正弦函數 的英文怎麼說

中文拼音 [zhēngxiánhánshǔ]
正弦函數 英文
sine function
  • 正 : 正名詞（正月） the first month of the lunar year; the first moon
  • 函 : 名詞1. [書面語] （匣; 封套） case; envelope 2. （信件） letter 3. （姓氏） a surname
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 函數 : [數學] function函數計算機 function computer; 函數計算器 function calculator; 函數運算 functional operation
  1. The cosine rather than the sine is customarily used in this case.

    在這種情況下，習慣上用餘弦函數而不是正弦函數。
  2. The expression for g can be rewritten in terms of trigonometric sines and cosines.

    關于g的表達式可以重寫成三角函數的正弦和餘弦形式。
  3. Sinusoidal jump function

    正弦跳躍函數
  4. Abstract : bridge function and generalized bridge function are all three - valued function, and are made by initial sequence according as copied or shifted ways. they include some familiar orthogonal function of non - sine, such as walsh function. this paper briefly introduced some research advance on this subject, emphasized to introduce the copy theory and generalized copy method. the process of making ( generalized ) bridge function, its property and application, were introduced briefly

    文摘:橋函數和廣義橋函數均為三值函數系，都是將初始序列經復制方式和移位方式變換后而形成的.它們包括了一些常見的非正弦正交函數，如沃爾什函數和方波函數等.簡要介紹了近10年來北京航空航天大學通信與電子系統博士點在非正弦正交函數方面研究的一些新進展，重點介紹了復制理論和廣義復制方法，橋函數、廣義橋函數的復制生成方法、性質及其應用等專題
  5. Inside the film, the field varies sinusoidally and the entire surface-wave mode propagates alone the horizontal z direction.

    在薄膜內，場按正弦函數變化，整個表面波模沿水平Z方向傳播。
  6. Using linear circuit to simulate nonsinusoidal waveforms of periodic signals

    用線性電路模擬非正弦周期函數信號的波形
  7. There are five parts are as follows : in part one, the concept of switching function is introduced first to establish the nonlinear mathematical model of the induction motor variable frequency speed adjustment system which is fed by a sine pulse width modulated ( spwm ) inverter and takes the effect of the main magnetic circuit saturation into consideration, then the low frequency oscillation of the system is simulated according to the model. next, from the view point of energy conversion of the inverter - induction system, a criterion for the low frequency oscillation is proposed to determine whether the system is in low frequency oscillation which is judged by whether the interval of the negative current component of the inverter input current is more than 1 / fc ( fc is the carrier wave frequency of the inverter ) or not

    首先引入開關函數概念，建立了正弦脈寬調制（ spwm ）逆變器供電異步電動機，考慮主磁路飽和時的變頻調速系統整體數學模型，模擬系統的低頻振蕩；其次從逆變器-異步電動機系統能量轉換角度出發，提出通過檢測逆變器輸入電流中負電流的間隔時間是否大於1 / f _ c （ f _ c為逆變器載波頻率）來判定系統是否出現低頻振蕩；最後的實驗結果驗證了系統低頻振蕩建模和判據的實用性和正確性。
  8. Conditions of normal mode realization are deduced and optimized model with the multivariate mode indicator function as the target function is built. through solving the maximal eigenvalue problem, the original shaker force vector of appropriation is reached. then the realization approach of the optimal shaker force vector based on single shape principle is proposed and at the same time the automatization of normal mode appropriation is realized

    對于模態物理分離技術的多點正弦激振純模態試驗技術，尋求其最佳激振力矢量是最為關鍵的環節，本文先推導出純模態實現的條件，建立以多變量模態指示函數為目標函數的優化模型，通過求解最大特徵值問題，得出適調純模態的初始激振力矢量，再提出以單純形原理為基礎的最佳激振力矢量的實現方法，同時也實現了純模態適調過程的自動化。
  9. A study on the proposed scanlan linearity has discovered that if the self - excited loads and movement of the model and velocity constitute a linear relationship, and the model vibration accounts for a sine function of the frequency, the rate of the high - order harmonic waves should be quite small

