approximate sum 中文意思是什麼

approximate sum 解釋
概算額
  • approximate : vt 1 使接近。2 接近；走近。3 近似，約計。4 模擬。5 估計。vi 近於。 His income this year approxima...
  • sum : SUM ＝surface to underwater missile 艦對水下導彈[飛彈]。n 1 總數，總計，總額；【數學】和。2 〈the...
  1. We can approximate the growth in total welfare of society as the simple weighted sum of the growth of income in each class.

    把每個階層的收入增長化為簡單權數，我們可以估算出整個社會總福利的增長。
  2. ( 3 ) by means of expanding the aperture function into a finite sum of complex gaussian functions, the propagation of fgbs through a paraxial optical abcd system with hard - edged aperture is studied, and the approximate closed - form equations of apertured fgbs are obtained for the first time. the results obtained by using the approximate closed - form equation and collins formula are compared, and the condition under which the approximate closed - form equation is applicable is analyzed

    （ 3 ）利用光闌函數的復高斯函數展開法對截斷平頂高斯光束的傳輸作了研究，首次得到了截斷平頂高斯光束在近軸abcd光學系統中傳輸時的近似解析傳輸公式，通過比較用近似傳物公式和colhns公式直接數值積分所得的結果，得出了近似公式的適用范圍。
  3. According to the characteristics of uwb standard channel models, we propose the concept of “ composite lognormal random variables ( rvs ) ”. based on this new concept, a new and precise approach is proposed to approximate the statistical distribution of lognormal rvs ’ sum, which places no restriction on the distributional parameters and correlation between the two branches. then, we

    在此基礎上，提出了一種新的對對數正態隨機變量和的統計特性進行近似的方法，該方法對變量的分佈參數和變量間的相關特性沒有任何限制，且精度較已有方法有了進一步的提高。
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