矢量的散度 的英文怎麼說

中文拼音 [shǐliángdesǎndù]
矢量的散度 英文
divergence of a vector
  • 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
  • 的 : 4次方是 The fourth power of 2 is direction
  • 散 : 散動詞1. （由聚集而分離） break up; disperse 2. （散布） distribute; disseminate; give out 3. （排除） dispel; let out
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  1. The divergence of a vector function is the scalar function.

    矢量函數的散度是一個標量函數。
  2. A monte carlo algorithm was presented to model the relation between the scattering phenomenon, depolarization changes and sea water depth, it is discovered that the radius of scattering point and the degree of depolarization increase with increasing of the sea water depth. at last, a optical engineering software ( lighttools ) is introduced to simulate optical scattering in the deep sea water, and studys the corelation between scattering and relative refractive index, particle density and particle size in the sea water. the experiment results show that the intensity of scattering will increase evidently with the increasing of particle size, particle density and relative refractive index. the methods and results in the article provide the basic theory and experiment validation for improving performance of communication, detection and imaging under sea water

    本文以球形粒子的mie散射理論、 stokes矢量法以及mueller矩陣來研究海水的散射特性和散射中的退偏振度變化;通過montecarlo方法模擬藍綠激光在海水傳輸過程中的散射現象以及散射中的退偏度變化與海水深度的關系，發現隨著海水深度的增加，散射后的光斑半徑、退偏振度將逐漸增大。最後通過光學工程軟體（ lighttools ）對海水中的散射進行模擬實驗，研究散射與海水中粒子密度、粒子大小和相對折射率的關系。實驗結果表明，隨著粒子半徑、粒子密度和相對折射率的增加，散射的強度將顯著增加。
  3. Q vector divergence field submit piece form district of convergence and divergence, have reflected meso - scale character. in the interface of convergence district and divergence district of q vector divergence, accompany severe convection precipitation and convection precipitation strengthen following convergence center strength, weaken following divergence center weaken

    在對流層低層q矢量散度輻合區和輻散區的交界處，伴隨有較大的對流性降水，對流性降水的強度隨輻合中心強度的增強而增強，隨輻合中心強度的減弱而減弱。
  4. 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。
  5. Double arrow : the archer draws and fires two arrows simultaneously in a horizontal spread. note that this is slower and less powerful than an equivalent single arrow shot

    雙發箭：弓箭手可以同時取出兩只箭矢並在水平方向上分散發射出去。注意這些箭矢在速度和力量上都不如同級別的單發箭。
  6. Triple arrow : the archer draws and fires three arrows simultaneously in a horizontal spread. note that this is slower and less powerful than an equivalent double arrow shot

    三發箭：弓箭手可以同時取出三隻箭矢並在水平方向上分散發射出去。注意這些箭矢在速度和力量上都不如同級別的雙發箭。
  7. It can be seen from dtc space vectors whose flux linkages are discrete in space that the dtc method is also a discrete control approach for motor drives, which is consistent with ac step motion control in control ideology. but in dtc control, fast torque response and speed performance are the final objective, which can not achieve position control of synchronous motors

    從直接轉矩控制中的空間電壓矢量的概念可知，它也是一種電機的離散控制策略，磁鏈在空間是離散化的，和交流步進理論的控制思想是一致的，但是它最終是為了較快的轉矩響應和速度調節特性，無法完成同步電動機的位置控制。
  8. Several surface fitting methods are d iscussed. the parametrization of scattered data, the selection of knot vector, th e control of precision and the stability of the methods are analyzed, and the algorithm for b - spline surface fitting to scattered data in specified tolerance i s given

    2 ）研究了對散亂數據進行b樣條曲面擬合的問題，討論了數種常用的曲面擬合方法，分析了散亂數據的參數化、節點矢量的選取、精度控制、數值穩定性等問題。
  9. In dtc system, the concept of space vector is introduced to analyze and control the ac motor, the electromagnetic torque and flux are caculated and controlled in the stator reference frame, and the optimal pwm gating signas are generated to control the inverter according to the output of the bang - bang regulator. in this paper, the dtc system is designed based on dsp. a speed estimation method is derived detailedly and the sensorless speed close - loop control is conducted. in this system, there are some problems, such as flux drift and torque ripple. to resolve these problem, a modified flux caculation method and some measures such as speed lpf, torque slide filtering are adopted. the system performance is enhanced by these mersures

    直接轉矩控制採用空間矢量的概念來分析異步電機的數學模型和控制其各物理量，直接在定子坐標系中計算和控制轉矩和磁通，藉助于離散的兩點式調節（ bang - bang控制）產生pwm信號，直接對逆變器的開關狀態進行優化控制，以獲得轉矩的高動態性能。本文採用dsp設計了直接轉矩控制系統，詳細推導了速度估計方法，進行了無速度傳感器的速度閉環控制。
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