second moment 中文意思是什麼

second moment 解釋
次級偶甩
  • 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...
  • moment : n 1 一轉眼功夫 片刻 瞬息 剎那；時刻。2 時機 機會；場合；危機；當前。3 重要 緊要；【哲學】要素 契...
  1. On the other hand, the moment, the second moment and variance of the present value random variables about some life annuities and annuities with random interest rate are gotten

    另一方面討論了隨機利率下的一些離散年金、連續年金和連續生存年金現值隨機變量的一階和二階原點矩及其方差。
  2. It shows that the method and the results can be used for designer, capital construction manager and researcher reference. 6 > the statistic parameters of load effect and resistance on fatigue reliability are studied in the paper. according to statistic analyzing of the real data from spot and the old test data, the fatigue reliability is calibrated on 8 details, which are provided in the code, by first order second moment ( fosm )

    6 、通過鋼結構吊車梁實測資料與以往疲勞試驗資料進行統計分析，提出了荷載與抗力的統計參數，用一次二階矩方法對鋼結構規范中規定的8類連接和構造型式的疲勞可靠性進行了校準分析，根據計算結果給出疲勞目標可大連理工大學博士學位論文一靠指標的建議值與分項系數的設計表達式。
  3. In arbitrary curvilinear coordinates, the wall function is used for treating near wall regions. the influences of two different inlet gas parameter distributions and turbulent combustion models, as well as three different afterburners on turbulent combustion flow fields and wall temperature profiles are calculated. comparisons of experiment results and calculations results show that second - moment combustion model is reasonable for modeling turbulent reacting flows, inlet gas parameter distributions is more important. calculation method is reliable and can be used for the optimum design of afterburner

    數值研究三種不同幾何形狀、兩種進口氣流參數分佈、兩種紊流燃燒模型等對加力室內各氣流參數、隔熱屏和加力室筒體壁面溫度分佈的影響，計算結果與試驗數據比較表明:不同幾何形狀加力室對加力室內紊流燃燒流場的影響要比進口氣流參數分佈大些，正確給定進口氣流參數分佈較為重要，二階矩紊流燃燒模型更適用摸擬三維紊流燃燒流動，計算方法合理，編制的計算程序可靠，可供加力燃燒室優化設計用。
  4. Second moment of area of tranformed section

    換算截面慣性矩34
  5. Furthermore the computer program ism for analyzing structural reliability is developed by using advanced first order second moment method and important sampling monte - carlo method

    分析了4種損傷：即疲勞、凹坑、腐蝕和海生物損傷，並推導出時變構件可靠性計算的有關公式。
  6. It shows that when walk - off and diffraction effects could be ignored approximately estimation of the phase distribution of second - harmonic wave could be done. the far field divergent angle and second moment radius of harmonic wave will vary with the aberration of fundamental wave, but the far field divergent angle will be obviously smaller than that of fundamental wave. the phase distribution of both fundamental and harmonic wave is measured using hartmann - shack wave front sensor in the experiment with 1064nm and 790nm lasers, respectively

    這說明利用非線性光學頻率變換方法拓寬波前傳感器件的響應波段是很難實現的，但是，通常三波相互作用過程的研究均是建立在平面波和理想高斯光束之上，因此我們對于位相畸變倍頻過程的研究是非線性光學領域一個重要而有意義的新課題，它有助於人們更加深入理解非線性光學效應，為進一步合理利用之奠定了理論和實驗的基礎。
  7. Then we calculate three correlation lengths in order to see what happens in low density. the second moment density - density correlation length n, 1 is from the density - density structure factor, the second moment charge - charge correlation length z, 1 is from the charge - charge structure factor, and the lebowitz length l is related to the charge fluctuation

    我們計算了與密度一密度結構因子相聯系的密度一密度二級矩關聯長度g川，與電荷一電荷結構因子相聯系的電荷一電荷二級矩關聯長度久； ，以及與電荷漲落相聯系的lebowttz長度乙。
  8. The main idea of this method include two steps : at first, the approximate expression of function is obtained by method of weighted residuals ; then the first and second moment of the random function can be calculated with method of moment

