衰減指數 的英文怎麼說

中文拼音 [shuāijiǎnzhǐshǔ]
衰減指數 英文
attenuation index
  • 衰 : 衰動詞（衰弱） decline; wane
  • 指 : 指構詞成分。
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 衰減 : attenuation; decay; damping; reduction; rejection; weakening; deamplification; dampening; dying o...
  • 指數 : 1. [經] （比數） index number; index 2. [數學] exponent
  1. The frictional dissipation will introduce an exponential decay.

    摩擦耗散可導致指數式的衰減。
  2. It is easy to show, for an exponential decay, that the uncertainty in the life time is also z.

    很容易證明，對于指數衰減來說，壽命的不確定性也是z。
  3. A specimen which is much thicker than the penetration depth decays exponentially.

    一個比穿深透度厚得多的樣品，按指數律衰減。
  4. A dynamical system is built which is satisfied to lyapunov function whose energy function is penalty function in augmented lagrange multiplier method. the dynamical system is global stable, and its stable solution is the optimization solution of sub - problem in augmented lagrange multiplier method according to lasalle invariance principle. finally a complete optimization algorithm is developed

    針對這種工業過程，本文基於一個lqr的性能指標（本性能指標和衰減系數和自然頻率密切相關） ，提出應用本文提出的mmlaax優化演算法，對不確定工業過程進行魯棒pto控制器的設計，取得令人滿意的效果。
  5. Its main contributions include the following several aspects : firstly, the dissertation constructs the mathematic model of short baseline orientation determination using two geostationary satellites and analyses the applicable conditions of carrier phase interferometry. orientation determination precision is analysed in depth through both the conventional linearized method and monte - carlo computer simulation method, and the mathematical simulation results show that the linearized method has the shortcoming of fairly low elevation error analysis precision in high latitude area so as not to be very appropriate there. by analyzing the definite factors influencing orientation precision, the dissertation develops the concept of orientation dilution of precision, which uncovers the internal cause of exotic error behavior of bi - satellite orientation, and has important guiding significance for practical engineering applications

    本文系統地研究了基於「北斗一號」衛星載波相位干涉測量原理實現地球靜止雙星定向的相關技術，主要研究成果包括以下幾方面:首先，建立了利用兩顆地球靜止軌道衛星進行短基線定向的數學模型，分析了載波相位干涉測量的適用條件;採用傳統的線性化解析法及蒙特卡洛隨機模擬法兩種途徑對雙星定向的精度進行了詳細分析，數學模擬結果表明在高緯度地區線性化解析法由於俯仰角誤差分析精度略有下降而不太適合;在分析定向精度確定性影響因素的基礎上，提出了雙星定向精度衰減因子odop的概念，揭示了雙星定向誤差特殊表現的內部機理，對實際工程應用具有重要的指導意義。
  6. The useful life curves of gan - based blue led with al2o3 and sic substrate is fit single exponential function [ i = i1 + i2exp ( - t / ) ]. fron this function, we could get aging information of led about stable inteneity 1, decay intensity i2 and decay time. the novel method of evaluating aging properties of leds was put forward

    用單指數函數擬合了發光二極體的光衰減曲線[ i = i _ 1 + i _ 2exp （ t / ） ] ，這個關系式可以給出三個信息：穩定光強、衰減光強、衰減速度，提出了更加合理的評價led老化性能的方法。
  7. It is indicated in the test that the influence of loading to strain in the grout was about in the range of 5 ~ 6m, and very weak beyond 4m. the distributions of strain and bond stress in the grout are attenuated in the minus exponential rule

    試驗結果表明，加載對錨固段內的應變影響范圍大致在5 6m左右， 4m以外很微弱；錨固段注漿體內的應變與粘結應力分佈按照負指數規律衰減。
  8. The results showed : ( 1 ) the activity concentration of 95zr in water reduced quickly for subsidence, soil absorption, crucian intake, hornwort ' s absorption and adsorption. the dynamics of its disappearance accorded with binomial index regression law : cw. = 43. 36e - 1. 74t ' + 12. 85e - 0. 15 ( 2 ) the hornwort had stro

    結果表明: （ l ）從水體中引入的95zr由於沉降、土壤吸附、被魚體攝入和金魚藻的吸收、吸附作用使水體中的gszr比活度呈快速下降，其消失動態符合二項指數衰減規律， cw = 43 . 36e . ， . 74t + 12 . 85e一住『 」 。
  9. The density goes down exponentially with height.

