攝動 的英文怎麼說

中文拼音 [shèdòng]
攝動 英文
[天文學] perturbation; disturbance
  • 攝 : Ⅰ動詞1 （吸取） absorb; assimilate2 （攝影） take a photograph of; shoot 3 [書面語] （保養） cons...
  1. Its biquadratic finite element approximation is considered and under the appropriately graded meshes, quasi - optimal order error estimates in the - weighted h ^ 1 - norm, up to a logarithmic factor in the singular perturbation parameter, are proved

    然後，考慮此方程在分層網格剖分上的雙二次有限元逼近，在-加權h ^ 1 -模意義下得到了至多相差一個關于攝動參數對數因子的擬最優階收斂的誤差估計。
  2. This paper studies the perturbation action of celestial bodies ' movement on the earth from the view of celestial mechanics, and furthermore analyzes the effect of celestial bodies ' movement on the natural slope stability due to phosphorus ore mining in mountainous areas

    摘要針對宜昌磷礦高陡山區地下開采對上部山體穩定性影響，從天體力學的角度探討天體運動對地球的攝動作用，並分析月球運動的引力對山區磷礦自然坡失穩的影響。
  3. Second, we discuss the influence of environmental referance potential temperture and thermal wind on mesoscale symmetric instability. we find the expression of disturbance stream function and criterion of symmetric instability by analytical method and conclude that change caused by environmental referance potential temperture with height and thermal wind make critical richardson number and disturbance critical half - wave length of symmetric instability larger, that is to say, they benefit the occurance of symmetric instability. third, we study nonlinear perturbation analysis of mesoscale vertical circulation and evolution equation by means of f - plane. non - hydrostatic balance and filiter model

    第二，討論了環境位溫與熱成風因子對中尺度對稱不穩定的影響。運用解析的方法求出了擾動流函數的表達式和對稱不穩定的判據，發現環境參考位溫隨高度的變化與熱成風因子使得對稱不穩定臨界理查遜數及擾動的臨界半波長都變大，這有利於對稱不穩定的發生。第三，採用f平面、非靜力平衡、濾聲波模式，討論了中尺度垂直環流非線性攝動分析及演變方程。
  4. Lunisolar gravitational perturbation

    日月引力攝動
  5. The error formulas of position and orientation for the octahedron parallel machine tool and the new type of parallel machine tool are set by using perturbation method

    利用攝動法得出了八面體並聯機床和新型並聯機床的位姿誤差關系式。
  6. Venus, earth, and other planets also perturb mercury's motion.

    金星，地球和其他行星也使水星的運動受到攝動。
  7. Satellite perturbance motion

    衛星攝動運動
  8. In the positioning servo - system, which generally is configured by the d. c. pulse width modulator ( pwm ) velocity governing system and position servo - loop, the parameter perturbance of pwm velocity loop really exist by reason of such as the load behavior ; power voltage supply ; operating setting value, etc. 1, 2 ， and it cannot be ignored. by using the identification technique to form the mathematical model of the system, authors have confirmed the facts. therefore, to design the discrete sliding mode controller ( dsmc ) of the positioning servo - system, the perturbed parameters value bounds of the pwm velocity loop, which is as the controlled plant of position servo - loop, should be accounted. consequently, the design principle of dsmc for accounting system with parameter perturbance is proposed by the authors. the proposed method can ensure the stability of system with parameter perturbance and the behavior of non - overshoot, fast precise positioning. in order to reveal the effects of the design method, the comparative research work is done by the authors. also, it has been tested in an industrial experiment, the results proved it is satisfactory

    由直流脈寬調速系統（ pwm ）和位置環構成的定位系統中，速度環的參數隨負載特性；電網電壓；給定工況而攝動是不容忽視的.作者通過系統辨識建模也證實了這一事實1 ， 2 .因此在設計位置環的離散滑模控制時，必須針對速度環（即位置環的控制對象）的參數攝動范圍採用「對象參數攝動離散滑模控制器的設計方法」 ，以確保系統在參數攝動時的穩定性和快速、無超調、準確定位的優良動態品質.為剖析該設計方法的控制效果，本文作了對比性研究，並將該設計方法用於工業試驗中，取得了滿意的結果
  9. Planetary perturbations make the earth's orbit about the sun irregular.

