速度脈動 的英文怎麼說

中文拼音 [sùdùmàidòng]
速度脈動 英文
velocity fluctuation
  • 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
  • 脈 : 脈名詞1. （動脈和靜脈的統稱） arteries and veins2. （脈搏的簡稱） pulse 3. （像血管的組織; 連貫成系統的東西） vein
  • 速度 : 1. [物理學] velocity; speed; blast; bat 2. [音樂] tempo3. （快慢的程度） speed; rate; pace; tempo
  • 脈動 : [物理學] [天文學] pulsation; pulsing; pulse; ripple; impulsive motion; pulsating; panting; loping...
  1. In this paper a kind of cardio - cerebral arterial bifurcation vessel hemodynamic characteristics are studied with the boundary element method, and the blood flowing velocity vector distributions have been calculated. in addition, the flow field distribution and the pressure on the particle surface are also calculated, when there is flow - round particle at the place of bifurcation, the move tendency of the particle is judged, the possible reasons of causing the atherosclerosis, thrombus, angioma are analysed

    本文用邊界元方法研究了一類典型心腦動脈分支血管中血液流動的流體動力特性，計算了分支血管血液流動的速度矢量分佈，同時計算了分支附近有多個顆粒狀繞流物時血液的流場分佈，及顆粒物所受壓力狀況，給出了顆粒物的運動趨勢，分析了引起粥樣斑塊病變、血瘤、血栓的可能原因
  2. Based on the model of safe following distance, the design blue print of system is presented in the text. using the multiple impulses horae rotate speed sensor to measure the vehicle speed and nanometer radar to measure the distance of own vehicle to frontal vehicle, and analyzing and judging collected information by at89c51 which is the control centre of the system

    本文在安全跟車模型的基礎上，提出了系統方案：採用霍爾多脈沖轉速傳感器測量汽車的速度，毫米波雷達測量兩車的距離和相對速度，利用at89c51作為信息採集單元的控制中心，對各種信息進行分析判斷，當行車距離小於報警距離時啟動相關的報警單元。
  3. Effects of ligating common iliac artery of one side on conduction velocity of sciatic nerve in rats

    結扎大鼠髂總動脈對坐骨神經傳導速度的影響
  4. The strong deviation and intermittence of the velocity and pressure fluctuations are found in the outer region about 3 ~ 4 times of the momentum thickness away from the mixing layer center, which are consistent with those observed experimentally

    與實驗結果相符合，本文研究發現，在混合層邊緣約3 4倍動量厚度附近，流向和橫向速度以及壓力的脈動都存在強烈的偏斜和間歇現象。
  5. Isc - pw idle speed control pulse width drive

    怠速控制脈沖馬達寬度驅動
  6. The coefficients of skewness ( cs ) and kurtosis ( ce ) have the feature of cs < 0, ce

    縱向脈動速度概率密度分佈的偏態系數0 0 ，峰態系數ce 。
  7. Research on wind is the precondition of wind response, then the section plane of static wind, intensity of onflow, psd function and correlativity of dynamic wind are involved in

    對風的研究是進行風振響應研究的前提，風的基本特徵包括平均風速剖面、湍流強度、脈動風功率譜密度函數、脈動風的空間相關性以及極端風速的概率統計特性。
  8. Although the flux per revolution of the optimized pumps is a little smaller than that of tatsuno combined pumps, other characteristics, such as fluctuation rate, maximum pressure angle and velocity fluctuation rate etc, are much better. the methods to cut gears are proposed in the theory for the practical produce in the future

    雖然，在體積相等的條件下，優化出來的外圓弧包絡線內嚙合齒輪泵的排量略小於tatsuno組合泵的排量，但其它性能（如：流量脈動率、最大壓力角、速度波動量）都更優。
  9. The detailed experimental investigation of the distribution and evolution of the mean velocity profile were executed. the signal of instantaneous velocity, the energy spectra of velocity and wave characteristics in the boundary layer have been analyzed

    對局部加熱的水平平板下表面邊界層內的時均速度的演化規律進行了詳細的測量，同時對速度脈動信號以及速度能譜進行了分析，並對邊界層內的波動特性進行了研究。
  10. Effects of fluctuating temperature of gas flow on the instantaneous devolatilization rate of pulverized coal particle

    氣流溫度脈動對煤粉顆粒瞬時熱解揮發速率的影響
  11. For this case, this kind of damper seems not applicable because it does n ' t reduce the strain at the ankle of bushing but increases it under some conditions

