second harmonics 中文意思是什麼

second harmonics 解釋
二次諧波
  • second : adj 1 第二的；第二次的；二等（的）。2 次等的；較差的；劣於…的 （to）。3 〈美國〉較年輕的。4 另一...
  • harmonics : n. 【音樂】和聲學。
  1. The addition formula of spherical harmonics function of degree n and order 1 is derived using the relations between coordinate varieties after coordinate rotating and the property of the associated legendre polynomial. the relations among the magnetic vector potential, the modified magnetic vector potential and the second - order vector potential ( sovp ) are shown going forward one by one. it is explained that the solutions of electromagnetic fields in different coordinate systems can be transformed and an example having analytical solution is given

    利用坐標旋轉后球坐標變量間的關系和連帶勒讓德多項式的性質推導得到了n次1階球諧函數的加法公式；以遞進的方式說明磁矢量位、修正磁矢量位與二階矢量位的關系，寫出了引入二階矢量位的過程；以時諧場矢量邊值問題為例，闡明了不同坐標系下電磁場解的相互轉化原理，給出了一個解析解的轉化例子；在球坐標下，引入了較球矢量波函數更普遍的兩類矢量函數，給出了其在球面上的正交關系。
  2. Because very similar to chi shu rotors very few, the teeth harmonics moment for the second harmonics moment, and two stator mistaken 90e of mutual perspective, the two stator teeth resolved moment worth equal to 13, 800 conversely, synthetic zero

    3 .由於爪極數等於轉子極數，故諧波力矩為2次諧波力矩，而2個定子相互錯位90電角度，所以2個定子的諧波力矩幅值相等，相位相反，合成為零。
  3. The key point of structure design and accuracy analysis in precision mount which is needed in the procession to obtain second and third harmonics generation is introduced

    介紹了實現倍頻和混頻過程所需的精密調整架的結構設計要點及其精度分析。
  4. In this chapter, the suitable devices and circuit structure have been choosed to design a second order multiplier, a fifth order multiplier, a sixth order harmonics mixer and a dro operating in 9. 4ghz. the forth chapter is a section of system realization and test, in this chapter, the system of low phase noise frequency source has been constructed and tested. the results show that the targets of the system have been achieved

    第三章的系統分器件與實驗數據部分，主要是以上述第二章的分析為基礎，以所推導的理論公式為指導選取必要的器件和合適的電路拓撲結構，分別設計實現了一個二次倍頻器，五次倍頻器， 6次諧波混頻器和一個9 . 4ghz的介質振蕩器，為後述整個系統的實現在硬體上做了必要的準備。
  5. For example, to the frequency splitting between fundamental wave and second harmonics, the filter daub6 and cqf12 do well in extract the fundamental wave, whereas the filter daub5 and daub6 do well in extract the second harmonics

    如對于基波與二次諧波的分頻， daub6和cqf12濾波器對基波的濾波效果較好，而daub6和daub5對於二次諧波的濾波效果較好。
  6. The second reason is the nonlinear rectifier with a bulky capacitor in the input stage of the smps, which leads to a narrow pulse and rich harmonics

    原因之二是開關電源的輸入端採用二極體整流，後接較大的濾波電容，導致輸入電流為一很窄的脈沖波，含有豐富的諧波分量。
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