速度動力系數 的英文怎麼說

中文拼音 [sùdùdònglìxìshǔ]
速度動力系數 英文
speed power coefficient
  • 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
  • 力 : Ⅰ名1 （力量; 能力） power; strength; ability; capacity 2 [物理學] （改變物體運動狀態的作用） forc...
  • 系 : 系動詞（打結; 扣） tie; fasten; do up; button up
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 速度 : 1. [物理學] velocity; speed; blast; bat 2. [音樂] tempo3. （快慢的程度） speed; rate; pace; tempo
  • 系數 : [數學] coefficient; ratio; modulus; quotient; factor
  1. Given the initial conditions including ( 1 ) number density distribution in space which has the similar form to the present day ones, ( 2 ) both the power law and gaussian mass functions for clusters, and ( 3 ) two different velocity distributions which one has a constant dispersion and the other is described by the eddington formula, the dynamical evolution of globular clusters in our milky way galaxy is investigated in detail by means of monte carlo simulations

    本文採用與觀測結果具有相同形式的球狀星團空間密度分佈函數，在給定兩種球狀星團系統的初始質量譜（冪律的和對數高斯的）和兩種球狀星團系統的初始速度分佈函數（愛丁頓速度分佈函數和常數的速度彌散度）條件下，我們採用montecarlo的方法對球狀星團系統的動力學演化進行討論。
  2. By analysing the relationship among the parameters such as substrate, speed, tension, rotational speed, shape distortion of paper etc, this article put forward a control law to control the drive transmission roller in emery cloth and sand paper production line, the principle is based on hooke ' s law

    摘要本文根據彈性力學中的虎克定律，結合砂布砂紙生產特點，分析計算了生產線中基體、應變、速度、張力、轉速等參數之間的關系，建立了砂布砂紙生產線中傳動輥轉速（頻率）運動方程。
  3. ( 2 ) on the leading edge, the film cooling effectiveness at the zone immediately downstream of the cooling holes is affected by blowing ratio and mainstream reynolds number, while the effects are not important in the downstream zone far from the cooling holes. ( 3 ) on the front half of pressure surface, the effectiveness increases with decreasing blowing ratio at the downstream near the cooling row and it is contrary at the downstream far from the cooling row. ( 4 ) on the rear pare of the pressure surface, the effectiveness decreases with increasing blowing ratio and does not vary so much downstream in the cases of higher blowing ratio

    研究結果表明葉片吸力面端壁附近區域壓力系數分佈呈現出較強的三維特性，動葉吸力面尤其明顯；氣膜孔流量系數隨吹風比的增加而增大，在高吹風比情況下，流量系數逐漸趨于常數；在不同型面區域，冷卻效率分佈有較大的差異，而且吹風比與主流雷諾數的影響程度也不盡相同；低吹風比下，孔出口下游附近可以得到較好的冷卻，中、高吹風比下，冷氣射流在加速流動主流的作用下返回壁面進行二次冷卻，孔下游較遠區域可以得到較好的冷氣覆蓋。
  4. Based on the pull - out tests data between geogrids and expansive soil / sands arranged by the orthogonal table l9 ( 34 ), the following conclusions are reached : 1 ) the displacement - properties of pullout tests depend on the pullout speed. the law of factors " affecting degree, which influences the parameters between geogrids and soils in the pulling - out procedure, is obtained. with the concept of " equivalent pull - out displacement ( x ) " brought forward, the whole process of pull out tests is divided into two process - " main process ( when x 1. 0 ) " and " residual process ( when x 1. 0 ) ", and three stages - static friction resistance stage, slip friction resistance stage, and residual friction resistance stage

    基於正交設計表l9 （ 3 ~ 4 ）分別安排了影響因素與土工格柵膨脹土或砂土界面相互作用參數的拉拔試驗數據，獲悉： 1 ）拉拔試驗位移特性主要取決于影響因素中拉拔速率；通過分析並獲取影響因素對筋土界面相互作用參數的影響程度及其在拉拔試驗過程中的變化規律，提出了當量拉拔位移（ x ）的概念，並據此將拉拔試驗全過程劃分成「主過程（ x 1 . 0 ） 」和「殘余過程（ x 1 . 0 ） 」 ；且將影響因素對拉拔力或摩擦阻力系數的影響程度分成三階段（靜摩擦阻力階段、滑動摩擦阻力階段，殘余摩擦阻力階段） ； 2 ）不同（規范）定義的筋土界面摩擦阻力系數數值相差較大，但影響因素對摩擦阻力系數影響程度及其變化規律不會因不同（規范）定義而受到影響。
  5. Transformed the six - bar guide - bar mechanism realizing linear displacement in automatic instruments into a basic rotating guide - bar mechanism, established the mathematical model of velocity approaching constant by the classical approximate synthesis theory and the modern error theory, discussedthe influences of the existent region of main mechanismic parameters on kinematic and dynamic properties, analysed the theoretical transmission ratio error, advances systematic, complete steps and methods for dimensional synthesis of this mechanism with computer aided design

