流態因數 的英文怎麼說

中文拼音 [liútàiyīnshǔ]
流態因數 英文
state of flow factor
  • 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...
  • 態 : 名詞1. （形狀; 狀態） form; condition; appearance 2. [物理學] （物質結構的狀態或階段） state 3. [語言學] （一種語法范疇） voice
  • 因 : Ⅰ動詞[書面語] （沿襲） follow; carry on Ⅱ介詞1 [書面語] （憑借; 根據） on the basis of; in accord...
  • 數 : 數副詞（屢次） frequently; repeatedly
  1. The additional flow is formed by the device of dentoid baffle, and the application of the device of dentoid baffle cooperated with a stilling basin has been investigated by systematic model tests. based on the research results, the hydraulic problems such as the characteristics of hydrodynamic pressure and cavitation on the head of the denotid baffle, the properties of flow under the condition that the device of denotid baffle is used with a stilling basin, the hydraulic computation about a stilling basin, the estimation of energy dissipation and its various affection factors, the mechanism and effect of energy dissipation, and distributions of velocity and pressure and aerating concentration, etc, have been analyzed ; the method and step of hydraulic design of device of denotid baffle by which the additional flow is produced has also been proposed

    文中利用齒墩設施實現附加射流，對齒墩設施與消力池聯合應用進行了大量的和系統的模型試驗，分析研究了中低佛勞德數條件下，齒墩墩頭的動水壓強及空化特性，齒墩設施與消力池聯合應用時的流態特性，消力池的水力計算，消能量的估算及其各種影響因素，消能機理和效果，消力池內的流速、壓強特性，摻氣濃度分佈等水力學問題，並提出了實現附加射流齒墩設施的水力設計方法和步驟。
  2. This paper first discusses the cause of crack formation and crack mechanism of high performance concrete. then carries out crack tests of three groups of concrete slabs using aggregate type, sand rate and dosage of fly ash as design parameter

    本文初步探討了泵送高流態混凝土的裂縫成因和開裂機理，並分別以骨料品種、砂率以及粉煤灰摻量為設計參數進行了三組配合比混凝土平板的抗裂試驗。
  3. At present, differential protection is often used as the main protection for traction transformers. however, the existing of certain factors, such as magnetizing inrush, over - excitation, ct saturation and mismatching of ct ratio, will result in that it is hard to distinguish state current and fault current, and differential protection misoperation or maloperation, then secure operation of electric railways system will be threatened

    目前，牽引變壓器通常採用差動保護作為主保護，但是在某些因數的影響下差動保護並不能準確的區分牽引變壓器內部故障或非內部故障，如故障電流與變壓器處于勵磁涌流、過勵磁， ct飽和及ct變比不匹配等情況下的狀態電流就很難準確的區分，可能造成保護誤動或拒動，從而危及整個鐵道電氣化系統的安全運行。
  4. And at this foundation through the dispersed domine analyse the paper makes a great emphasis on the application of computer aided design and simulation, then designs a series of apfc design and simulation software. this paper takes out a set of designation and simulation on base of actual circuit. the reliable result, output voltage and inductance current which are got from this software are the same as the actual value

    本文在對一系列apfc電路設計、模擬分析方法討論比較的基礎上，著重應用離散時域法進行了計算機輔助電路設計和模擬方法的應用探索，以此為基礎設計了pfcexpert功率因數校正電路設計、模擬軟體，針對實際電路給出了整個設計和模擬全過程，通過實驗驗證了該軟體所得到的精確穩態解、瞬態輸出電壓和電感電流，與實際電路輸出基本相同，所建立的電路模型重現了電路的運行過程，反映了電路的實際工作機理。
  5. Numerical models are frequently used to simulate water flow in hydraulic engineering. shallow water equations are basic governing equations with assumption of the velocity distribution uniformly in vertical, so they have some limitations on the simulation of some plane flows, such as wind - induced flow, curve river flow and flow nearby the submerged dikes. for above - mentioned reasons, extended shallow water equations are developed by introduction of momentum coefficient, correction of convection and bed resistance in equations of motion

    在水利工程中經常需要採用數學模型模擬水流的流態，淺水方程是進行平面流態模擬計算的基本控制方程，但因其忽略了流速垂線分佈的不均勻性，在模擬某些平面流態（如風生流動、河灣水流、潛壩等工程附近的流動）時存在一定的局限性。
  6. Carried out experimental research on conditions of different point heat source ( single, double and many heat sources ), and analyzed the influence of such factors as temperature of air - in, amount and distribution of inlets and outlets, heat emission quantity of heat sources and so on, on distribution of indoor air temperature 、 shape of plume flow 、 heat lamination height 、 ventilation efficiency 、 thermal comfort and so on

