導出限值 的英文怎麼說

中文拼音 [dǎochūxiànzhí]
導出限值 英文
derived limit
  • 導 : 動詞1. （引導） lead; guide 2. （傳導） transmit; conduct 3. （開導） instruct; teach; give guidance to
  • 限 : Ⅰ名詞（指定的范圍; 限度） limit; bounds Ⅱ動詞（指定范圍, 不許超過） set a limit; limit; restrict
  • 導出 : leading-out; derive; derivation
  1. On the basis of investigations into the progressive yield process and the possible failure modes of rcc gravity dams, the quasi - elasticity design limit state of the ctrtical stability criterion is proposed and the real working state of the dams designed according to the ctriterion is discussed. a check formula using the material strength reducing factor as the safety index and a simplified formula similar to against sliding stability fromula are derived. finally, the corresponding design safety factors are given by using fem calculations with various influence parameters to be taken into account

    本文在研究碾壓混凝土重力壩漸進破壞過程和可能失穩方式的基礎上，提出了以準彈性臨界作為穩定臨界準則的設計極限狀態，分析了按該準則設計的大壩的實際工作狀態，導出了以準彈性強度儲備系數為設計安全指標的審查公式以及形式與抗剪斷公式相同的簡化公式，探討了定量計算考慮各種因素影響的相應設計安全系數的合理取值，並與現行規范方法進行了比較
  2. Liberation of hydrogen gas would be increased rapidly and sic particles on the surface might be dispersed if the current density exceed the upper limit. furthermore, nickelous hydroxide would be deposited because the ph of plating solution nearby the surface rapidly increased. all of above might result in coating deterioration

    若電流密度過大，超過所允許的上限值，會析出大量的氫氣，可能沖散表面覆蓋的sic微粒，而且易使磨頭表面鍍液ph值急劇上升而形成氫氧化鎳沉澱，導致鍍層質量惡化。
  3. In the meantime, the tolerance limit of coordinate difference in the station for site testing is given and it is possible to test total station coordinate trave rse in site

    同時，根據該原理，給出了測站坐標差限值，從而實現了全站儀坐標導線的現場檢核。
  4. By end of 1998, the nominal value of derivatives transactions had happened in the official exchange within 5 years increased from 7. 7 trillion u. s. dollars to 13. 5 trillion u. s. dollars, meanwhile, the nominal value of derivative securities ( otc ) increased from 8. 7 trillion u. s. dollars to 51 trillion u. s. dollars, then, the nominal value of unliquidated derivatives was total about 64 trillion u. s. dollars, and the academic field also emerged frontier science borrowing for the financial science, physics financial science, financial engineering, etc. 1973, black and scholes put forward the differential equation that any derivative securities prices based on any non - dividend paying stock must be satisfied, that is black - scholes differential equation

    Jamshidian . f在其1989年的文章中推導出零息債券的期權價格。奧托同樣在其1998年的論文中用統計物理學中的路徑積分方法推導出了基於零息債券為基礎的期權定價模型。本文在這些學者研究成果的基礎上，進行了更深層次的研究，在vasicek隨機模型的基礎上，打破上述學者及著名的black - scholes期權定價模型只能求解證券及其衍生產品價格平均值的限制，對零息債券和基於零息債券的期權的價格求解，並推導證券瞬時價格的分佈函數。
  5. Calculate method of shear force is discussed on difficult obliquity in this paper. a calendar method to shear force of slanting knife - edge is put forward

    斜刃剪切時刃傾角取不同值時剪切力的計算方法不同，推導出相應的計算公式並限定了適用范圍。
  6. A normal transform is introduced, and there are enough much grids in the region between the critical layer and the wall, where the variation of the disturbance is the quickest. the finite - difference of governing equations with fourth - order accuracy in the normal direction is utilized in full regions including points close the wall, and is very important for accurately discreting equations. the combination of global and local methods is implemented, and a new iterative formula is derived

    對于曲線坐標系下的拋物化穩定性方程，文中發展了求解的高效數值方法:引進法向變換，使得在臨界層與壁面之間的擾動量變化最快的區域有更多的法向網格點;導出包含邊界鄰域在內的完全四階精度的法向有限差分格式，這對方程精確離散至關重要;採用全局法和局部法相結合的方法及其新的迭代公式，大大加速收斂並得到更精確的特徵值。
  7. Experiment is carried out to verify the theory of this paper. what ' s more much feas are carried so as to deduce a formula to see if the theory is correct