    將自動化儀表中實現線性輸出的六桿導桿機構轉化為基礎轉動導桿機構，應用經典的機構近似綜合理論與現代的誤差理論，建立了速度逼近常數的數學模型，討論了主要機構參數存在區域及對運動、動力性能的影響，分析了傳動比理論誤差，提出了系統完整的計算機輔助尺度綜合的步驟與方法。
  6. With the development of automobile industry and road transportation ， the traffic accidents happen every day in the world and become a serious society problem the vehicle collision accidents are over 2 / 3 times as much as all traffic accidents they cause a large amount of social infuence and serious economic loss therefore ， it is urgent to study vehicle collision accidents comprehensively and systematically ， and the research also is the academic foundation to analyze and deal with traffic accident it is difficult to authenticate car velocity after traffic accident to dig over locate witness is right way mechanics is avaid tool in this field it is important to establish math model and this is precondition to calculate vehicle velocity firstly on the basis of summarizing the research results ， this paper deeply discusses the calculating model to analyze the instantaneous motion state in the vehicle collision, the interrelation among the every moving mechanics parameters in the every phase of the collision secondly ， according to the collinear collision and two - dimension collision and the restitution coefficient ， the paper estabishesthe post collision movement models it proves that these models are correct and valid thirdly ， this paper try to research reconstruction of road traffic accident and put forward the method on it

    對交通事故的科學分析應是建立在正確的數學模型與計算機模擬技術基礎上的定量分析，其基本條件就是要有能正確描述事故過程中汽車狀態的數學模型，只有建立正確的數學模型，才能較準確地推定事故車輛的碰撞速度。所以建立正確地車輛碰撞模型和運動模型正是汽車事故再現的關鍵問題。本文首先在總結前人研究的基礎上，深入地研究汽車碰撞理論，分析了車對車碰撞作用瞬間狀態的計算模型及碰撞恢復系數與碰撞前、后速度的關系；其次，根據交通事故中最普遍的一維和二維碰撞的不同情況，採用恢復系數和滑動摩擦系數等概念，分別建立了碰撞后車輛動力學模型；第三，對汽車碰撞事故再現進行了初步研究，確定了車對車碰撞事故模擬計算和反推計算方法，並給出相應的模擬程序流程圖。
  7. The precondition of establishing mathematics model of torpedo turbine system in design condition is to fulfill the external conditions ( such as torpedo sailing speed and depth etc. ) and inner conditions ( such as turbine power and efficiency etc. ). after establishing mathematics model of torpedo turbine system in design condition, we compiled simulation program to compute all kinds of inner parameters of turbine engine include engine type, principal layout of turbine, inner structure of turbine and state parameters of gases

    首先分析設計工況時渦輪機動力系統，在滿足魚雷動力系統的各項外部條件（如魚雷航深、航速等）和內部條件（如渦輪機功率、效率，燃燒室壓力、溫度，轉子機械強度等）的前提下，建立起設計工況渦輪發動機的數學模型，編程計算並確定渦輪機內部機械結構和燃氣熱力學狀態各參數。
  8. The calculating formulas show that braking distance depends on initial braking speed, road dragging coefficient, mad slope grade, braking force increasing time ; and nothing to do with total mass of crane

    計算公式表明：決定汽車起重機制動距離的主要因素是制動初速度、路面阻力系數、道路坡度和制動力增加時間；汽車起重機總質量與制動距離無直接關系。
  9. Comparing with the current observations, which include the number density distribution in space, mass function, etc., the so - called standard modes for both the power law and gaussian cluster initial mass functions are selected among many runs of simulations. the deviation from the standard modes, which is resulted from the change of the parameter for the initial conditions, is discussed in detail. the discussion of the model parameters is also presented although they are adopted as the typical values based on previous work

