近似方程式 的英文怎麼說

中文拼音 [jìnsìfāngchéngshì]
近似方程式 英文
approximation function
  • 近 : Ⅰ形容詞1 （空間或時間距離短） near; close 2 （接近） approaching; approximately; close to 3 （親...
  • 方 : Ⅰ名詞1 （方形; 方體） square 2 [數學] （乘方） involution; power 3 （方向） direction 4 （方面） ...
  • 程 : 名詞1 （規章; 法式） rule; regulation 2 （進度; 程序） order; procedure 3 （路途; 一段路） journe...
  • 式 : 名詞1 （樣式） type; style 2 （格式） pattern; form 3 （儀式; 典禮） ceremony; ritual 4 （自然科...
  • 近似 : approximate; similar; approach; approximation; roughness; propinquity
  • 方程式 : capeta
  1. Optimized association rules are permitted to contain uninstantiated attributes. the optimization procedure is to determine the instantiations such that some measures of the roles are maximized. this paper tries to maximize interest to find more interesting rules. on the other hand, the approach permits the optimized association rule to contain uninstantiated numeric attributes in both the antecedence and the consequence. a naive algorithm of finding such optimized rules can be got by a straightforward extension of the algorithm for only one numeric attribute. unfortunately, that results in a poor performance. a heuristic algorithm that finds the approximate optimal rules is proposed to improve the performance. the experiments with the synthetic data sets show the advantages of interest over confidence on finding interesting rules with two attributes. the experiments with real data set show the approximate linear scalability and good accuracy of the algorithm

    優化關聯規則允許在規則中包含未初始化的屬性.優化過程就是確定對這些屬性進行初始化，使得某些度量最大化.最大化興趣度因子用來發現更加有趣的規則;另一方面，允許優化規則在前提和結果中各包含一個未初始化的數值屬性.對那些處理一個數值屬性的演算法進行直接的擴展，可以得到一個發現這種優化規則的簡單演算法.然而這種方法的性能很差，因此，為了改善性能，提出一種啟發式方法，它發現的是近似最優的規則.在人造數據集上的實驗結果表明，當優化規則包含兩個數值屬性時，優化興趣度因子得到的規則比優化可信度得到的規則更有趣.在真實數據集上的實驗結果表明，該演算法具有近似線性的可擴展性和較好的精度
  2. This paper puts out the edge shapes curvilinear equations, of the edge shapes of double circular gear hob, and analyzes the tooth surfaces characterist. it also points out that the gear hob is a kind of approximate shape building cutting too ls in the whole course of using

    本文提出了直槽雙圓弧齒輪滾刀刃形曲線方程式，並進一步分析了該滾刀的齒面特性，指出該滾刀從整個使用過程看，是一種近似造型的刀具。
  3. Abstract : this paper puts out the edge shapes curvilinear equations, of the edge shapes of double circular gear hob, and analyzes the tooth surface ' s characterist. it also points out that the gear hob is a kind of approximate shape building cutting too ls in the whole course of using

    文摘:本文提出了直槽雙圓弧齒輪滾刀刃形曲線方程式，並進一步分析了該滾刀的齒面特性，指出該滾刀從整個使用過程看，是一種近似造型的刀具。
  4. In the thesis, the fundamental formula of ffd method derives from the square root that is approximated by a continued fraction expansion in the one - way wave equation. optimizations of the parameters of the finite - difference operator improve the validity of the method

    本論文用連分式近似單程波波動方程中的平方根導出ffd演算法的基本公式，並對ffd演算法中的有限差分運算元進行了系數優化，進一步提高了計算的有效性。
  5. The improvements in the iaga contained adding strengthen operator, improving evaluation index of premature, etc. multi - phase homing project, making use of the flight properties of parafoil system in gliding and turning, was simple in control and facile in practice. based on frenet frame, the linear time - variable error equations of parafoil system were built

    基於frenet坐標系推導和建立了翼傘系統線性時不變的誤差方程，並運用「投影點」的思想來獲得frenet坐標系下偏差量的解析近似表達式，從而設計了用於翼傘系統航跡跟蹤的傳統pd控制器和增益調節型模糊pd控制器。
  6. Especially, the second part of the computing the backscattered field is given. 5

    在利用kirchhoff遠場近似方程計算後向散射系數時，給出了計算該公式第二部分的方法。
  7. The approximate polynomial method was based on neuber ' s method, the cyclic stress - strain responses and neuber ' s rule were treated as probabilistic curves, and the statistic characteristic was obtained from the approximate polynomial. the method is fast and easy for engineering application

    近似的多項式擬合法在諾伯法的基礎上，將循環應力應變曲線和諾伯雙曲線視為概率曲線，通過建立近似多項式的方法，求得局部應力應變的統計特性，快速簡便，適合工程應用。
  8. And that this corrected equation is itself only an imperfect a roximation to an infinite set of quantum field - theoretical equatio

    而這個得以糾正的方程式就其本身而言也只是一個不完美的近似值，趨近於無窮無盡的一整套量子場論方程式。
  9. To meet the need of settlement calculation with fem when absence of laboratory triaxial test data in common road engineering, methods of determining the five parameters included in tangential elastic module through soil routine tests and the related emendation coefficient are given. at the same time, one approximately substituted formula for tangential poisson ratio is also developed, which is suitable for both sandy soil and cohesive soil. ( 3 ) research on main parameters modification of duncan - chang model based on the improved bp network