    另外還做了有限元分析，一方面模擬試驗中的試件，另一方面通過大量的有限元計算擬合出寬厚比限值公式以便與理論推導、試驗數據互為驗證。
  8. Based the humidity theory, the paper adopts the relative humidity as the character value and puts forward using 30 % rh and below 0c dew - point as the on - line monitoring critical value. it gives the method of volume ratio convert at the different temperature. with the standard value, we can conclude the result of moisture content

    針對現有規程標準中控制水分的指標的缺點和局限，提出了採用相對濕度作為監測特徵量並轉換為露點以直觀表示設備絕緣狀況：採用30相對濕度及0以下露點作為監測的臨界值與允許值；同時推導出了體積比單位在不同溫度下的折算方法，以結合現有標準，綜合分析，做出判斷結論。
  9. Using the complex potential method in the plane theory of elasticity of an anisotropic body, the series solution of finite anisotropic thin plate containing an elliptical inclusion is proposed with the help of faber series. a hybrid element with an elliptical inclusion for anisotropic materials is obtained by using the hybrid variable principle, and the element efficiency is verified by numerical examples. the state of the damage is modeled by an elliptical soft inclusion, and using the point stress criterion based on characteristic curve and yamada - sun etc. criteria, the prediction of the strength of a composite laminate with damage is set up

    首先基於經典層板理論，將復合材料層板的彈性問題化歸為均勻各向異性板來求解；採用各向異性體平面彈性理論中的復勢方法，以faber級數為工具，給出了有限大含橢圓核各向異性板彈性問題的級數解形式；利用雜交變分原理，成功導出含橢圓核各向異性板雜交應力有限元，並用算例驗證了該單元的可行性和有效性；採用含剛度折減橢圓形彈性核的沖擊損傷模型，引入基於特徵曲線和yamada - sun破壞準則的點應力判據，建立了含損傷復合材料層板剩餘強度的分析方法；通過數值計算詳細討論了各種幾何參數對損傷層板應力分佈、剩餘強度的影響，得到了一系列對工程應用具有實用價值的結論。
  10. This paper try to mix the finite strip method and hybrid stress element, and deduce a numerical and computer method which combines the advantages of the two methods - mixed hybrid finite strip method ; analyze the intensity and stability of the orthotropic plate by this method ; deduce the formula of the orthotropic plate ' s analysis and calculation under this method ; compile the program of orthotropic plate ' s mixed hybrid finite strip method ( hfsop. for ) with fortran - 77 language, and perform them under fortran90 environment of pc computer ; comparing with traditional methods by example of computing, prove that the mixed hybrid finite strip method have better degree of accuracy, moderating the stiffness of plate, coming more close to actual conditions, avoiding over - hard or over - soft ; finally, this paper analyze the stability of a orthotropic plate by this method, and deduce the - value of critical stress

    論文將有限條法和應力雜交元法兩者結合起來，導出一種兼有兩者優點的數值計算方法? ?混合雜交有限條法。運用這種方法對正交異性板的強度和穩定進行了分析，推導出正交異性板在這種方法下的分析計算公式，用fortran - 77語言編寫正交異性板混合雜交有限條法程序（ hfsop . for ）在微機fortran90環境下運行。通過算例與傳統的方法比較，驗證混合雜交有限條法有更好的精度，使板的剛度適中，更接近實際情況，避免「過硬」或「過軟」 ；最後，論文還用此方法對一正交異性板進行了穩定分析，得出臨界應力值。
  11. In this dissertation, the numerical computation for the acoustic radiation problem ( arp ) is studied deeply and systematically in the theory, method and the application technique, based on analyzing the situation of the home and abroad on the numerical computation for the acoustic radiation problem. the calculation formulas of the boundary element method ( bem ) for the exterior acoustic radiation problem in the full - space and half - space are deduced, based on the wave propagation theorem ; the arising of the non - unique solutions, which is associated with the application of the boundary integral equation ( bie ) in acoustic radiation problem, is analyzed and proofed ; the improved combined helmholtz integral equation formulation ( ichief ) is presented to overcome the non - uniqueness problem more effectively and reliably ; the determination of the singular integral coefficients on various occasions is analyzed ; the properties and treatments of the singular integrals with different orders axe studied ; the computation program of the cubic spline ichief is developed and its ability to overcome the non - uniqueness problem and feasibility to discrete the surface coarsely with the sufficient calculation precision are examined through examples