    對應一定的初始分佈我們發現無論是冪律的還是對數高斯的球狀星團初始質量譜經過長時間的動力學演化都會得到和現在銀河系觀測到的球狀星團系統相符的對數高斯的質量分佈；動力學演化會明顯地改變球狀星團系統的空間密度分佈，靠近銀心區域的球狀星團瓦解得更多；經過動力學演化后的球狀星團速度分佈函數在靠近銀心的區域明顯得不同於初始分佈，初始擁有較大軌道偏心率的球狀星團更容易瓦解。
  10. Comparisons are made between present method and published results for a wall and non - wall sided circular cylinder in heave and sway. theoretical and numerical results for two - dimensional wave generated by rocker flap wavemaker are also given. in all cases the comparisons are excellent

    作為算例，文中分別計算了圓柱與水面直交和斜交時的水動力系數以及搖板造波問題的速度勢，計算結果與文獻值和理論值符合的較好。
  11. Through chaos optimization method embedded into the genetic algorithm. the algorithm with the combination the advantages of the genetic algorithm and chaos optimization method which need not the optimal problem function ' s differential and promote the ability of the genetic algorithm ' s locally meticulous search can be obtained with the faster convergence and the greater probability for the global solution. a chaotic sequence is inserted into the search procedure of genetic algorithm, which can overcome premature of the search by genetic algorithm and the speed of convergence is faster than standard genetic algorithm

    對遺傳演算法進行了理論分析，並且研究了遺傳演算法的設計與實現；利用混沌優化方法不依賴于梯度信息的性質，將其與遺傳演算法相結合，提出了一種求解連續不可微函數優化問題的混合遺傳演算法；基於對于符號動力系統的研究，利用混沌序列的遍歷性，將混沌序列引入遺傳演算法中，提出一種嵌入哈爾濱工程大學博土學位論文一混飩序列的遺傳演算法，該演算法有效地克服了標準遺傳演算法中的早熟現象，並且具有更快的收斂速度。 」
  12. In general, the upward amplitude curve " curvature is larger, and it changes quicker. on the contrary, the downward is smaller and slower ; because the flare force contains the square of the wave elevation velocity, it results in an difference between the flare force frequence and the associated moving frequence ; the flare force decreases the downward amplitude of heaving oscillations ; the speed of ship has an ignorant effect on the peak values of three calculated values, but there is an obvious effect on the oscillating frequence ; the wave amplitude has an effect on the ship motion, and there is an linear relation between the oscillating amplitude and the wave amplitude on the whole. by the way, there are some experiences and lessons according to the progress calculation : before the calculation of the ship motion, we should checkout the balance in a calm water firstly, namely, the whole displace of ship and the longitudinal position of the center of gravity must be consistent with the draft in calm water, or else, the calculation may show the " floating " phenomenon ; the mixed language programming has a lot of virtues, but it exists a fatal limitation - the debug of dll

    研究表明：在某些頻率范圍內相關水動力系數基本不隨吃水變化，只有超過某一頻率后水動力系數的值才會出現差異；在橫搖方向，水動力系數並沒有隨著吃水的變化發生規則變化，而是出現了波動現象；近船首剖面的水動力系數計算表明，水動力系數的波動非常大，並遠遠偏離了平均位置的水動力系數值，值的變化速率也不盡相同，總的看來，上振幅曲線曲率較大，變化較快，下振幅曲線曲率較小，變化較慢；外飄力和波面運動的速度的平方項有關，導致其振動頻率和相應運動方向的頻率不同；外飄力使升沉向下運動的幅值減小；船速對三個計算量的峰值影響甚微，但對振動頻率有明顯影響；波幅對船舶運動的影響是明顯的，船舶運動的幅值基本上和波幅成線性關系。
  13. The model includes three aspects ( 1 ) objective : aspect. regional leading industry choice ( 2 ) criterion aspect : comparative advantage criterion, industrial relationship criterion, technology advancement criterion, market potential criterion ( 3 ) norm aspect : location quotient, comparative labor productivity, comparative fund profit and tax rate, area ’ s added value proportion, industrial influence coefficient, industrial sensitivity coefficient, technology advancement speed, technology progresses contribution rate, growth rate, demand income elasticity

