餘弦圓 的英文怎麼說

中文拼音 [yúxiányuán]
餘弦圓 英文
cosine circle
  • 餘 : Ⅰ同「余」Ⅰ-Ⅳ1. Ⅱ名詞（姓氏） a surname
  1. On the basis of the theory of thin shells and the non - moment assumption, the equations of the motion of the conical shells under lateral cosinoidal loading are derived in the case of ignoring shearing stress

    基於薄殼理論和無矩假定，在略去剪切應力的情況下推導了圓錐殼在側向餘弦載荷作用下的運動方程，並採用半解析差分方法進行了數值求解。
  2. At first, some advances in the research of dynamic response of cylindrical shells and conical shells are reviewed, and those approaches for studying such kind of problems are summarized here as well. the main objects studied in this paper are the transient response of cylindrical shells under longitudinal line - loading and that of conical shells under cosinoidal impulsive loading

    首先回顧總結了圓柱殼和圓錐殼動力響應的研究進展情況，並簡單歸納了該類問題研究的方法，確定了本文的研究對象主要是縱向線載荷作用下的圓柱殼瞬態響應和餘弦沖擊載荷作用下的圓錐殼瞬態響應。
  3. Following, using the experimental methods, the dynamic response of the stiffened conical shells under cosinoidal impulsive loading is studied. the changes of dynamic response of points along circumferential line of the conical shells are analyzed, and the characteristics of dynamic response of points are studied by both the time - domain analytic method and the frequency - domain analytic method

    採用實驗方法研究了加筋圓錐殼在側向餘弦載荷作用下的動力響應，分析了沿環向各點的響應變化，並從時域和頻域分析了它們各點的響應特性。
  4. The dynamic response of cylindrical shells and conical shells under radial non - uniform impulsive loading has an important application in the filed of military and civil engineering. in this dissertation, the problem of transient response of the cylindrical shell under longitudinal line - loading and that of the conical shell under cosinoidal impulsive loading are studied, and some useful conclusions that have important significances in both theoretic studies and engineering applications are obtained

    圓柱殼和圓錐殼在側向沖擊載荷作用下的動力響應具有重要的軍事和民用工程背景，本文對縱向線載荷作用下的圓柱殼瞬態響應問題和餘弦沖擊載荷作用下的圓錐殼瞬態響應問題進行了研究，取得了一些具有重要理論意義和實用價值的研究成果。
  5. Then, based on the theory of discrete fourier transform, discrete cosine transform and discrete wavelet transform, two invisible image watermarking schemes in transform domain are proposed, one is circular symmetric spread spectrum digital image watermarking based on chaotic sequences, the other is the hybrid image watermarking based on wavelet decomposition and discrete cosine transform. finally, the good performance of the two algorithms is verified by some common image processing and attack experiments

    在分析了dft 、 dct 、 dwt的理論與演算法的基礎上，提出了兩種基於變換域的圖像隱形水印方案? ?基於混沌序列的圓對稱擴頻水印方案和基於小波分解和餘弦變換結合的水印方案，並通過一些常見的圖像處理及攻擊實驗驗證了這兩種演算法生成水印的性能。
  6. 2. the updating algorithm of strapdown matrix is one of the crucial techniques of sins. there are several kinds of attitude updating algorithms of sins, such as direction cosine algorithm and quaternion algorithm

    捷聯矩陣更新演算法是捷聯系統的關鍵技術之一，捷聯慣導系統姿態演算法有歐拉角法、方向餘弦法、四元數法和圓錐補償演算法等幾種方法。
  7. Formulas of inversion and cosine transform spectrum of gravity anomaly of sphere, infinite horizontal cylinder, infinite and finite stretched staircase were deduced

    推導出球體、無限長水平圓柱體、無限和有限延伸垂直臺階的重力異常餘弦變換譜及反演表達式。
  8. The cosine transform spectrum of sphere are about the same as that of infinite horizontal cylinder, and that of infinite stretched staircase are very sharp, but that of finite stretched staircase presents well - regulated leap

    球體與無限長水平圓柱體的餘弦變換譜相似，無限延伸垂直臺階的變化很尖銳，有限臺階的表現為上、下有規律的跳躍。
  9. It builds a relative coordinates based on the jumping - off point of circular interpolation as its origin, caculates the sine and cosine of the angle formed by x axis and the line which connects the origin and the centre of the circle, then gets the coordinates of the centre in the relative coordinates, and enduces a uniform fomula, which is easy to program in computer

    摘要用圓弧插補起點作為相對坐標系原點，連接圓弧起點和圓心，求出該連接線和相對坐標x軸的夾角的正餘弦值，由此解出圓心在相對坐標系的坐標，並得到一個統一的計算公式，易於計算機編程實現。
  10. We simply introduce the application of quaternion numbers in inertial measurement, research the calculation of direction cosine array and introduce equal rotating vector to analyze cone error

    介紹了四元數法在慣性測量中的應用，研究了方向餘弦矩陣的計算方法，並引入等效旋轉矢量對圓錐誤差進行了分析。
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