    行星的攝動使得地球繞太陽的軌道是不規則的。
  10. One of the earlist and certainly the best-known photographer to record action detail was eadweard muybridge.

    最早的、無疑也是最著名的一位拍攝動作細節的攝影家是埃德沃德邁布里奇。
  11. In particular, the stability for riesz basis, bessclian frame, riesz frame is provable if they are acted by a invertible opetator respectively

    特別， riesz基、 besselian框架、 riesz框架，投影法可行框架在相似意義下具有穩定性第三節研究含riesz基框架的攝動
  12. Using exponential trichotomy and the local geometrical expressions ofinvariant manifolds, the conditions are given for the persistence andtransversality of orbits situated in a heteroclinic manifold withequilibria undergoing transcritical bifurcations

    本文應用指數三分性和不變流形的局部幾何表示方法，給出異宿流形上的軌道當兩個奇點經歷超臨界分支和攝動時保存和橫截的條件
  13. Thirdly, an ideal satellite orbit is simulated, and on this foundation, we establish some typical simulation and testing circumstances. lastly, after simulation in the simulation and testing circumstances, we compare the performance of ukf and ekf. and then, based on the outdoor experiment of the vehicle, an analysis and contrast between our simulation results and commercial data process software is carried out, and the conclusion is obtained

    首先在第三章提出的目標運動模型的基礎上建立了系統狀態方程;其次簡要分析了衛星導航系統中的各類誤差，建立了基於偽距觀測量的系統觀測模型;第四節利用yuma格式歷書數據模擬了未受攝動影響的衛星軌道，並在此基礎上建立了幾種典型的動態模擬測試環境;第五節為模擬分析和比較，先對ukf演算法和ekf演算法在動態模擬測試環境中進行了模擬比較，然後針對外場試驗，對非線性濾波獲得的定位結果與商業軟體進行了分析比較，並得出結論。
  14. So the model is more integral and accurate in describing the performance of heat and mass transfer in the adsorbent bed than the traditional mathematical model. 4. pens ( perturbational exponential numerical scheme ) is adopted to ensure the successful solving of the mathematical model and the reliability of results

    採用攝動精確數值解格式（ pens ）來求解數學模型中的主要控制方程，並且考慮到控制方程的非定常性，對原pens格式進行了非定常變換，保證了數學模型計算的成功和結果的可靠性。
  15. Based on the normal form obtained above, a global perturbation method is utilized to give the analysis for the global bifurcations and chaotic dynamics of the rotor - ambs system. the global bifurcations analysis indicates that there exist the heteroclinic bifurcations and the silnikov - type homoclinic orbit in the averaged equations

    利用全局攝動法研究了電磁軸承-轉子系統的全局分叉和混沌動力學，利用數值模擬方法分別對平均方程和原方程進行了分析，得到了的描述系統混沌運動的相圖和波形圖，從而驗證了理論結果的正確性。
  16. The fundamental ideas and methods of this paper are also illuminated in this chapter. in chapter two, a one - dimensional and semi - closed shallow sea mode is studied. the approximate analytical expressions of the water level at the top of the bay induced by the nonlinear interaction between the storm surges and the astronomical tides are obtained by using the perturbation method

    在第二章里，研究了一維半封閉水域中的非定常風暴潮與天文潮非線性相互作用的問題，用攝動方法求出了具有實際意義的海灣頂部增水水位的一階近似解析表達式，並給出了增水過程曲線。
  17. Using the perturbation transfer matrix method as well as the tested data in the laboratory, the 1st and 2nd order perturbed identification of dynamic parameters of the rotor of a boiler pump is made

    摘要利用攝動傳遞矩陣法，結合實驗室的試驗，對某電站鍋爐給水泵轉子的動力學參數進行了一階和二階攝動識別。
  18. Numericaj results are presented by a majss of tables and figures. in the second part, we propose direct perturbation methods of eigensensitivity ana1ysis a defective nlatrix for three different cases

    在第二部分中，我們給出了在三種情形下虧損矩陣的特徵靈敏度的直接攝動方法。
  19. It is possible that this individual was disorientated from disease or perhaps even from the oceanic perturbations associated with the rapidly approaching typhoon koni

    可能該絳鯨魚因患病，或因臺風天鵝迅速逼近所做成的海洋攝動而迷失方向。
  20. Atmospherical drag perturbation

    大氣阻力攝動
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