    第二章在聲波動理論基礎上，詳細地推導出對應于無限域和半無限域的外部振動聲輻射問題的邊界積分方程計算公式；根據fredholm積分理論，對利用邊界積分方程計算振動聲輻射問題過程中解的非唯一性的產生進行了分析和證明；改進了chief法以提高其克服解的非唯一性的有效性和可靠性；對不同條件下奇性系數的計算、強奇性積分的收斂性及其在變量替換時與普通積分的差異性、不同階奇性積分的計算、數值求積分等進行了研究；開發了三次樣條改進chief法計算軟體，並通過算例考核了該方法在特徵波數處克服解的非唯一性的有效性和在保證計算精度的前提下實現剖分粗化以提高計算效率的可行性。
  12. The major contributions of the dissertation are as follows : 1. it is well known that the multi - value cdma spreading codes can be designed by means of a pair of mirror multi - rate filter - banks based on some optimizing criteria. the dissertation indicates that there exists a theoretical bound in the performance of its circular correlation property, which can be described by an explicit expression. based on this analysis, a criterion of maximizing entropy is proposed to design such codes

    研究了基於兩帶鏡像多速率濾波器組來設計的多值cdma擴展碼的方法，並推導出了基於這種方法設計的碼序列在循環相關特性方面所能達到的極限，以及達到此理論極限時應滿足的條件；在此基礎上，提出了一種基於熵最大化準則來產生cdma擴展碼的設計方法。
  13. Based on the method of limitation analysis of soil plasticity, researching from the soil arching mechanism of soil - nailing retaining, the upper limit of the critical height of soil - nailing slopes and the minimum horizontal length from coping of the potential slide surface to the edge of deep excavation are obtained through the analysis to weight of soil and vertical loading and the mechanism of soil and soli - nailing acting reciprocally

    摘要基於土的塑性極限分析方法，以均質土坡為例，從土釘支護結構的準粘聚力理論出發，綜合考慮土體自重、坡頂的條形荷載，以及土釘與土體的相互作用的機理，推導出了土釘支護的臨界高度的上限值和潛在螺旋曲線滑動面在坡頂方向距基坑邊沿的最小水平距離解析表達式，可供基抗支護設計參考。
  14. Considering the fuzziness of some boundary conditions enviroment media, and especially some loads in the engineering structure analysis, we go further into the computation based on the dynamic problem of fuzzy finite element ( ffe ), study further and systematically the analysis and solution. the principle of fuzzy minimum potential energy is established, and the balance equation of fuzzy finite element is reasoned by making fuzzy variation. at the same time, the dynamic balance equation of stochastic by making stochastic variation ， also the fuzzy stochastic dynamic balance equation is deduced. based the theory that the degree of the fuzziness and probability can be measured, in the other word, by using the concept of fuzzy entropy and entropy, pure fuzzy dynamic structure is given through transforming the probability to fuzziness. for the fuzzy parameter can be regarded as a fuzzy vector with dimensions, the structure ' s eigenvalue, by the theory of small parameter

    建立了模糊瞬時最小勢能原理，運用模糊變分原理導出了模糊有限元動力平衡方程；同時，利用隨機變分原理導出了動力問題的隨機有限元方程，同時得到了模糊隨機動力問題的有限元平衡方程。根據模糊度和概率度可以度量的原理，即利用模糊熵和概率熵的概念，把結構的隨機性等效地轉化為結構的模糊性，得到純粹模糊性的動力結構。把結構所具有的模糊參數看作一個維的模糊向量，利用小參數攝動原理，把結構的特徵值，特徵向量和位移都在模糊向量的均值處進行泰勒展開，得到一組遞歸方程，即可以求得結構的模糊特徵值，特徵向量和模糊位移。
  15. From theoretical analysis, we know the existing demodulation methods have limitations as following : one is that the subtraction of the two signals frequencies will display as the result of demodulation when we demodulate two time - domain adding signals without modulating information ( fault information ) ; the other one is that aliasing phenomenon will occur as a result of getting absolute value, detection or square in the process of generalized demodulation analysis, such phenomenon will result in some superfluous frequency composition on the frequency spectrum, which will puzzle the detec tion of mechanical vibration. if the sampling frequency is selected from a suitable range, the aliasing phenomenon will be avoided ; the last one is that aliasing frequencies will be produced in zoom demodulation analysis because this algorithm cannot employ digital low - pass filtering to avert the folding frequencies of higher harmonics in the process of zoom sub - sampling

