速度反向 的英文怎麼說

中文拼音 [sùdùfǎnxiàng]
速度反向 英文
velocity reversal
  • 速 : Ⅰ形容詞（迅速; 快） fast; rapid; quick; speedy Ⅱ名詞1 （速度） speed; velocity 2 （姓氏） a surna...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 反 : Ⅰ名詞1 （方向相背） reverse side 2 （造反） rebellion 3 （指反革命、反動派） counterrevolutionari...
  • 速度 : 1. [物理學] velocity; speed; blast; bat 2. [音樂] tempo3. （快慢的程度） speed; rate; pace; tempo
  1. Heat convected, a mode of motion developed by such combustion, was constantly and increasingly conveyed from the source of calorification to the liquid contained in the vessel, being radiated through the uneven unpolished dark surface of the metal iron, in part reflected, in part absorbed, in part transmitted, gradually raising the temperature of the water from normal to boiling point, a rise in temperature expressible as the result of an expenditure of 72 thermal units needed to raise i pound of water from 50 to 212 fahrenheit

    燃燒所引起的運動形式之一-熱對流傳熱，不斷地加速度地從熱源體傳導給容器中的液體，由那凹凸不平未經打磨的黑色鑄鐵面把熱向周圍發散出去一部分反射回來，一部分被吸收，另一部分被傳導，使水的溫度從常溫逐漸升到沸點。這種溫度的上升可作為消費結果標志如下：將一磅水從華氏五十度加熱到二百十二度，需耗七十二熱量單位。
  2. The method proposed in this thesis do well in solving the problems of multi - damping - ratio - spectra simulation. it is convenient to obtain the pareto optimal solution set of the multi - object question by using implicit parallel genetic algorithms and the method can meet the practical needs for simulating ground motions coinciding with multi - damping - ratio - spectra in seismic design. the crossing rate and variance rate are important parameters of genetic algorithms which affect the rate of convergence, the adapting rate of cross and variation in this paper can auto - adapt and according to stand or fall of current sample, it assures the sample approach to the pareto optimal solution set in fast convergent speed

    較好地解決多阻尼比反應譜擬合問題；本文方法通過一次運行就能獲得一組具有集系特性的地震動，在擬合多阻尼比反應譜的人造地震波集系的模擬方面有傳統方法所不能比擬的優勢，產生的人造波或人造波集系可滿足工程抗震設計需要；在遺傳演算法中，交叉概率和變異概率是影響收斂速度的重要參數，本文採用的改進自適應交叉概率和變異概率，可以根據當前樣本的好壞程度來自動地選擇適當的交叉概率和變異概率，以保證演算法始終以較好的速度向pareto最優解集逼近。
  3. Our study shows that the optical potential of the diffracted light of the semi - gaussian beam is far higher than that of the evanescent - light wave, and its maximum normal velocity of the incident atoms can be far grater than that of the evanescent - light wave under the same parameters, so the blue - detuned semi - gaussian beam, as a novel atomic mirror, can be used to efficiently reflect atoms with a normal velocity of greater than 1 m / s

    研究表明，半束蘭失諧高斯光束衍射光場的光學勢遠大於消逝波光場的光學勢，在同樣的參數條件下，入射原子的最大速度也比消逝波光場的大，所以作為一種新穎的原子反射鏡，半束蘭失諧高斯光束可以被用來有效的法向速度大於1m s的入射原子。
  4. After analysing several kinds of light - weighting structures through ansys, hexagonal speculum structure is confirmed. in the aspect of the controling of speculum, the paper adopts the brushless dc motor which is partial assembled to drive the point speculum and the inductosyn as angle measuring component is selected, the ad2s80a the system is used to get directly angle and angular velocity. double closed - loop speed and position control is designed, as the pid control is the well - developed algorithm, which can achieve stable rotation and precise position control

    在指向反射鏡的擺動控制方面，採用低速性能好的分裝式直流力矩電機作為指向反射鏡的驅動電機，並採用感應同步器作為角度測量元件，運用軸角轉換器ad2s80a進行角度和速度的輸出，採用技術成熟的pid控制方案，進行速度和位置雙閉環控制，以實現指向反射鏡轉動速度的平穩性和位置的精確性。
  5. Then, we caculate the dynamic character of the reflective mtn cell with the optimized parameter, give out the distribution of velocity, twist angle and tilt angle at the midle of the mtn cell when switch on or off in consideration of the backflow

    並針對選定參數的mtn液晶盒作了動力學上的計算。文中分別了給出mtn盒在加電壓和撤電壓時，引流效應對反射率的影響，並比較指向矢，速度，中間層的傾斜角等參量分佈的情況。
  6. The negative sign describes the fact that this is always opposite to the velocity.

