例句與造句

1. Simulations for identification of flutter derivatives of bridge section using the coupled - forced - vibration method
   橋梁顫振導數(shù)的耦合強迫振動仿真識別
2. A comparative study between time - domain method and frequency - domain method for identification of bridge flutter derivatives
   橋梁顫振導數(shù)識別的時域法與頻域法對比研究
3. The researcher also concludes that in the range of reduced velocity , the flutter derivatives equal to the function of it
   在折減風速的實用范圍之內(nèi)，顫振導數(shù)只是折減風速的函數(shù)。
4. The identification of flutter derivatives for bridge sectional model has long been a key issue in long - span bridge flutter and buffeting analysis
   長期以來，橋梁斷面顫振導數(shù)的識別都是大跨度橋梁顫抖振響應(yīng)分析中的重點和難點問題。
5. And the result shows that the self - excited loads and the flutter derivatives satisfying the linear relationship as to the streamline section - like thin plate
   結(jié)果表明對薄平板這一類近乎流線體的斷面，自激力與振動參數(shù)之間能較好地滿足線性關(guān)系。
6. It's difficult to find flutter derivative in a sentence. 用flutter derivative造句挺難的
7. 2 . a systematic test has been carried out to observe how the model actuating frequencies and amplitudes affect the flutter derivatives , and the effect is found to be quite minor
   通過系列試驗考查了模型驅(qū)動頻率和振幅對顫振導數(shù)的影響，驗證了驅(qū)動頻率和振幅對顫振導數(shù)影響很小。
8. While the flutter self - excited loads of a bluff section has a quality of obvious nonlinearity . and the application of flutter derivatives to self - excited loads of the bluff section is close to a linear relationship . 5
   而鈍體斷面的顫振自激力高次諧波分量較大，具有較明顯的非線性響應(yīng)特征，驗證了用顫振導數(shù)表示鈍體的自激力只是一種線性近似。
9. A test has been carried out on three typical bridges sectional models of flutter derivatives to find the general rules with the change of flutter derivatives of the bridges sectional model . and it has been discovered that this change depend on the torsional damping , an element closely relating to the h * 2 and a * 2 4
   通過對三種典型斷面顫振導數(shù)的測試，考查了各顫振導數(shù)隨斷面形狀的變化趨勢，說明了最主要的變化體現(xiàn)在與扭轉(zhuǎn)阻尼有關(guān)的h _ 2和a _ 2項。
10. The result of the experiment shows that the proposed forced vibration method device has the quality of stability and repetitiveness of the data , the wide range of the testable reduced velocity , the exactness of coupled and direct flutter derivatives . and it does not need to employ any complicated identification system to check it further
    結(jié)果顯示：本文提出的強迫振動法裝置具有試驗數(shù)據(jù)穩(wěn)定、數(shù)據(jù)重復性好、可測量的折減風速范圍寬、交叉項導數(shù)與對角項導數(shù)具有同等精度和不需要復雜的系統(tǒng)識別過程等一系列優(yōu)點。
11. As to the current problems existing in the identification for these flutter derivatives , the dissertation tries to trace the development in the identification for the past unsteady aerodynamic forces of long - span bridges . it also investigates the method for flutter and buffeting analysis and the flutter derivatives . based on the present methods used in obtaining the unsteady aerodynamic forces and flutter derivatives , and co - funded by a natural scientific fund from the nation and a key project fund from the railway ministry , the current research has attempted to develop a device which can be employed in the wind tunnel to test flutter derivative through a forced vibration method
    鑒于目前橋梁斷面顫振導數(shù)識別的水平和存在的問題，本文通過對大跨度橋梁非定常氣動力、顫振分析方法及顫振導數(shù)識別方法的回顧和評述，基于現(xiàn)有的非定常氣動力和顫振導數(shù)的測試方法，在國家自然科學基金與鐵道部重點學科基金的聯(lián)合資助下，研究開發(fā)了一套在風洞中采用強迫振動法測試顫振導數(shù)的裝置。