    模型共分三層:目標層? ?區域主導產業選擇;準則層? ?比較優勢基準、產業關聯基準、技術進步基準、市場潛力基準;指標層? ?區位商、比較勞動生產率、比較資金利稅率、區內增加值比重、產業影響力系數、產業感應度系數、技術進步速度、技術進步貢獻率、增長率、需求收入彈性。
  14. Supercapacitors, a new energy storage components between batteries and electrostatic capacitors, when work with batteries, can meet the high power out - put need of electric vehicles when starting - up or acceleration for their power density could be tens times higher than that of batteries

    超級電容是一種介於電池和靜電電容之間的新型儲能元件，其功率密度比電池高數十倍，能量密度比靜電電容高數十倍。利用超極電容和電池組成混合動力系統，能夠很好的滿足電動汽車啟動、加速等高功率密度輸出場合的需要。
  15. It adopts pc computer control, the high accuracy force value sensing test system, step - motor direct driving ball threaded screw methods it may set arbitrary numbers for the parameters such as gripped sample length stress rate, test times etc. the testing results would be output in forms of chinese characters reporting statistics through the printer

    採用pc機控制，高精度力值傳感測量系統及步進電機直接驅動滾珠絲桿方式.對夾持試樣長度.拉伸速度.實驗次數等參數均能任意設定.測試結果由印表機輸出
  16. It adopts pc computer control, the high accuracy force # 118alue sensing test system, step - motor direct driving ball threaded screw methods it may set arbitrary numbers for the parameters such as gripped sample length stress rate, test times etc. the testing results would be output in forms of chinese characters reporting statistics through the printer

    採用pc機控制，高精度力值傳感測量系統及步進電機直接驅動滾珠絲桿方式.對夾持試樣長度.拉伸速度.實驗次數等參數均能任意設定.測試結果由印表機輸出
  17. ( 2 ) the effect of rainfall splash intensity on hydrodynamic features of sheet flow indicated that, the former had a remarkable effect on the latter

    （ 2 ）雨滴打擊強度對坡面薄層水流水動力學特性的研究結果表明，雨滴打擊強度對坡面薄層水流水動力學特性（流速、水深、流態、阻力系數等）影響顯著。
  18. As a part of the civil 863 plans, two multiple - contact models for two kinds of braking system are built in the paper, in which contact fields are described as coons surfaces, initial velocity is programmed in fortran. the thermal - mechanical coupling braking processes are simulated for the first time by msc. marc, the general - used nonlinear fem software. time distributions of the velocity, the stress and the temperature of the components under various initial velocity and brake force are obtained, which offer theoretic gist to study the life of the wheel, the disc and so on

    作為國家行業863重大課題《鐵路機車車輛虛擬樣機系統》的一部分，本文在研究接觸問題和熱?機耦合問題數值方法的基礎上，採用國際上通用的非線性有限元分析軟體msc . marc建立了踏面制動和盤形制動主要部件的多體接觸計算模型，其中用解析方法描述，即用nurb曲線、高斯曲面來描述接觸區域，用fortran語言編寫定義初速度的用戶子程序，首次對兩種制動過程熱?機耦合進行了數值模擬，定量給出了主要制動部件在不同初速度、不同制動力下各個時刻的速度、應力和溫度的變化規律，為研究車輪、閘瓦以及制動盤壽命提供了理論依據。
  19. The pseudo - dynamic test of 1 / 3 - scale model six - story building assembled with hollow shear wall with seams. the internal forces, the deformation and the failure mechansm of the building under earthquake are studied. the rules of frequency, damping and response spectrum are studied. the characters of earthquake response such as structure displacement, interstory drift, action of earthquake, the amplificatory coefficient of acceleration and the rule of strain are discussed. at last, this paper presented the design method of this structure based on the aseismic style and put forward the construction

    進行了帶縫空心剪力墻結構六層樓房的1 3模型的擬動力試驗，研究了結構在水平地震作用下的受力特點、變形特徵、破壞形態等力學性能；得到了結構在不同受力階段的頻率、阻尼、反應譜等動力特性變化規律；討論了結構各樓層的水平位移、層間位移、地震力、加速度放大系數及構件應力分佈規律等結構地震反應特徵；指出了結構的抗震類型、薄弱層及薄弱部位；提出了多層帶縫空心剪力墻結構的第一階段設計方法和相應構造措施。
  20. In the paper, the computational results of all models are obtained, including 3 - d velocity field, 3 - d pressure field, and six aerodynamic coefficients. the results have good agreement with wind tunnel test

    文中得出了客車外圍流場的速度矢量圖和壓力分布圖以及六個氣動力系數，並將最終結果與風洞試驗結果進行了比較，結果吻合較好。
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