振蕩流動 的英文怎麼說

中文拼音 [zhèndàngliúdòng]
振蕩流動 英文
oscillating flow
  • 振 : 動詞1. （搖動; 揮動） shake; flap; wield 2. （奮起） brace up; rise with force and spirit
  • 蕩 : Ⅰ動詞1 （搖動; 擺動） swing; sway; wave 2 （無事走來走去; 閑逛） loaf; wander; roam; loiter; go a...
  • 流 : Ⅰ動1 （液體移動; 流動） flow 2 （移動不定） drift; move; wander 3 （流傳; 傳播） spread 4 （向壞...
  • 流動 : 1. （液體或氣體移動） flow; run; circulate 2. （經常變換位置） going from place to place; on the move; mobile
  1. The combustion process cannot couple to the feed system unless a flow oscillation exists.

    不存在流動振蕩，燃燒過程就不可能與供應系統耦合。
  2. A perturbation in pressure at the upstream end of the feed system could result in sizable oscillations in flow rate and chamber pressure.

    供應系統上游端的壓力擾動可導致相當的流量和室壓振蕩。
  3. Principal conclusions were drawn as the following : the non compatibility of pressure or velocity of the gas on both sides of the contact surface is the cause of the formation of shock wave ; the heating effect of reflective shock wave to driving gas during charging or exhausting process is the internal mechanism of peak oscillating effect, and all the factors that influence the formation and the running of the shock wave will influence the peak oscillating frequency, cooling effect

    主要結論如下：熱分離機內激波形成的原因是射氣瞬間接觸面兩側壓力和速度不相容；峰值振蕩效應的內在機制為反射激波對充氣階段的驅動氣或低溫排氣的加熱，凡是影響激波形成及運動的因素都將對峰值振蕩頻率、冷效應及熱效應產生影響；當充、排氣時間比為0 . 1763時，最佳射流激勵頻率出現在高階峰值振蕩頻率上。
  4. The over - current relay works to protect oscillation tubes and rectifier, when the current exceeds its limits. frequency deviation caused by faulty operation is also prevented

    當電流超過限制值時，過負荷電流繼電器自動保護振蕩管和整流器，同時可以避免由不當操作所引起的頻率漂移。
  5. In this dissertation, the pulse jet style, the influence on the shock wave, the flow in the tube and the cooling effect was deeply studied theoretically and experimentally. the influence of the pulse jet style on the forming of shock wave and the shock wave intensity was explored. the initial disconnection style in oscillating tube vented and the initial disconnection breakdown was proposed by different pulse jet style

    本文對脈動射流的型式及其對激波、管內流動及冷效應的影響進行了較系統的理論和實驗研究，主要包括:探討了脈動射流的型式對形成管內激波形成及激波強度的影響，給出了不同脈動射流的型式下振蕩管開口端初始間斷的類型，對初始間斷進行了分解，導出了包含進氣、排氣參數及工質物性參數的管內入射激波馬赫數mj的表達式，給出了管內激波形成的三種原因及其所對應的脈動射流型式和具體的工作狀態。
  6. During the circuit design, the author analyzed the basic principle of the direct current motor, pwm control, h - bridge power driver, and two control techniques of h - bridge power drive circuit, designed its general structure, so the feasibility of the design is confirmed. then, reference, oscillator, power dmos gate drive circuit ( charge pump, bootstrap ), and dead time generation circuit are designed and analyzed in the sub - circuits. a current - controlled oscillator is presented in this thesis

    在電路設計中，作者介紹了直流電機的工作原理和數學模型、脈寬調制（ pwm ）控制原理、 h橋電路基本原理和h橋功率驅動電路的兩種控制模式，設計了驅動電路的總體結構，給出了電路的功能模塊，確定了設計的可行性，然後在子電路模塊中，重點分析設計了基準源電路、振蕩器電路、高端功率管柵驅動電路（電荷泵及自舉電路） 、低端功率管柵驅動電路和死區時間產生電路。
  7. The coupling from the pulse jet in the nozzle to the unsteady flow in the tube was discussed. and the relations between the parameters of gas charge and discharge, structure, working, flowing in tube and ideal cooling efficiency were established. the theory foundation of the influence of pulse jet on the flowing in the tube and characteristic would be built

    探討了脈動射流與管內非定常流動的耦合問題，建立了脈動射流有關參數如進、排氣參數、結構參數、運行參數等和振蕩管內流動參數及理想製冷效率之間的普遍聯系，為研究脈動射流參數對振蕩管內流動及其性能的影響打下了理論基礎。
  8. In the tidal estuary, the current is complex, and the flow is oscillatory. some experiential formulation has presented to calculate the vertical turbulent mixing coefficient. on the base of analysis of the hydrodynamic in the estuary, the theoretical equation, which describes the distribution of the space and time of vertical turbulent exchange coefficient, has developed, the equation has applied to the practice

    潮汐河口水流呈往復振蕩運動，本文在分析潮汐河口水動力特性基礎上，考慮了慣性力及重力等項的影響，通過理論推導得到潮汐河口垂向紊動交換系數的空間分佈及時間分佈的計算公式，以及垂向平均紊動交換系數的時間分佈的計算公式，並將其應用於潮汐河口的實際計算中。
  9. This inhibiting of flow oscillations adds stability to the combustion chamber.