    對於一般道路工程中不做三軸試驗但須進行沉降有限元計算的情況，給出了依據土體常規試驗的切線彈性模量確定方法和相關修正系數，同時也提出了對砂性土和粘性土均適用的切線泊松比的近似替代式子； （ 3 ）基於改進的bp網路對鄧肯張模型主要參數修正研究。
  10. A numerical approach and a novel analytical solver are used to solve the governing equation of cantilever beam actuated by electrostatic force, and dynamic responses of the cantilever are calculated by mode - superposition

    摘要給出了一種靜電力作用下微懸臂梁控制方程的數值求解方法，提出了求解該模型的近似解析式和修正解析式，並採用模態疊加法計算微梁的動響應。
  11. We introduce liapunov - schmidt reduction method to investigate the bifurcation of a class of nonlinear reaction - diffusion equations in developmental biology. near the bifurcation point we obtain nontrivial solutions branch emitted from the trivial solution

    首先，我們引入liapunov - schmidt約化方法，應用到該方程得到該非線性微分方程在分歧點附近分歧方程的解析近似表達式及其非平凡解的漸進表達式。
  12. The main achievement of the paper is that the nnlse is simplified to a linear equation. it is found that we can controll a weak beam ' s phase to experience a very large phase shift within a rather short propagation distance by modulating the input power of a stronger soliton beam

    本論文的主要貢獻是：把光束的傳輸方程nnlse簡化成一線性形式的近似方程，發現可以通過調節強孤子光束的功率來控制另一弱光的相位並能使之在極短的傳輸距離內產生大的相移。
  13. Lastly, we apply the formulae about the quality of ilopf bifurcation we have obtained to a concrete example, calculating the stability of periodic solution, the direction of hopf bifurcation and the expression of bifurcated periodic solution

    最後，我們將已經得到的判斷hopf分支性質的計算公式應用到一個具體的例子上，求出這個方程的hopf分支周期解的穩定性，分支方向及分支周期解的近似表達式。
  14. That is, we string theorists have some approximate equations for strings, but we do not know the exact equations

    換句話說，弦論學家只得到了一些弦的近似方程式，而仍不知道精確的方程式。
  15. Numerical results show that the designs in the examples of turbine engine frame foundation is very good

    作者結合汽輪機框架式基礎實例把該近似方法應用於結構的動力優化過程，取得了滿意結果。
  16. The current approaches including code methods to calculate stress losses due to anchorage set exist several shortcoming, such as unsuitable to different profiles of tendons or very complicated to compute due to sectional analysis. based on classical theory of friction when tendons are stretched in post - tensioned concrete members, the unified method to calculate the stress losses in tendons due to anchorage set while considering the affection of reverse friction has been established, these formulae are suitable to be used in computer ; also approximate formulae are produced which are suitable to manual computation, they are easy to be applied in research or design

    針對目前預應力鋼筋錨固時鋼筋回縮引起的預應力損失計算方法中存在的問題，建立了考慮反摩阻影響的后張法預應力混凝土橋梁錨固損失的統一計算式，適用於任意形狀的預應力鋼筋和單、雙端張拉的情形；給出了適于機算的理論公式和適于手算的近似計算式，可方便地應用於研究和工程實踐。
  17. To reduce the computational demand, approximations and assumptions are made to simplify the governing equations. as such, the numerical simulation will never be a perfect representation of the real atmosphere

    為了減省計算量，模式往往採用某些近似和假設去簡化基本方程式，因此計算結果也就不是百分之一百真正大氣的寫照。
  18. This complex mechanism of wave amplification and reflection was a plausible hypothesis, but the equations were too complex to solve exactly except with severe approximations

    這個擴大與反射波動的復雜機制是個可能的假說，但其方程式實在太過復雜，除非使用許多嚴密的近似，否則很難精確解出。
  19. The investigation of nonlinear oscillation is very important for the nonlinear science. many methods have been advanced to study weakly nonlinear system, including multiple scale method, kbm method, averaging method, and so on

    非線性振動理論是非線性科學的一個重要研究內容，對於弱非線性常微分方程式控制制的動力系統已經有了許多求近似解的方法，如多尺度法、 kbm法、平均法等等。
  20. Thus ， for instance ， it may come as a shock to mathematicians to learn that the schrodinger equation for the hydrogen atom is not a literally correct description of this atom ， but only an approximation to a somewhat more correct equation taking account of spin ， magnetic dipole ， and relativistic effects ； and that this corrected equation is itself only an imperfect approximation to an infinite set of quantum field - theoretical equations

    因此，舉例來說，對數學家而言，了解到下述情形可能會令其驚愕不已，即薛定諤（ schrodinger ）的氫原子方程式並非是對該原子作出的一種絕然正確的描述，而僅僅是個近似值，趨近於一個在某種程度上更為正確的將自旋、磁性偶極子、以及相對論效應考慮在內的方程式；而這個得以糾正的方程式就其本身而言也只是一個不完美的近似值，趨近於無窮無盡的一整套量子場論方程式。
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