超定方程 的英文怎麼說

中文拼音 [chāodìngfāngchéng]
超定方程 英文
overdetermined equation
  • 超 : Ⅰ動詞1 （越過; 高出） exceed; surpass; overtake 2 （在某個范圍以外; 不受限制） transcend; go beyo...
  • 定 : Ⅰ形容詞1 （平靜; 穩定） calm; stable 2 （已經確定的; 不改變的） fixed; settled; established Ⅱ動詞...
  • 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...
  1. And the deficiencies are pointed out in present researches, such as highway capacity, level - of - service, influence factor of road alignments, etc. from these, it has confirmed that the thesis should be studied from rational analysis, quantitative analysis of level - of - service, impact on capacity of road alignments, setting - up simulation model, etc. the high - accuracy gps dynamic data acquisition appearance is proposed to be used for the first time to carry on the experiment of overtaking on two - lane highways, and experiment scheme is designed according to the driver ' s perceive to judge each overtaking course. based on the experiment data, it can get two important parameters of acceptant gap ? the critical gap of overtakable time headway and returnable time headway through data processing, which can offer the strong support to the research of two - lane highway capacity with qualitative and quantitative analysis. besides, the experiment methods is provided to observe overtaking ratio and to measure the

    研究中首次提出了運用高精度gps動態數據採集儀對雙車道公路上的超車行為進行觀測，設計了根據駕駛員感受度來衡量超車過程的實驗方案，並通過後期數據處理得到了超車過程中兩個重要的可接受間隙參數-可超車車頭時距和可回車車頭時距的臨界間隙值，為定性和定量分析雙車道公路通行能力提供有力的數據支持;同時，還提出了觀測超車率的實驗方法以及測量加速度干擾的實驗方案，統一了計算加速度干擾的時間統計間隔，為雙車道公路的服務水平量化研究奠定基礎;最後還簡單介紹了駕駛員問卷調查法和模擬程序中模型參數標定和驗證的數據採集方法。
  2. Considering the eigen - equations belong to redundance equations because the measured eigen - pairs are less than the orders of model, in order to solving the ones and get the modification matrices of mass and stiffness, the excrescent variables are given randomly

    為了求解超越方程以確定質量與剛度修正矩陣，提出隨機給定超越方程中的多餘變量值，採用遺傳演算法來尋優。
  3. The influence of the cloud droplet spectrum character and the spectrum growth and change is considered, which does not use a cut - off value for conversion from cloud water into rain water process. in the continuous coalescence equation, the particles fall velocity difference is not moved out from the integral, but is integrated in the equation as the function of diameter d to avoid the error of using particles average fall velocity. in the new scheme, generation rate of graupel due to the collection of snow by graupel and the collection of cloud ice by graupel are included

    雲中凝結核ccn的數濃度採用超幾何函數表示；雲水向雨水的自動轉換過程採用grabowski （ 1999 ）的公式，考慮了雲滴譜的特徵和發展變化對該過程的影響，而不是採用原方案給定閾值的方法描述該過程；對連續碰並方程不再將粒子落速差作為常量提出積分號外，而是直接作為粒子直徑函數在積分號內求解，這樣處理可以迴避使用粒子群的平均落速帶來的誤差；增加了霰和雪、霰和冰晶的碰並微物理過程。
  4. The results show that - condensate appears at some baryon densities and makes great effect to the curve of state equation of neutron star ; hyperons - and a exist in neutron star matter at high desities

    結果表明， ~ -凝聚將出現在一定的重子密度區間，並對中子星狀態方程曲線有重要的影響；超子~ -和在較高密度也會出現。
  5. Corneal surfaces in eyes with regular astigmatism are thought to be toroidal surfaces. based on mathematical models for corneal surfaces before and after treatment, a corneal ablation model is given for such refractive errors as spherical myopia, compound myopic astigmatism, and simple myopic astigmatism. a similar corneal ablation model is also given for such refractive errors as hyperopia, compound hyperopic astigmatism, and simple hyperopic astigmatism

    採用超環面（ toroidalsurface ）建立起規則散光下的角膜曲面模型方程;定量研究了手術光學區屈光不正兩種通用的矯正模型，一種模型適用於單純近視、復性近視散光、單純近視散光的矯正，另一種模型適用於單純遠視、復性遠視散光、單純遠視散光的矯正;另外，作為影響手術效果的重要因素，提出了一種用於光學區直徑和過渡區寬度均可調節時過渡區角膜切削量的計算模型。
  6. ( 4 ) finally, the ginzberg - landau equation is considered. by the ansatz method, the chirped femtosecond solitonlike solution is given, and the stability of the solutions are studied in detail by linear stability analysis with variation method. also the long - distance stability of the ultrashort pulse and the interaction between the solutions are also discussed by numerical method

