first-order equation 中文意思是什麼

first-order equation 解釋
一階方程, 一次方程
  • first : adj 1 最初的，最早的。2 最上等的，第一流的。3 基本的，概要的。4 高音（調）的。n 1 最初，第一；第...
  • order : n 1 次序，順序；整齊；（社會）秩序，治安；狀況，常態；健康狀態；條理；會場秩序；議事程序，日程；...
  • equation : n. 1. 平衡，均衡；平均，相等。2. 【數學】方程式，等式。3. 【天文學】（時）差；均分，等分。4. 【化學】反應式。
  1. The riemann - hilbert problem for first order linear elliptic complex equation with parabolic degeneracy is dealed with here

    討論了一階退化橢圓型復方程的riemann - hilbert邊值問題。
  2. A class of the first order nonlinear hyperbolic equation

    一類非線性一階雙曲方程
  3. The motion of plunger of oleo damper excited by colored gaussian noise with exponential correlation time is governed by first order nonlinear differential equation

    摘要油液阻尼器受指數型高斯色噪聲外激勵時，活塞在油腔內的運動可用一階非線性動力學方程描述。
  4. For the regular curves, we find two killing fields for the purpose of integrating the structural equations of the p - elastic curves and express the p - elastica by quadratures in a system of cylindrical coordinates. for the star - like affine curves, we solve the euler - lagrange equation by quadratures and reduced the higher order structure equation to a first order linear system by using killing field and the classification of linear lie algebra sl ( 2, r ), sl ( 3, r ) and sl ( 4, r ). we solve the centroaffine p - elastica completely by quadratures

    對于正則曲線的情形，我們發現了兩個用於求解p -彈性曲線的結構方程的killing向量場並用積分將p -彈性曲線在一個柱面坐標系中表示出來，而對仿射星形曲線的情形，我們用積分方法解出了歐拉-拉格朗日方程，利用killing向量場及線性李代數s1 （ 2 ， r ） 、 s1 （ 3 ， r ）和s1 （ 4 ， r ）的分類將高階結構方程降為一階線性方程，因此我們用積分完全解出了中心仿射p -彈性曲線。
  5. Through the analytic continuation of first order perturbation function in the - plane, we have that the integral path of dispersion equation should use the landau path

    。通過將一級微擾函數在整個復頻率平面上解析延拓，得到色散方程中的積分路徑應採用landau積分路徑。
  6. The first order weakly - guiding approximation for the eigenvalue equation of hybrid modes in a step - index optical fiber

    階躍光纖中混合模式特徵方程的一階弱導近似
  7. A simple method of solving first - order indefinite equation

    一次不定方程的簡易解法
  8. The finite element equation for linear and nonlinear panel flutter analysis using the triangular three nodal mindlin element ( min3 ) which considers the first order shear strain in the plate is formulated

    （ 3 ）使用三結點三角形mindlin板單元（ min3單元）推導了壁板熱顫振的有限元方程。
  9. According to elastic mechanics theory and langrage equation, the first order shape function dynamic equation of tension weight of belt conveyor is derived, and the four series of experienced formulas is established, which provide theoretical instructions for determining the location of tension weight and the depth of concealed pit. 1fig., 2tabs., 5refs

    根據彈性理論和拉格朗日方程，導出了帶式輸送機平衡錘的一階模態動力學方程，求出了4組便於估算平衡錘振幅的經驗公式，該經驗公式為平衡錘的靜平衡位置及暗井深度的確定提供了理論指導.圖1 ，表2 ，參5
  10. Ordinary differential equation, first order differential equations, 2nd order differential equations, power series solution of differential equation, laplace transform, fourier series and transform, matrix, eigen value problem, partial differential equation

    常微分方程式、一階微分方程式、二階微分方程式、微分方程式級數解、拉氏轉換、復利葉級數與轉換、矩陣、本徵值問題、偏微分程式。
  11. Conservation law of mass, the state equation for ideal gas 、 thermodynamic equation and flow rate equation are used to establish first order differential mathematic model, and a special investigation on mass flow rate coefficient for different components are carried out to make the model more accuarate

