質心 的英文怎麼說

中文拼音 [zhíxīn]
質心 英文
barycenter
  • 質 : Ⅰ名詞1 （性質; 本質） nature; character; essence 2 （質量） quality 3 （物質） matter; substance;...
  1. Because it is impossible to adjust the air bearing absolutely balance, the difference between mass center and rotation center must lead to a notable gravity disturbance torque. in the process of identification, modeling and identification of gravity disturbance torque is considered, and an extended kalman filter is educed for identifying air bearing inertia matrix and gravity disturbance torque, and then the algorithm is validated

    由於氣浮臺平衡調試方法和手段的限制，實驗過程中氣浮臺質心與轉動中心有一定的位置偏差，必將導致較大的重力干擾力矩，在辨識演算法的推導過程中，重點考慮了重力干擾力矩的建模和參數辨識問題，推導了氣浮臺的轉動慣量和重力干擾力矩辨識的擴展卡爾曼濾波演算法，並對演算法進行了數學模擬和全物理模擬驗證。
  2. Since rhic has run at a center - of - mass energy snn = 130 gev, and star collaboration analysed antiproton to proton ratio in mid - rapidity region using the first batch of data

    去年， rhic上的star實驗組利用質心系能量130agev的an an對撞產生的首批數據，對中心快度區的反質子質子比進行了研究。
  3. A new standardization method is proposed to solve the problem of the distorted image recognition, which is that the image ' s centroid was gotten based on the pixels total value of the whole image, and then the largest apothem and the rotated angle were obtained by the distance of the centroid and the image brim, last the object and the reference image adjusted the entirely same images in the scale and the rotated angle according to the uniform standardization

    由此，提出了基於圖像質心和最長邊的歸一化圖像處理新演算法：根據圖像像素總值求取圖像質心，根據質心和圖像邊緣輪廓點之間的長度求出圖像的最長邊和旋轉角度，然後根據統一標準將目標圖像和參考圖像調整至同一長度和旋轉方向的完全相同的圖像。
  4. Then the dependences of the cross section on the center - of - mass energy of xcj and baryon are given in the work

    離解的截面，給出了截面對x 。和重子的質心系能量的依賴關系。
  5. This paper adopts an adaptive learning algorithm based on hierarchy clustering to update user profile, which continuously abstract the cancroids of one class of optimum information from the feedback flow of system, which effectively shield the learning process from plenty of feedback noises produced by distorted threshold and sparseness of initial information, which also can imitate artificial feedback approximately to perfect the intelligence of adaptive learning mechanism

    摘要本文採用一種基於層次聚類的自適應學習策略，從系統反饋的信息流中，動態提取一類最優信息的質心更新用戶模型，有效屏蔽了閾值失真和初始信息稀疏造成的大量反饋噪聲，並且能夠近似模仿人工反饋，完善自適應學習機制的智能性。
  6. Centroid position of focal spot of laser beam with aberration

    畸變光束的焦斑質心位置
  7. Correction of torpedo ' s centroid eccentricity with counterweight technology

    魚雷質心配重糾偏技術的實現
  8. 3. characteristic points are established through projecting images of regular points to measured surface. space dimidiate coding method which is called rough match and correlation technology, centroid technology, corner detect technology which are called precise match are used to acquire characteristic points accurately

    將空間規則點圖案投射到被測物體表面形成特徵點，然後利用空間二分編碼粗略獲得空間特徵點（稱為粗匹配） ，再利用自相關技術、質心技術和角點技術精確獲得空間特徵點的圖像坐標（稱謂細匹配） 。
  9. Its own elliptic motion around it will be almost imperceptible.

    它繞著質心的橢園運動就幾乎看不出來。
  10. Enhancing training high quality military psywar talent

    加強高素質心理戰軍事人才的培養
  11. To avoid ambiguity, newton's first and second laws for systems should be restated in terms of the center of mass.

    為了避免意義含糊，牛頓第一定律和第二定律用於系統時，應根據質心的觀點加以重述。
  12. Management data, boston, usa, 1984, pp. 47 - 54. 3 beckmann n, kriegel h - p, schneider r, seeger b. the r - tree : an efficient and robust access method for points and rectangles. in proc

    對cdt索引來說，首先高維數據點通過k平均聚類演算法得到若干類，然後分別計算該點對應的始點與質心距離，並且將這兩個距離通過線性組合得到該點的復合索引鍵值。
  13. By means of the analysis on motion equation of simple pendulum, a method for testing the moment of inertia of a complex shaped rigid - body moving around a fixed axle under the condition of not knowing the barycentric position of the object was obtained

    摘要通過對單擺運動方程的分析，得到了未知物體質心位置條件下測試復雜形狀剛體繞定軸轉動慣量的方法。
  14. When liquid crystal ( lc ) is in smectic - a ( sa ) phase, its molecules disperse in layers ( sandwich ) and the molecular long axis tropism is in some order and the director is perpendicular to the layers

    液晶近晶a相，分子質心按層狀分佈（有層狀結構） ，分子長軸取向有序，指向矢垂直於層面。用三個序參量， ，描述。
  15. Considering that r limit to a small area we adopt lattice model. in the model, cell center form space lattice. quantum state of center of mass of molecule is corresponding to the particle in potential trap. secondly, hamiltonian operator is taken into account

    再考慮到r |局限在空間一個小區域內，可採用格胞模型，格胞中心構成空間點陣，分子質心r |的量子態相當于諧振子勢阱中的質點。
  16. Two kinds of interpolation algorithms are analyzed and concluded that the centroiding algorithm is better for star spot position estimation. the noise effects on the centroding are analyzed by numeric simulation, educes the noise rms model

    利用誤差統計理論，採用數值模擬的方法，分析了各種噪聲對矩心法質心計算精度的影響，推導整理了噪聲誤差模型。
  17. For example, an elephant ' s four tree trunk - like legs keep its center of mass over its feet, while t. rex would have had to balance its mass differently over its two small legs, bending them to keep from toppling over

    比如，大象的樹干般的四條腿能讓它的質心保持在腿上，而暴龍必須通過將讓它們彎曲以避免摔倒，而用不同地方式在兩條腿上保持平衡。
  18. Analysis for the key technique in ultrashort baseline sonar localization underwater

    質心和偏心距的新方法研究
  19. This dissertation studies the problem of dynamics modeling, dynamical response, and distribution of moving mass for a re - entry vehicle ( mmcrv ) under the background of national natural science fund project “ precision control and guidance for moving mass control of a re - entry vehicle based on the virtual displacement concept ”

    本論文以國家自然科學基金項目「基於虛位移概念的變質心再入飛行器精確制導問題研究」為背景，研究基於變質心控制的再入體動力學建模、動力學響應和落點分佈等問題。
  20. Barycentric dynamical time

    質心力學時
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