    現有的解調分析方法存在以下三種局限性：將不包括調制信息（故障信息）的兩時域相加信號，也以其頻率之差作為解調信號而解出；廣義檢波濾波解調分析中，由於取絕對值、檢波或平方過程可能產生混頻效應，在解調譜中表現為無法分析的頻率成分，並由此推導出避免這種混頻現象的采樣頻率的選取范圍，從根本上避免此類誤診斷的產生；幾種細化解調分析新演算法中，因為無法在細化分析的選抽時進行數字低通濾波，有可能會出現調制頻率的高次諧波成分發生頻率混疊而反折到低頻部分的現象。
  16. According to the basis relation of stress, strain and the value of limit deformation during the strengthening of concrete architecture, the derivate computing method is applied under different state of load and internal force. and it is towards difference of stress and strain of the new and old part of the strengthening structure. it is pointed out that unloading is the necessary and important method of taking advantage of effect of the strengthening structure

    本文根據混凝土結構加固中材料的基本應力? ?應變關系和極限變形值，針對加固結構新舊兩部分的應力、應變差，應用迭加原理，導出了加固結構在不同受力狀態下的承載力和內力適用設計計算方法，指出了「卸荷」是充分發揮加固結構效能的必不可少的重要手段。
  17. In this thesis, the multi - channel sharing system is considered as a stochastic service system. based on the steady state solution of the birth and death process which state space is a limited set, utilized m / m / n / n / m queue model, the call congestion ratio formula and the channel utilization ratio formula fitting to the limited user system are derived. drawing support from the visual data analyzing function of the software matlab, the value divergence between the formulas and the corresponding one fitting to the infinite user system are compared

    本文將多通道共用通信系統視為一個隨機服務系統，根據有限狀態生滅過程的穩態解，利用m m n n和m m n n m兩類排隊模型，分別推導出了無限用戶和有限用戶兩類多通道共用系統的呼損率公式和通道利用率公式；藉助于matlab的可視化數據分析功能，比較了這兩組公式在數值上的差異；指明了兩組公式的適用條件。
  18. The accuracy of reliability calculation was improved in the derivative sfem method. the local derivatives of fem and numerical method were used to obtain the iterative formulas of the performance function ' s local derivatives. the procedure is relatively simple and adaptable to engineering application as the stiffness matrix formed and decomposed only once

    偏導sfem可靠度法求解構件疲勞可靠度，可靠度計算精度得到改善，通過有限元求偏導，結合數值微分技術，推導出了功能函數的偏導迭代格式，只需一次形成和分解總綱，計算較簡便，適合工程應用。
  19. But after the safety premium and after - tax cash flow advantage are considered, the explanation of the wealth transferring effect is enhanced. the above research does not consider the restriction of hard call requirement and soft call requirement on call behavior, and the call notice period is only analyzed with experiences. therefore, starting from the pricing model and after considering the restrictions of various convertible bonds contracts, this article proceeds to build a model based on binomial tree, calculate the value of convertible bonds using the numerical method of forward shooting grid and gain the operation principle of optimal call of corporations

    上述的研究沒有考慮硬贖回要求和軟贖回要求對贖回行為的限製作用，對贖回通知期的考察也只是採取了一個經驗值來刻畫，因此本文接著從定價模型出發，在綜合考慮了各種可轉換債券合約對贖回行為的限制條款后，構建了一個基於二叉樹模型並應用向前網格射擊的數值方法來求解可轉換債券的價值，並推導出了公司的最優贖回運演算法則。
  20. The forward calculation of control signal and back - propagation of network - weight modification equations are given, along with the principle to specify the initial net - weight values. the output of the network is set with limit. simulation shows turbine controlled with the n - pid governor can achieve good static and dynamic characteristic

    推導出了n - pid控制器的前向演算法和反傳演算法，討論了n - pid網路權重初值的確定和對輸出進行限幅的處理，在對使用n - pid控制器的水輪機調節系統所作的模擬實驗中，獲得了良好的動態和靜態性能。
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