    這個負號表示這個力總是和速度的方向相反。
  7. The records we used are mainly from three parts : strong ground motion data before 1992 ' s ; data from scec ( south california earthquake catalog ) ; nsmp ( national strong motion project ). after we developed the attenuation laws, we analysis the attenuation characteristics for the pga and sa with different damping ratio. here we mainly concentrate on the effect of the distance and the magnitude

    在回歸出中小地震的衰減關系后，本文對峰值加速度（水平向與垂向） 、加速度反應譜（阻尼比分別為0 . 005 、 0 . 02 、 0 . 05 、 0 . 1 、 0 . 2 ）的衰減特性進行了分析，影響因素主要考慮了震級與距離這兩個方面。
  8. 2, the image of sn - wave velocity lateral variation is reconstructed in china continent by tomography method using 43646 sn rays

    2 、用了43646條sn射線反演得到中國大陸上地幔頂部s波速度橫向變化。
  9. 1, travel times of 91138 pn arrivals recorded from china and adjacent regional earthquakes are inverted in a tomographic study to map the lateral variations and anisotropy of pn velocity of the uppermost mantle

    1 、用91138條pn射線的走時反演出中國大陸上地幔頂部的p波速度橫向變化和各向異性分佈。
  10. The observer using the coupling of axial and lateral and having feedback of acceleration is investigated. this method can estimate the angle of attack and the sideslip angle synchronously. an optimization named extrem is applied to optimize the feedback plus matrix

    研究了採用縱橫向耦合且具有線加速度反饋的非線性觀測器方法，該方法能夠同時估計迎角和側滑角參數，並採用extrem優化方法對其反饋參數增益參數進行了優化設計。
  11. 754 horizontal - component digital broad - band records in western north america are processed. the acceleration response spectra are calculated and used as part of the database. the response spectrum values are estimated by the earthquake magnitude definition and are used as another part of the database

    將美國西部地區作為參考地區，對美國南加州地區的數字寬頻帶記錄進行了搜集與處理後作為觀測資料，共754條水平向記錄，與利用震級定義所估計的反應譜值一起，用統計回歸的方法建立美國西部長周期加速度反應譜衰減關系。
  12. 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。
  13. The results show that, in most samples there are some linear correlation between poisson ' s ratio anisotropy and p - wave velocity anisotropy ; while in some samples there are no significant correlation between them ; some samples even show totally opposite changes in poisson ' s ratio anisotropy and p - wave velocity anisotropy

    結果表明，在大部分樣品中泊松比各向異性與縱波速度各向異性有一定的相關性，但在有的樣品中泊松比各向異性與縱波速度各向異性沒有明顯的關系，甚至表現出完全相反的變化規律。
  14. First of all, the method of fredholm alternative is used to obtain the approximate solution of the first order for the bifurcating periodic solutions of a nonlinear system with delayed velocity feedback. the bifurcation direction and the stability of the bifurcating periodic solution are also determined

    首先，用fredholm擇一方法分析了一具有時滯速度反饋的非線性振動系統的hopf分叉，得到了局部分叉周期解的近似表達式，確定了分叉解的分叉方向及穩定性。
  15. In part iv, time forward observer is used to predict states of the slave. moreover, force, position and velocity feedback is proposed to design the system. feedback parameters are solved through linear matrix inequalities

    第四部分提出用時間前向觀測器預測從手狀態，用力、位置和速度反饋消除或減小時延對系統影響的方法，並對反饋參數的設計進行分析。
  16. The goal of this paper is to develop the long period attenuation relationships for horizontal acceleration response spectrum of rock site in china

    本文建立了我國水平向基巖長周期加速度反應譜衰減關系。
  17. Then the transform method and the digital broad - band data from china is applied to obtain the wide period attenuation relationships for horizontal acceleration response spectra of eastern china and western china in rock sites ( c, = 5 % )

    最後用常規的轉換方法，並加入我國158條水平向寬頻帶數字記錄，建立了中國東部和西部地區的水平向基巖寬周期（ t = 0 . 04 - 20s ， = 5 ）加速度反應譜衰減關系。
  18. 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。
  19. The numerical results show that the horizontal variation of response acceleration of gravity retaining wall is quite small since its lateral rigidity is large enough, the response at a given height level can be considered as the same, the maximum accelerations at different heights on the central vertical line can describe the distribution of earthquake load along the wall height in static analysis very well

    數值結果顯示，重力式擋土結構剛度很大，地震加速度反應在水平方向差異很小，可看作是同步的，可取中心線上各點最大加速度來描述靜力法中地震作用沿高度的變化規律。在沿墻高度方向，加速度分佈不是呈直線變化，比較復雜，總的變化趨勢大體一致。
  20. The expansion of the reaction products of detonating cylindrical charges is presented and analyzed with regard to the radial and axial mean velocities and the real expansion velocities as a function of time and distance

    對圓筒型裝藥發生爆轟后的反應物的傳播過程進行了研究，分析了軸向平均速度、徑向平均速度和實際傳播速度與時間和距離的函數關系
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