    該方法的基本思想是利用加權殘值法獲得問題解的近似函數表達式，在此基礎上利用求解隨機變量函數的矩法求得隨機函數的一、二階矩等統計數字特徵。
  9. The three - dimensional ocean mode, pom, which contains an imbedded second moment turbulence closure sub - model could simulate well the tides in the study region

    湍封閉的三維全流動力模式pom可以較理想地模擬渤黃東海的潮波。
  10. The beam quality factor m2 is now widely used to characterize the quality of laser radiation. the comprehensive analysis and accurate calculations for the beam quality factors of the semiconductor lasers with different waveguide structures are provided based on the non - paraxial second - moment theory

    本文基於非傍軸二階矩理論，全面的分析了半導體激光光束的光束質量因子m ~ 2 ，並計算了不同波導結構的半導體激光光束的質量因子，給出其精確的解析表達式。
  11. ( 4 ) the difference of the constraint conditions makes the second moment in prestressed frames less than that in the prestressed beams

    （ 4 ）約束條件的不同使單層兩跨預應力混凝土框架梁中的次彎矩要遠小於兩跨的預應力連續梁。
  12. Then the proportion of the modulation of moment taken by the second moment in the total modulation in prestressed frame is less than that in prestressed beam

    同時，次彎矩調幅占總調幅的比重在框架中要遠小於連續梁。因此，次彎矩協助調幅的作用在框架中也弱於在連續梁中。
  13. Under natural environment, the plate character can be faint or transfigured. as a result, we bring up several algorithms to process the noise in the image, including single point noise processing algorithm, noise processing methods based on connected area, second - moment and edge scanning, which are efficient in getting rid of the noise

    本文根據自然條件下車牌字元模糊，變形等特點，提出了多種圖像噪聲處理的演算法，包括單象素噪聲去除演算法，基於連通域和二階矩以及邊緣掃描的噪聲去除演算法，較好的去除了圖像中包含的噪聲區域。
  14. Second moment of area

    截面慣性矩
  15. Based on the calculation of shearing - slipping failure probability of high arch dams, the calculation method and procedures are presented by use of the second moment method for calculation of the occurrence probability of the major failure modes of high arch dams, and the relation degree between the major failure modes and the failure probability with multi - failure modes of the high arch dam are calculated

    以計算高拱壩剪滑潰壩發生概率為例，說明利用二階矩法計算高拱壩各主要失效模式發生概率的步驟，進而求解各失效模式的相關程度及具有多個失效模式高拱壩的失效概率。
  16. There. your second moment. that ' s another $ 50

    又拍了第二張，再加50塊
  17. There. your second moment. that ' s another 50

    又拍了第二張，再加50塊
  18. In the last days of the second moment a great war is to be concluded with judgment and a global conflagration lasting 1, 468 years

    在第二片刻的最後日子，一場世界大戰最後是隨著審判而來，一場全球的大火災持續了1 ， 468年。
  19. In discrete condition, considering two cases of independent identical distribution and dependent distribution, we gave the moment, the second moment and variance, in continuous condition, models of the random rate of interest were established respectively by gauss process, wiener process or o - u process

    對于離散型情況，考慮了獨立同分佈和非獨立兩種情形，分別給出了給付現值的一、二階矩和方差。
  20. Moreover, the special expression of the moment, the second moment and variance with de moivre ' s death rate were given. finally, considering abrupt event ' s effect on interest, we established the models of the random rate of interest jointly by gauss process and poisson process, wiener process and poisson process or o - u process and poisson process, also gave the moment, the second moment and variance of the payable present value under the three cases. moreover giving the special expression of the moment, the second moment and variance with de moivre ' s death rate

    對于連續型情況，隨機利率分別採用gauss過程、 wiener過程和o - u過程建模，分別給出了給付現值的一、二階矩和方差，並在demoivre死亡律假設下得到了矩的簡潔表達式；考慮到突發事件對利率的影響，又對隨機利率採用gauss過程、 wiener過程和o - u過程分別與poisson過程聯合建模，分別給出了給付現值的一、二階矩和方差，並在demoivre死亡律假設下得到了矩的簡潔表達式。
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