    從模擬和實驗兩個方面進行研究，著重於把ameset和客戶化定製兩種方法結合起來使用，利用質量守恆定律、理想氣體狀態方程、熱力學方程、流量方程等建立一階微分數學模型，並配以amesim平臺對所建立的模型進行進一步的系統模擬驗證。
  12. Abstract : the digital pid control equation in microcomputer - based control systems is introduced. the effects of the technologies of digital smooth filtering ， first order recurrence filtering and dynamic compensation for improving the control features and enhancing the control accuracy are emphasized. the results of simulation test are illustrated

    文摘:介紹了微機控制系統中的數字pid控制算式，重點分析了數字平滑濾波、一階遞推濾波和動態補償技術在改善控制性能、提高控制精度中的作用，給出了模擬實驗的結果圖。
  13. Oscillation of unstable type first order difference equation with continuous variable

    連續變量不穩定型一階差分方程的振動性
  14. The rule of degradation follows the first - order kinetic reaction equation

    馴化污泥對石油的降解規律遵循一級反應動力學方程。
  15. And beginning with a perturbed nls equation, using a multi - scales perturbation expansion, we get the zero order and the first order equations, discuss the eigenstates of the operator in the equations, induct relevant " derivative states ", form the completeness of the bounded eigenstates of the associated operator in li space, and expand the corresponding parameters in the closure, get a series evolution equations of the coefficients in the expanded formulas, find the first order approximate solution by researching the evolution equations. this paper also gives the basis of this method - the completeness we have formed and the singular perturbation technique

    ） dinser方程的求解問題，討論了自伴運算元的本徵函數的正交性和完備性，介紹了尋求微分方程的近似解常用的攝動方法，並從帶有某種擾動項的nls方程出發，利用多重尺度的攝動方法得到了方程的零級近似方程和一級近似方程，通過對近似方程中運算元的特徵態的討論，引入適當的「導出態」 ，建立了運算元在l _ 2空間的特徵態的完備性。
  16. Abstract : a new variable structure model reference adaptive control ( vs - mrac ) scheme is proposed in this paper. by transforming a relative degree one system into a first - order - like differential equation, it is shown that the spr ( strictly positive real ) assumption for reference model or its modified form ( if plant relative degree n * > 1 ) can be removed and the tracking error can converge to zero in finite time or a small residual set

    文摘:提出了一種可具有非嚴格正實參考模型的變結構魯棒自適應控制方案，可去除變結構模型參考自適應控制中普遍要求參考模型為嚴格正實或當相對階大於1時參考模型經補償后為嚴格正實的假設.在此基礎上提出的變結構控制律可保證跟蹤誤差在相對階為1時于有限時間內收斂到零，而當相對階大於1時則可使跟蹤誤差收斂到一個殘差集內
  17. This article gives a new definition of complex integrating factor about first order ordinary differential equation and a new existence theorem of a type of integral factor and calculation formual, and the resuct in this paper amplifies the conclusions in the relevant reference

    摘要本文推廣了一階微分方程復合型積分因子的概點，給出了復合型積分因子的存在定理和計算公式，所得結果涵蓋並推廣了相關文獻的結論。
  18. The numerical method to solve the equation for spatial amplification theory is described in detail. deduced first - order system equations from spatial instability theory and its eigenvalue problem are solved and neutral lines varied with mach numbers are given

    運用穩定性理論的空間放大理論，建立穩定性方程，得到一個六元一階方程組，然後求解該一階系統，計算並得到不同馬赫數下的中性穩定曲線，基於此得到不同馬赫數下流場的臨界失穩點和穩定區域。
  19. The main research work involves : ( 1 ) based on first order ode ( ordinary differential equation ) approximation theory and hopf bifurcation theory, the nonlinear motion stability of the train is studied emphatically

    本文所做的主要工作有： （ 1 ）基於常微分方程的一次近似理論和hopf分叉理論，重點研究了列車（車輛）系統的非線性運動穩定性。
  20. A circuit containing either a single inductor or a single capacitor, which can be described by a first - order differential equation, is called a first - order circuit

    對於一個只含有一個單獨電感或一個單獨電容的電路，描述它的微分方程是一階的，故稱為一階電路。
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