    而在含有速度脈沖近場地震動作用下，鉛合金減震器不但沒有降低瓷柱的應變，一些情況下還增加了瓷柱的應變。
  12. By inputting impulsive excitation, the dynamic simulation of vertical wheel / rail force, wheel / rail contact stress and accelerations of axle and bogie frame for resilient wheelset system is carried out and the results are analyzed and compared with the system of rigid wheelset. in additions, the stiffness of rubber is optimized

    其次通過輸入脈沖型激擾，對彈性輪對車輛軌道垂向耦合系統進行了輪軌力、輪軌接觸壓力和車軸及構架加速度的動力學模擬，並與剛性輪對車輛的計算結果進行了比較和分析，優化了橡膠的剛度。
  13. Artificial periodic disturbances are introduced to the outer field of turbulent boundary layer in an closed - circuit open water channel. statistical method is employed for analyzing the velocity - fluctuation - time - series. the effect of the disturbance to turbulent structure in boundary layer is studied

    在開口式循環水槽底部湍流邊界層外區中引入周期性擾動，對湍流場的速度脈動時間序列信號進行了統計分析，研究了湍流邊界層中周期性人工擾動對湍流結構的影響，結果表明高頻擾動的湍流中she - leveque簡稱sl湍流層次相似律成立。
  14. Abstract : in this paper, a principle and method of the speed pulse waveform sampling are introduced. its object is to study an effect of the turning factor on torbulence. test is done in the aerofoil fengwen. on design of the user interface, application of the timer and displaying way of a pape and continuity are specifically discussed. expermental results and analysis is showed at the last

    文摘:以翼型風洞為對象，著重介紹了變湍流度對翼型轉捩因子影響的速度脈動波形採集的原理和方法，重點對波形採集系統用戶界面的設計、定時器的應用、分頁顯示和連續顯示等技術進行了具體介紹，並給出了實驗結果及分析。
  15. Secondly, for the first time, by volume average concept and reynolds time - average method, a 3d quasi - single phase mass transfer model of distillation tray is deduced by considering the effects of velocity fluctuation, concentration fluctuation and volume fraction of gas and liquid on mass transfer. a source item sc for interphase mass transfer is considered. by applying conventional method of estimating the interphase mass transfer coefficient, a formula for sc is obtained

    其次，採用體平均概念、雷諾時均化方法結合塔板氣液相互作用的實際情況首次推導了考慮速度、濃度脈動項和氣、液相含率影響的塔板三維擬單相流湍流傳質模型，源相中考慮了氣液相間傳質項sc ，並運用化工中關于相間傳質系數計算的理論，推導了sc的表達式。
  16. Gravitic launchers are massive railguns where mass drivers trigger the initial acceleration before the ships gravitic field is pulsed to squeeze the missiles toward the enemy at enormous speed

    重力彈射器是大型的軌道炮，使用重力引擎獲得初始加速度，而後用船體的重力場脈沖以極高速度推動導彈飛向敵人。
  17. Characteristics of near - fault ground motion containing velocity pulses

    近斷層速度脈沖的地震動特性研究
  18. The outcomes indicate that under the effect of velocity pulse the increment of pgd ( peak ground displacement ) is greater than that of pgv ( peak ground velocity ), which has less influence on pga ( peak ground acceleration )

    結果表明：在速度脈沖效應下，地震動峰值位移增大值大於峰值速度增大值，而峰值加速度所受影響最小。
  19. In this paper, the effect of velocity pulse in near field ground motions is emphasized and the influence of velocity pulse to acceleration velocity and displacement in earthquake ground motions is analyzed by using simple impact modal

    摘要著重介紹了幾次地震中出現的近場地震動的速度脈沖特性，並利用簡化沖擊模型來分析速度脈沖效應對地震動加速度、速度、位移的影響。
  20. The fluctuation of the fibers " velocity and angular velocity was considered, too, and the influence of flow velocity on them was obvious : the fluctuation intensity of fibers " velocity on flow direction was larger than that on cross direction, while it was opposite for the fluctuation intensity of fibers " angular velocity

    同時又考慮了纖維速度和角速度的脈動，二者都充分體現了流體速度脈動的影響，且纖維速度的脈動在流向上的強度大於橫向，而其角速度的脈動在流向上的強度小於橫向。
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