    考慮不同點熱源（單、雙及多點熱源）條件下地板送風的系統特性，通過實驗研究，分析了不同送風溫度，送排風口數量及位置，熱源發熱量的大小等因素對室內溫度分佈、羽流流態、熱力分層高度、通風效率、熱舒適性等的影響。
  7. According to the fact that power factor of low voltage power networks is very low in china and field bus technology is developing in the world, in order to enhance power factor of low voltage power networks, on the basis of central transmitting and controlling information among every compensation equipment, the author of this dissertation studies systematically the design principles of power factor dynamic compensation system. based on analyzing structure of control system at present, the author of the dissertation puts forward a distributed completely and multi - layer structure framework based on field bus technology and builds a power factor intelligent dynamic compensation system. the functions of compensation unit, intelligent node, host computer, are presented

    根據目前低壓電網用電負載功率因數偏低和國內外現場總線技術的應用現狀，立足於提高交流電機的功率因數，基於將每個補償裝置進行集中監控、信息集中傳遞的思路，本文作者在分析現有的控制系統體系結構的基礎上，提出了基於現場總線技術的全分散式多層控制系統的體系結構，構建了功率因素智能動態補償系統；對補償執行單元子系統、智能節點子系統、上位機子系統三部分進行了功能分析。
  8. And the influence of the heat removal in the cold and hot sides and electric current and some other factors which affect the cooling performance of thermoelectric refrigerator was also discussed by numerical calculation. furthermore, the influence of thomson effect on the performance of thermoelectric refrigerator in different refrigerating capacity and electric current was analyzed. and the work parameter of thermoelectric refrigerator was pointed out under the conditions that whether or not considering the influence of thomson effect

    通過數值計算詳細討論了穩態條件下冷、熱端傳熱系數及電流等因素對熱電製冷器製冷性能的影響，分析了在不同製冷量和不同工作電流下湯姆遜效應對溫度場的影響，指出了設計中是否要考慮湯姆遜效應的工況條件。
  9. As for the straight - labyrinth weir, the flow pattern character, the discharge capacity and its effecting factors are discussed ; the flow formula is deduced ; a set of discharge coefficient formulas are given basing on the former study ; and the efficiency is discussed

    系統討論了直線型迷宮堰流態特徵、過流能力及其影響因素；推導了直線型迷宮堰流量公式，並在前人研究的基礎上擬合出綜合流量系數的計算公式；討論了直線型迷宮堰的效率問題。
  10. Based on the 3 - d numerical simulation and the model test, many factors affecting the flow pattern stability and the hydraulic characteristics of the horizontal submerged jets are studied

    摘要採用數值模擬和模型試驗相結合的方法，分析了水股分層、坎高、出口體型和跌坎形式等因素對多股水平淹沒射流的流態穩定性和水力特性的影響。
  11. The mc controlled by this strategy not only achieves the dtc of asynchronous machine with excellent dynamic performance but also acquires good input currents and an adjustable power factor

    按這種策略進行控制的矩陣式變換器，既可實現對異步電機進行動態性能優良的直接轉矩控制，又可獲得良好的輸入電流波形以及可調的功率因數。
  12. On the basis of utilizing geometric conversion and modification principle of spur and helical gears, the mathematical model for geometric parameters and modification of overlapping coefficients of gear was established, and the calculation method of sliding frictional coefficients under elasto - hydrodynamic lubrication state was introduced, thus let the calculation method of meshing efficiency of gears be more coinciding with the practical application

    在運用直、斜齒輪幾何換算和變位原理的基礎上，建立齒輪的幾何參數和重迭系數修正的數學模型，介紹了彈流潤清狀態滑動摩擦因數的計算方法，從而使齒輪嚙合效率計算方法與實際應用更吻合。
  13. A raw ( read after write ) dependency loop model is developed in this paper to analyze the raw hazards of register operands in complex pipeline. based on this model, a " dynamic " data forwarding policy is suggested to reduce the pipeline stalls caused by data raw hazards. theoretical analysis and practical experiments both show that the average cpi increment caused by data raw hazards can be reduced effectively by the dynamic data forwarding strategy