    （ 4 ）討論描述超短光脈沖傳輸的高階ginzberg - landau方程，給出該方程的啁啾類孤波解，並利用變分法解析地討論啁啾類孤波解的線性穩定性，同時研究這種類孤波解的長距離穩定性和相互作用。
  7. By performing fourier transformation, the relationship between the turbulent intensity of the particle and that of the carrier fluid was obtained which makes clear that particle size, specific gravity, velocity gradient, and the characteristic frequency of energy - containing eddies are four basic influencing parameters. it is proven theoretically that under certain conditions, the stream - wise and transverse particle turbulent intensities exceed those of the carrier fluid. based on the equations of two - phase flow, the presence of fine sediment suspension is shown to attenuate the turbulent intensity of the water

    通過對細小顆粒在剪切流場中運動方程的fourier分析，得到了顆粒脈動強度和流體脈動強度之間的定量關系，表明顆粒粒徑、顆粒密度、流速梯度以及紊動場含能旋渦的特徵頻率是影響顆粒脈動強度的主要因素，首次從理論上證明了在一定條件下，顆粒在縱、垂向的脈動強度均會超過相應的流體脈動強度，為已有的實測資料提供了合理的解釋。
  8. From the vehicle safety angle, it provides theory and technical support for the research on automatic drive, intelligent drive and traffic safety. this paper is based on the study of single car external flow field about the simulation on the ground boundary layer, the rotating wheels and the crossing wind load, and on the two cars running - in - row and overtaking maneuvers

    同時使用穩態超車的研究方法，利用了階背式、快背式和廂式mira模型代替轎車模型進行了不同車型超車過程的對比研究，利用定性和定量兩種方法研究了不同轎車車型在超車過程中的異同。
  9. The research of this dissertation is focused on how to solve the 3 - dimensional compressible navier - stokes equations by the implicit finite difference algorithm and to simulate numerically the unsteady subsonic and transonic viscous flows around rigid and elastic wings. on the base of them the aeroelastic characterictics of an elastic wing have been studied

    本文的主要工作是用隱式有限差分法求解三維非定常紊流n - s方程組，數值模擬剛性機翼及彈性機翼的亞、跨、超音速定常及非定常粘性繞流，並在此基礎上研究了彈性機翼的氣動彈性問題。
  10. It can be regard as the theoretical basis to optimize the drive. according to the gear meshing theory, the meshing equations, the contact line equations and tooth profile equations are given. it gives a base for 3d modeling the drive

    按照齒輪嚙合理論，推導出了滾錐齒超環面行星蝸桿傳動的接觸線方程、嚙合方程及各輪輪齒的齒面方程，為滾錐齒超環面行星蝸桿傳動的三維建模奠定了基礎。
  11. Using above methods to solve unsteady pressure distribution, coupling structure equations, the supersonic or hypersonic aeroelasticity is simulated in time - domain

    運用上述的非定常氣動力求解方法，耦合結構動力學方程，實現超音速、高超音速氣動彈性的模擬。
  12. In the third part, for a class of parabolic integro - differential equations we obtained ultra - approximation between u and its ritz - volterra projection which leads to a ultraconvergence alternating theorem

    最後，我們對一類拋物型積分-微分方程獲得了真解與ritz - volterra投影之間的強超逼近估計，並在此基礎上得到了一個強超收斂二擇一定理。
  13. We presents a detailed studied of the linewidth of parametric light in clbo - opo caused by the linewidth of pumping beam, off axis phase matching, divergence angle of pumping, time above threshold, high gain coefficient of nlo crystal, fluctuate of cavitylength, spontaneous radiation, according to the momentum and energy conversion laws, and the sellmeier equations of the clbo, we calculated curves of the type - i and type - ii compared with the bbo ' s

    根據能量動量守恆關系和clbo的色散方程，詳細分析了由於泵浦光的線寬、泵浦光偏軸泵浦、泵浦光的發散角、泵浦光功率超過參量光振蕩閾值一定倍數、高增益系數、有效腔長波動以及自發輻射引起的參量光線寬，並得到了與bbo晶體在類、類相位匹配下比較的理論曲線。
  14. The model from the input to the output of the piezoelectric traveling wave ultrasonic motor is established by synthetically using lagrange - maxwell equation, hertz elastic contact theory and coulomb friction theory, along with considering electromechanical coupling, influence of the interface force between the stator and rotor of the motor on the amplitude of the traveling wave inside the stator and dynamic contact friction friction force

