum vector is directed eastward.
如果輪子是逆時針方向旋轉，其角動量矢量的方向朝東。The direction of the electric field vector is indicated in each picture.
每張照片上都標出了電場矢量的方向。A vector is defined by a direction as well as a magnitude.
一個矢量要用大小和方向來表示。It can give vector of stress, and break factor and direction vector of tensive crack and shearing crack in the special observation planes ( for examples, in a stratal surface which is fluctuant in depth )
軟體可視化包括：空間應力矢量（大小和方向） 、裂縫性態（張裂縫和剪裂縫發育程度及其方向矢量）在特定觀察面（如沿起伏的地層面）上的展示。Polarimetric synthetic aperture radar ( polsar ) investigates the transverse vectorial nature of plane em waves and provides the complex scattering matrix of a scatterer. scattering polarimetry is sensitive to the shape, orientation, and dielectric properties of scatters
極化合成孔徑雷達（ polsar ）研究電磁波的矢量特徵，通過測量和分析目標的極化散射特性，獲取目標的介電常數、物理特性、幾何形狀和取向等方面的大量信息。A mathematical model reflecting the tilt rotor unsteady and nonlinear aerodynamic characteristics in the longitudinal channel is presented in the paper. in the full flight envelope, the rotor thrust continues tilting and the aerodynamic forces of each component change as a function of airspeed and nacelle angle
在整個飛行包線內，旋翼的推力矢量方向不斷變化，飛機各部件的氣動力隨發動機短艙傾角和空速的變化而變化，因而飛機的飛行動力學有很強的非定常、非線性特性。According to the moving characteristics of tracklayer, when the vehicle is on ramp and the ground ' s vertical pressure is linear, the calculating formulas of relationship between the deviation of the instantaneous steering center, the position of vehicle ' s gravity, steering radius, moving velocity, moving acceleration, and vehicle ' s orientation, were obtained by the theory and method of vector analysis in mathematics and mechanics
摘要根據履帶式車輛的運動特點，運用數力學中矢量分析理論和方法，推導了接地比壓為線性分佈時履帶式車輛在斜坡上轉向時，瞬時轉向中心偏移量與車輛重心位置、轉向半徑、行進速度、加速度、車輛方位相互關系的計算公式。On the part of the design of nine - component thrust vector stand, an automatic hydraulic pressure original position calibration system, a scheme of original position calibration, and the great rigidity universal flexible combinatorial underprop are designed. by using the scheme of “ universal flexible combinatorial underprop plus software digital filter ”, the inherent frequency of test stand is improved, and the problem of test stand libration is solved. then, the resolving method of the disturbance between underprops of the moveable frame is proposed, and the disturbance revise equation is deduced
在推力矢量試車臺設計方面，設計了自動液壓原位校準系統、原位校準方案以及大剛度萬向柔性組合支撐;採用「萬向柔性組合支撐+軟體數字濾波」的方案，提高了試車臺動架的固有頻率，解決了試車臺動架的振動問題;提出了動架約束互擾問題的解決方法，推導了互擾修正方程;研究了九分力推力矢量測量誤差分析方法，並計算了推力矢量測量精度。A vector quantity is an entity with a magnitude and a direction in space.
矢量是空間中既具有大小又具有方向的量。A vector quantity is one whose direction as well as its magnitude is significant.
矢量是一個其方向和其大小同樣有意義的量。While two ( or more ) electromagnetic waves of the same frequency, same direction of vibration, same phase or constant phase difference superpose in space, the amplitude of composite wave is vector sum of the amplitude of each wave
由兩個（或兩個以上）頻率、振動方向相同、相位相同或相位差恆定的電磁波在空間疊加時，合成波振幅為各個波的振幅的矢量和。The main feature of aesa is to adaptive produce null in the pattern by weight control of elements in the array
通過陣元收發幅相的權矢量控制，以使波瓣在產生干擾的方向「置零」 。Qgis handles all three - raster, vector, and database - a state of affairs that took considerable effort for programmers writing gis data programming libraries
Qgis處理所有三種數據柵格數據、矢量數據和數據庫，這也是編寫gis數據編程庫的程序員的重要努力方向。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。This algorithm has higher efficient than the method which uses tool path envelope intersection with normal vector of surface of geometry model and has higher verification precise than the method that uses tool path envelope intersection with z direction vectors
其運行效率高於用幾何模型法向量與刀具掃掠體求交的方法，驗證精度大於用z坐標方向矢量與刀具掃掠體求交的演算法。There are several control methods can be selected in this series transducer. we selected the vector control method without speed sensor. the mount and maintain were easy and the precision is high
該系列變頻器有多種控制方式可以選擇，我們選擇了無測速傳感器磁鏈定向矢量控制技術，使得系統安裝簡單，控制精度高。Based on the mathematical model of induction motor, this paper discusses the rotor - field - orientated control principium and the space vector pulse width modulation principle. subsequently the software design of svpwm is put forward
本文在分析感應電機數學模型的基礎上，詳細討論了轉子磁場定向矢量控制理論和空間矢量脈寬調制技術原理，提出了svpwm的軟體實現方法。Analysis of the mathematics model of the field oriented vector - control system, design of the closed - loop pi controller of speed, torque and flux ; studies on the control principle and algorithm of svpwm, and analysis of the two control methods of svpwm. 2
深入研究了轉子磁場定向矢量控制系統的數學模型，設計了轉速、磁通及轉矩的閉環調節器：對svpwm的工作原理和控制演算法進行了研究，並分析比較了它的兩種控制方式。分享友人