    對流動振蕩的這種抑制作用提高了燃燒室的穩定性。
  10. A common example is shown in figure 11. 34 where the resonant circuit formed by an inductive power line and its decoupling capacitor may be excited by pulse currents drawn by the ic

    圖11 . 34所示的例子中，電源線的電感與去耦電容形成了諧振電路，晶元工作時產生的脈動電流，可能會激勵該電路（產生振蕩） 。
  11. There are five parts are as follows : in part one, the concept of switching function is introduced first to establish the nonlinear mathematical model of the induction motor variable frequency speed adjustment system which is fed by a sine pulse width modulated ( spwm ) inverter and takes the effect of the main magnetic circuit saturation into consideration, then the low frequency oscillation of the system is simulated according to the model. next, from the view point of energy conversion of the inverter - induction system, a criterion for the low frequency oscillation is proposed to determine whether the system is in low frequency oscillation which is judged by whether the interval of the negative current component of the inverter input current is more than 1 / fc ( fc is the carrier wave frequency of the inverter ) or not

    首先引入開關函數概念，建立了正弦脈寬調制（ spwm ）逆變器供電異步電動機，考慮主磁路飽和時的變頻調速系統整體數學模型，模擬系統的低頻振蕩；其次從逆變器-異步電動機系統能量轉換角度出發，提出通過檢測逆變器輸入電流中負電流的間隔時間是否大於1 / f _ c （ f _ c為逆變器載波頻率）來判定系統是否出現低頻振蕩；最後的實驗結果驗證了系統低頻振蕩建模和判據的實用性和正確性。
  12. The shearing layer is carried by the jet and the eddy is formed because of the instability and selective amplification of shearing layer which will propagate to the downstream. as the eddy impacts the impinging wall, a wave of pressure disturbance with certain frequency is induced. this wave then propagates to the upstream with high speed, and results in the overlap and amplification of the waves when the frequencies of them are close with each other

    當前噴嘴流束中的不穩定擾動波在穿過腔內的剪切層時，剪切層對其有選擇放大作用，形成渦環結構，剪切流動中渦環與碰撞壁撞擊，在碰撞區域產生壓力擾動波並向上游反射，在上游剪切層分離處誘發新的擾動的產生，當新擾動與原擾動匹配時，射流上游就被不斷地受到周期性激勵，腔內就產生流體自激振蕩並在後噴嘴出口形成脈沖射流。
  13. Firstly, the mechanism of self - excited oscillation was introduced. when the water jets from the inlet nozzle flows into the chamber, the momentum exchange between the jet and the liquid in the chamber occurs, thus to form an unstable shearing layer with certain thickness

    這是一種嶄新的強化換熱技術，流體脈動能夠造成換熱器全程的換熱強化，而且自激振蕩脈沖射流強化換熱技術本身是一種無功強化的方法，無需輸入外部能量來產生擾動。
  14. Development of noise prediction method on fluid induced pressure oscillations in cavities

    流動誘導空腔振蕩預測方法的改進
  15. 6 ) the correlation relationships of the mjo of daily 10m - wind ( v ) fields with that of sst fields are investigated by time - lagged svd method in the north pacific, south pacific and the tropical eastern pacific, and the basal process of v and sst mjo obtained in the three areas, which is a negative feedback process drived by drift and sensible heat under the conditions of shallow mld, is probably the maintaining mechanism

    6 ）用時滯svd方法分析了北太平洋、南太平洋、熱帶東太平洋區域10米高處逐日風（夕）場與sst場季內振蕩的相關聯系，得到了三區夕、 sst場季內振蕩的基本過程，它們是由漂流和感熱輸送推動的一個負反饋過程，它以薄mld為存在條件，可能是sst季內振蕩的維持機制。
  16. Numerical simulation of sediment in oscillatory flow over plane bed

    振蕩流底層懸沙運動的數值研究
  17. Research of unsteady aerodynamic force and oscillating flow field around cascade on shafting torsional vibration

    軸系扭振條件下葉柵振蕩流場研究和非定常氣動力的確定
  18. A3. initially, 12 types of commonly used equipment are included in the qpme system. they are : tracked bulldozer ; wheeled bulldozer ; tracked loader ; wheeled loader ; excavator ; generator ; mobile crane ; vibratory roller ; road roller ; asphalt paver ; vibratory compactor ; and power rammer

    答3優質機動設備制度初步會採用12類常見的設備，分別是: 1履帶式推土機; 2輪動式推土機; 3履帶式搬土機; 4輪動式搬土機; 5挖土機; 6發電機; 7流動起重機; 8振蕩式滾壓機; 9道路滾壓機; 10瀝青攤鋪機; 11振動式壓實機及12機動夯土機。
  19. Although the structure is simple, the unsteady fluid flow and the action of the wave in the tube are very complicated. so far, there exists a lot of problems need to investigate

    熱分離機的結構雖然簡單，但其振蕩管內部流動及有關過程的相互作用卻十分復雜，還存在許多有待解決的問題。
  20. Plastics - determination of dynamic mechanical properties - complex shear viscosity using a parallel - plate oscillatory rheometer

    塑料.動態機械性能的測定.使用平板振蕩流變儀測定復合剪切粘度
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