    利用拉格朗日?麥克斯韋方程以及赫茲彈性接觸理論，庫侖摩擦理論，考慮機電耦合效應，定、轉子間界面力對彎曲行波的影響及其動態接觸摩擦力，建立了壓電行波超聲波馬達從輸入到輸出的機電耦聯系統的數學模型。
  15. It has been derived the design equation, the engaging condition and the formula of overriding friction torque. this has laid an important theoretical foundation for further reliability optimum design. then we can make the clutch have small size, light weight, less friction, flexibility of overrunning in opposite direction and smooth joint at high speed

    本文吸收了機械操縱式超越彈簧離合器的優點，在結構上進行了新的設計，在理論研究上進行了新的探索，推導出了設計方程、自激接合條件和超越摩擦力矩計算式，為進一步採用可靠性優化設計奠定了重要的理論基礎，使設計的離合器尺寸小、重量輕、摩擦損失小，反向超越靈活，在高速下接合平穩，並通過實驗驗證，說明其理論分析是正確的。
  16. Theory research based on overrelaxation : according to electromagnetic theory fundamental equation, boundary condition is analyzed, iterative formula is deduced, overrelaxation factor is selected and calculation program is composed. through calculation on varied parameter, a group of suitable parameter is found out. in the third chapter : the conclusion of theory research is verified through experiment

    理論研究使用超鬆弛迭代法：根據麥克斯韋電磁理論基本方程，建立了磁場浙江大學博士學位論文：行程傳感液壓缸基礎技術的研究分析數學模型，分析了邊界條件，推導了迭代公式，確定了鬆弛因子，編制了運算程序，通過對不同參數的試算，找到了一組有規律參數之間的關系。
  17. By solving the nonlinear schrodinger equation with perturbation method and computer simulations, we have demonstrated that super - gaussian sliding - frequency filters are more effective to reduce timing jitter than conventional sliding - frequency filters without sacrificing the signal - to - noise ratio

    通過求解非線性薛定諤方程和數值模擬，我們認為超高斯滑頻濾波器能很好地控制孤子的時間抖動和相互作用。
  18. The water quality respond relation of input - output measurements are established by systematic theory in this paper. according to the peculiarity of hydrology and the necessity of water quality inverse problem the multi - parameter inverse problem model based on ordinary differential equation is developed. the existence and uniqueness of the solution of the ordinary differential equation about two parameters or multi - parameter are to be proved. the unstability depending on errors between monitoring data and interpolation approximate data are analyzed and demonstrated. cubic spline interpolation function, the least two multiply and positive rule method are conjoined for obtained solution of multi - parameter. the results from this algorithm indicats its efficient to the multi - parameter identification in water quality modeling

    本文應用系統理論，建立了水質多參數輸入輸出之間的響應關系；根據河流水文水質變化特點和參數反問題的需求，建立了水質常微分方程多參數反問題模型.根據常微分方程參數反問題的數學理論，作者給出了兩參數和多參數水質常微分方程反問題的解的存在性、唯一性的理論證明過程和結論；還針對水質現有監測資料的測驗誤差和插值近似計算誤差造成參數反問題的不穩定性，將三次樣條插值函數、超定方程最小二乘法和正則化演算法有機地結合使用，成功地給出了水質參數反問題的穩定化演算法.最後給出了應用計算結果
  19. In the first algorithm, a solution to transcendental equations is converted into a solution to roots of a monic polynomial, and the latter can be fulfilled easily by using functions roots or solve in matlab. in the second algorithm, taking advantage of the property that the distance between solves in a circular domain and the center of the circle is less than that of solves out

    方法一：將對超越方程的求解轉化為對首一多項式的根的求解，然後利用matlab的roots或solve函數進行求解；方法二：利用圓形區域內超越方程的解與圓心的距離小於區域外的解與圓心的距離和fsolve函數求解方程時優先搜索離初值最近的解的特點，將圓心坐標值作為fsolve函數求解的初值，先求解出包含指定區域的圓形區域內的解，再從中找出指定區域內的解。
  20. The main studying contents and achievements in this dissertation are presented as follows. based on the analysis of the selective harmonic elimination pwm mathematical model, an equivalent newton iteration solving method about the switching angles nonlinear transcendental equation set is presented. the algorithmic convergence time is enormously reduced and the algorithmic convergence ability is highly increased

    本文的主要研究內容和成果如下：通過對單相特定消諧pwm數學模型的分析，提出了關于開關角非線性超越方程組的等效轉化牛頓迭代解法，極大地縮短了演算法收斂時間，提高了演算法的收斂性，為特定消諧pwm開關角的工程計算提供了新的方法。
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