    分子密度隨著高度的上升而指數衰減。
  10. Discharge the capacitor to a load after it has charged fully enough, and this produces an exponential decay pulse ( edp ) on the load

    通過開關式穩壓電源產生高壓直流，並控制該電壓對電容器進行充放電就能輸出指數衰減陡脈沖波形。
  11. Light launch conditions for long length graded - index optical fiber spectral attenuation measurements

    長距離分級指數光纖光譜衰減度測量的光發射條件
  12. After that, a fuzzy neural network control design with mixed performance was proposed aiming at different requirement to uncertainty, which separately compensate parameter uncertainties and external disturbances of robot system. this method can ensure the robust stability that under a prescribed attenuation level for the external disturbance, and also strengthens compensation to parameter uncertainties. the theory of hybrid force / position control is clear, however, it is difficult to implement

    針對實際應用中對不確定的不同要求，又提出了一種具有混合/性能指標的神經網路控制方法，對機器人不確定性（包括參數不確定性和外部擾動）分別進行補償，保證了系統對外界干擾在給定的干擾衰減度下具有魯棒穩定性的同時，還增強了系統對參數不確定性的補償。
  13. Spectral attenuation measurement of step index multimode optical fibers

    步進指數多模光纖的光譜衰減測量
  14. Global exponential stability of hopfield neural networks with time - varying delay and the estimation of decay rate

    神經網路的全局指數穩定性及衰減速度估計
  15. Life time of mn2 + in nano - zns was measured and was found to be close to that of the bulk materials. therefore the quenching centers quench the exciton but not the mn2 + ion self. 2. the increasing curves are different in film and ethanol colloids because there is diffusion process of quenching centers in colloids

    對薄膜樣品的熒光增強曲線的擬合表明，顆粒表面猝滅中心數目隨輻照時間的衰減函數是非e指數形式;同時考慮溶液中猝滅中心通過向顆粒表面的擴散而逐漸耗盡，很好地解釋了溶膠的增強曲線與固體薄膜的增強曲線的不同。
  16. The general attenuation law of ground vibration caused by heavy tamping is verified by spectrum analysis in this paper. moreover, the relationship between attenuation index and standard penetration number is created through combination analysis of vibration attenuation and surface wave propagation

    在此基礎上，通過面波分析，得出了場地介質衰減指數和表徵場地介質性質的參數?標準貫入擊數之間的關系，給出了表達式的一般形式。
  17. Integrated the monitoring data collected from the scene of blast with the correlative theory of earthquake wave, the blast vibration characteristic of this underground blast engineering and the influence that the blast vibration act on the ground buildings are analyzed. applied the method of duality linearity regression analysis, the propagation attenuational laws of blast earthquake wave in this underground engineering are gained by this software matlab. the analysis results indicat that the attenuational laws of blast earthquake wave are obvious diversity in the condition of difference distances

    結合採集到的大量爆破振動現場實測數據，並應用地震波的相關理論，分析了該地下工程開挖爆破的地面爆破振動特性及爆破振動對地面建（構）築物的影響;應用二元線性回歸分析法，通過matlab軟體計算得出該地下工程開挖爆破地震波的傳播衰減規律;分析結果表明，不同距離下的地面爆破地震波的衰減規律存在明顯的差異，近距離條件下爆破地震波的垂直方向分量衰減最慢，遠距離條件下垂直方向分量衰減最快，遠距離的爆破地震波的垂直方向分量和水平徑向分量的衰減指數均要比近距離相應的爆破地震波衰減指數要大。
  18. Finally, the problem of exponential filters for nonlinear time - delayed systems is considered. the filters designed by using the given approach can guarantee the stead - state and transient performance. by choosing suitable attenuation index, the perfect performances of filters can be attained

    四、研究了一類不確定非線性時滯系統的指數濾波器設計問題，提出了一種設計指數濾波器的方法，使用該方法設計的濾波器可以同時保證濾波器的穩態性能和暫態性能，通過選取濾波器的衰減指數，可以使得濾波器具有良好的衰減性能，模擬結果很好地驗證了所給出的方法。
  19. Based on priestley ' s evolutionary spectrum theory, an evolutionary process modulated by decline composite exponential function, is investigated as one kind of non - stationary excitation commonly encountered in engineering, the analytical solution of the response properties is gained due to proper simplification

    基於priestley的演變譜密度理論，對于工程中常用到的衰減指數函數調制的演變過程激勵，可以通過對結構響應的合理簡化，得到響應特徵的解析形式。
  20. It is shown that the optimal cost function will be decreasing if the terminal state of the controller lies in a certain set and the upper bound of the decaying coefficient satisfies some conditions

    指出當控制器的終端狀態處于某集合內且集結衰減系數的上界滿足一定條件時，其最優目標函數遞減。
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