    對于單發射結構的處理器，降低cpi值的根本途徑在於通過各種軟硬體技術減少流水線的停頓，本文構造了一個raw相關環路模型用於分析流水線中寄存器操作數的raw競爭現象，並提出了一種「動態」數據旁路優化策略，可以最大程度地減少復雜流水線中因數據的raw競爭而導致的互鎖停頓，理論分析和實測結果充分表明「動態」數據旁路機構可以有效地降低流水線因raw互鎖導致的平均cpi增量。
  14. Reactive power are calculated using the new algorithm. on the basis of analyzing different kinds of control strategies of var compensation, the paper applies the criterion of voltage and var to control switching and illustrates a improved mode of switching capacitor which can prevent the switched - capacitor from the impacting of instantaneous rush currents by means of zero - crossing triggering of scr components, and can realize auto - tracking var and auto - switching shunt capacitor bank. initial operating parameters are stored in information flash memory of the mcu using flash self - programming technique in order to decrease complexity of the circuit and improve stability

    高壓智能無功補償控制器以flash型16位單片機msp430f149為控制核心，採用了一種相角實時測量的新演算法，並在此基礎上計算出了功率因數、有功和無功，減少了運算量提高了精度；在分析了各種無功補償控制策略的基礎上，以母線電壓和無功功率復合判據控制投切，並提出一種改進的電容器投切方式? ?暫態投切控制晶閘管過零觸發，避免了電容器投切時的電流沖擊；穩態運行時接觸器替代晶閘管，實現無功補償的自動跟蹤和電容器的自動投切，解決了投切時的暫態電流沖擊和穩態時可靠運行的難題；控制器的原始運行參數採用flash自編程技術，將其保存在msp430f149片內的信息flash中，簡化了硬體電路，大大提高了系統的可靠性。
  15. The dq equivalent circuit model of three - phase three - switch boost type power - factor - correction is proposed firstly, the completely dc steady - state analysis and ac small - signal analysis are done and the dc operation points and ac transfer functions are acquired

    3 .首次提出三相三開關boost型功率因數校正的dq等效電路模型，並對其進行了完整的直流穩態和交流小信號分析，得到直流工作點和交流傳遞函數。
  16. Based on the state space equations of acim, a simulation model of the control system of acim is designed by using matlab / simulink. the results of experimentation and simulation indicate that the method of rotor flux oriented vector - control for ac the induction motor is of good dynamic and stability performance. at the end of paper, the conclusion and further research expectation are presented

    為提高系統輸入端的功率因數，減少注入電網的諧波，本文根據矢量控制的原理設計了基於功率因數控制的交流感應電機矢量控制的dsp試驗系統;並以感應電機狀態空間方程為基礎設計了在matlab / simulink環境下的感應電機模擬控制系統模擬模型。
  17. It shows that topograhy fractal demension is reseanable in describing change of topography. based on this model and after introducing runoff erosivity factor, sediment yield model of watershed model was setup by using multi - regression analysis method. vi ) the relationship model between watershed topography parameter and

    該關系模型以地形分維數為地形量化參數，以徑流侵蝕力代表徑流侵蝕土壤和搬運泥沙的能力，揭示了地貌形態因素和徑流侵蝕力與輸沙模數之間的內在關系;但此關系模型僅考慮了地形因子，還需考慮土壤、植被以及流域治理因素等綜合影響。
  18. With the serious problem of harmonics pollution to the power system, as well as the need of high performance of ac drive application, three - phase pwm rectifiers have been as active research topic in power electronics recently, due to the virtues, such as sinusoidal input currents, unity power factor, steady output voltage, good dynamics and bin - directional energy flow

    隨著電網諧波污染問題日益嚴重和人們對高性能電力傳動技術的需要， pwm整流技術引起人們越來越多的注意。三相pwm整流器可以做到輸入電流正弦、單位功率因數、直流電壓輸出穩定，具有良好的動態性能並可實現能量的雙向流動。因此， pwm整流器成為當前電力電子領域研究的熱點課題之一。
  19. The optimal combination among structural factors was obtained through experimental results. in addition, which experimental factor has significant influence on the exponent of flow state and flow rate of these emitters was analyzed. finally, several regression models describing the relationship between flow rate and structural parameters of flow passage were set up under the condition of certain flow passage length and 10m working pressure

    根據實驗結果分析了各因素之間的最優組合，分析了各因素對滴頭流態指數、滴頭流量的影響顯著性，並在流道長度一定的情況下，建立了10m工作水頭下滴頭流量與流道結構參數之間的模型。
  20. The main distinct points are : the development of virtual press sensor and virtual fuel flowmeter for simulating the fuel system status data, the digital signal processing for the sps, and the diagnosis method - system status factor fault diagnosis

    主要特點在於：利用計算機技術，開發了虛擬壓力、流量傳感器來模擬燃油系統的實時狀態數據；對信號的分析處理採用數字信號處理技術；提出了一種故障診斷方法? ?燃油系統狀態因子診斷法，並進行了實驗驗證。
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