short-period motion 中文意思是什麼

short-period motion 解釋
短周期運動
  • short : n 蕭特〈姓氏〉。adj 1 短的；短暫的。 （opp long）。2 矮的；低的 （opp tall）。3 短期的。4 簡短的...
  • period : n 1 時代；期；時期；期間；階段。2 〈the period〉現代，當代。3 周期；【地質學；地理學】紀。4 終結...
  • motion : n 1 運動 動 移動（opp rest）。2 （天體的）運行；（車、船等的）動搖；（機器的）開動 運轉；【機械工...
  1. In this thesis, it is used to design the control system of short period of the aircraft longitudinal motion

    文中利用定量反饋理論設計了飛機縱向短周期控制增穩系統。
  2. On the assumption that investment fund follows geometric brownian motion, the pricing model of a short - period insurance contract that is affected by its investment profit is established

    摘要在投資基金價格遵循幾何布朗運動的假定下，對短期保險合同，建立了在投資收益影響下的保費定價模型。
  3. The aircraft ' s longitudinal motion short period poles and long period zeros in right plan e may make the aircraft control system be not got by only using qft. so pole and zero assignment by state feedback is needed to change this circumstances and then qft is used to get the control system. simulink results are given to prove at the system meets the requirements.

    飛機縱向運動方程的短周期和長周期的右半平面可能存在零極點對問題，這對飛機控製造成不利影響，直接利用定量反饋理論不能滿足要求。本次論文首先進行短周期狀態反饋極點配置，然後利用定量反饋來解決這個問題。通過模擬分析得到滿意的結果。
  4. In addition, effects of several factors such as local site conditions, focal mechanism, epicentral distance and seismic magnitude on these parameters are discussed, and several significative results and conclusions are obtained. in all records there are about 1 / 3 vertical ground motion ’ s peak acceleration bigger than 2 / 3 of the corresponding horizontal one, so the action of vertical ground motion should not to be underestimated. vertical design response spectrum equals that the horizontal design response spectra times 65 % is probably unsafe when period is short, and suggest adopting different coefficients when at different periods

    本文基於對大量歐洲強震記錄的研究，分析了地震動豎向與水平向分量在峰值加速度、反應譜值、頻譜周期等參數方面的差異，以及這些參數與場地、震源機制、震級和震中距的關系，得到了以下有意義的結果和結論:在本文分析的地震記錄中大約1 / 3的記錄加速度峰值比大於2 / 3 ，豎向地震動分量的作用不可低估;在短周期，豎向地震動影響系數的最大值僅取為水平向地震動影響系數最大值的65 %是偏於不安全的，可以考慮按周期分段採用不同的折減系數;我國現行抗震規范中設計反應譜特徵周期的取值偏低，可能是偏於不安全的;豎向與水平向地震動分量卓越周期的比值在0 . 7 - 0 . 9之間，豎向設計反應譜的特徵周期應有單獨規定。
  5. The obtained results indicate that compared with the clay layer, the liquefied sand layer takes a decreasing effects on the short period component of the surface ground motion and the effects increase with increasing of the thickness 、 depth and width of the liquefied sand layer ; the liquefied sand layer takes a increasing effects on the long period component of the surface ground motion but the effect is not obviously ; to the input earthquake wave, the demarcation point of strengthens and weaken is about 0. 6s

    主要結論為:和同樣的粘土層相比，液化層的存在對地表上地震動的短周期分量主要起減弱作用，且減震效果隨著液化層埋深、厚度的增加而變強;對長周期分量主要起加強作用，但是效果不太明顯;對所輸入的地震波來說加強減弱的分界點所對應周期為0 . 6s左右。
  6. The long period attenuation relationship of acceleration response spectrum is developed using this database. the short - period attenuation equation is developed by using the analog strong motion records of western north america. by connecting the short period and the long period attenuation relationships together, the wide period ( 7 " = 0. 04 - 20sec ) attenuation relationships for horizontal acceleration response spectrum of western north america are obtained

    與用模擬式強震儀記錄所得出的美國西部地區短周期（ t = 0 . 04s - 4s ）加速度反應譜衰減關系結合，得出了美國西部地區水平向基巖寬周期（ t = 0 . 04 - 20s ）加速度反應譜衰減關系。
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