    考查了scanlan的線性假定：如果自激力與模型運動的位移、速度成線性關系，模型振動是某一頻率的正弦函數，那麼相應的自激力也應是這一頻率的正弦函數，高次諧波的分量應極小。
  10. This paper develops iterative formula of sine and cosine function in document [ 40 ], and presents new pixel - level algorithms for generating archimedes and involute curves which are widely used in engineering

    本文推廣了文獻[ 40 ]中正弦、餘弦函數的遞推公式，對工程繪圖中常用的阿基米德曲線和漸開線設計了新的逐點生成演算法。
  11. Their learning and training rules have been analyzed profoundly and their abilities to approximate arbitrary nonlinear function have been testified and compared by the simulation. a new rbf neural network has been presented which uses a raised - cosine function as activation transfer function. it provides a wider generalization in comparison with gaussian rbf neural networks by simulation as well as strong approximation ability, fast convergence, a rule to select the parameters of the networks

    本文詳細研究了兩種典型的前向神經網路（ bp網路和rbf網路）的學習和訓練演算法，提出了一種新穎的基於緊支集餘弦函數的徑向基神經網路，其克服了常用的高斯型rbf神經網路雖具有緊支集但各基函數非正交的不足，其收斂速度快、網路參數選取有理論依據且相比于高斯型rbf神經網路具有更強的泛化能力，模擬驗證了其有效性。
  12. Resolving - transformers is a kind of component that converts the rotor corners to electrical signals, one has sine functional relationship with the rotor - comers, while the other has cosine ones, and this component has been widely used in many fields such as automatic controls, aviation and firepower fields to implement the information transmission of shaft - angle between systems

    正餘弦旋轉變壓器是一種將轉子轉角變換成與之成正餘弦函數關系的電信號的元件，被廣泛應用於自動控制、航空、火力控制等領域，以實現系統之間軸角信息的傳輸功能。
  13. In this paper, according to the periodically active characteristics shown in the historical earthquake data in this region since 1900, we describe the rule of seismicity with sine function and furthermore make a preliminary forecast of the seismicity intensity and the developing trend in northeast china till the year of 2008 by using the periodogram of time sequence and other analytical methods

    摘要根據東北地區1900年以來的歷史地震資料所顯示的周期性活動特點，用正弦函數描述其地震活動規律，並結合時間序列的周期圖及其他一些地震活動性分析方法，對該地區未來1 ~ 3年地震活動發展趨勢和地震強度作了初步預測。
  14. Since these two electric fields must be in phase at point p for constructive interference to occur, the arguments of the sine functions must be equal

    由於兩個電場在p點必須同相以獲得相干，這兩個正弦函數必須相等。
  15. Emulation on nonsinusoidal single - phase and nosinusoidal balanced three - phase systems are also given. there are nine kinds of arithmetic of ac sampling based sinusoidal and periodic modal in this paper

    本文還綜述了基於正弦函數和周期函數模型的9種交流采樣演算法，分析了影響測量精度的原因並給出了解決措施。
  16. Inside the film, the field varies sinusoidally and the entire surface - wave mode propagates alone the horizontal z direction

    在薄膜內，場按正弦函數變化，整個表面波模沿水平z方向傳播。
  17. Arc - sin function

    反正弦函數
  18. Inverse sine function

    反正弦函數
  19. The advantage of the variable is presented and a sine function con roller is constructed

    通過研究，提出了一個正弦函數開工的控制器。
  20. On the one hand, the idea of watermarking is used by slightly adjusting text format, which changes the grayscale of characters by sine function ; on the other hand, the algorithm considers the structure of chinese document and information of chinese character during the embedding

    一方面保留微調文本格式的思想，利用正弦函數控制字元的灰度值;另一方面在水印嵌入時，結合了中文文本的結構信息和漢字信息。
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