脈動水流 的英文怎麼說

中文拼音 [màidòngshuǐliú]
脈動水流 英文
fluctuating flow
  • : 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
  • : 名詞1 (由兩個氫原子和一個氧原子結合而成的液體) water 2 (河流) river 3 (指江、河、湖、海、洋...
  • : 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...
  • 脈動 : [物理學] [天文學] pulsation; pulsing; pulse; ripple; impulsive motion; pulsating; panting; loping...
  • 水流 : 1. (江河) rivers; streams; waters2. (流動的水) current; water flow; fluent; flow; [水文] stream current
  1. Numerical research on fins to alleviate draft tube surging

    設置消減壓力片后尾管數值解析
  2. Thirdly, the correlative coefficient is computed between the pressure fluctuation signal of draft tube and the displacement signal of upper guide bearing, the thrust bearing and the head cover, with this the conclusions on the shafts response due to pressure surge in

    並與模型尾管壓力試驗結果進行對比?結合模擬試驗以及力特性計算結果,全面分析?評定機組的實際運行狀況,劃定運行區域,為電站合理調度
  3. Water feeding framework takes electromagnetism water valve as administration component and is added relief valve for stabilizing hydraulic pressure ; the system has large, middle and small water valve that changes unlock combination of electromagnetically operated valve, which can get seven different water flux ; if it is necessary, it should adopt microseism water feeding that can make water feeding get stepless timing

    3加機構加機構採用電磁閥作為執行元件,加入調壓閥穩定壓,系統共設大中小三路加閥,變化電磁閥的開啟組合,可以得出7種不同的加量,必要時採用法,可使加達到無級調速。
  4. The characteristics of high pressure gyratory sprayed pumping discusses is presented, which is applicable in wide range of scope and ground layers, convenient for construction, long durability, wide source of materials. mechanism for subgrade strengthening : complex foundation of cement solid and earth between piles was formed by pulsant load of flowing pressure and spraying flow, water wallop, cavitation phenomenon, water wedge effect, extrusion force and air flow agitation etc so as to enhance foundation bearing force and reduce settlement and deformation

    高壓旋噴注漿技術具有適用范圍、適用地層較廣,施工方便,耐久性好,材料廣闊等特點;其加固地基機理主要是通過壓、噴射負荷、塊的沖擊力、空穴現象、楔效應、擠壓力、氣等效應形成泥固結體與樁間土的復合地基,從而提高地基承載力,減少沉降變形。
  5. Objective : to investigate the effect of pumpless portosystemic bypass in clinical piggyback liver transplantation. methods : after catheterized inferior mesenteric vein, the silastic catheter ( filled with heparin saline ) was connected with the catheterized tube of internal jugular vein or subclavian vein in four piggyback liver transplantation patients. the channel was opened after the portal vein was occluded. the portal vein blood poured into the superior vena cava through the pumpless channel. the changes of mesenteric congestion, portal vein pressure, blood pressure and pulse were observed. results : during the occlusion of portal vein, the portal vein pressure was increased greatly, the intestine was congested and swelled obviously and the blood pressure and pulse fluctuated gently. after the pumpless bypass opened, intestinal congestion and swell were abated markedly, the portal pressure, blood pressure and pulse gradually returned to normal range. conclusions : pumpless portosystemic bypass shows a great effect on clinical piggyback liver transplantation. it is a feasible and economical method

    目的探討背駝式原位肝移植術中採用體外門-體靜無泵轉的臨床效果.方法4例行背駝式原位肝移植患者,腸系膜下靜屬支插管經體外硅膠管(充滿肝素鹽)與頸內靜或鎖骨下靜插管相接,在阻斷門靜后開通腸系膜下靜插管,門靜血從體外無泵轉入上腔靜,觀察轉前後腸道瘀血、門靜壓、血壓、搏等變化情況.結果門靜阻斷后腸道明顯瘀血、腫脹,門靜壓力明顯升高,血壓、搏有不同程度的波,無泵門靜開放后,腸道瘀血、腫脹明顯好轉,門靜壓力逐漸恢復正常平,血壓、搏恢復正常.結論背駝式原位肝移植術中體外門-體靜無泵具有方便、經濟、實用等優點,具有良好的臨床效果
  6. The sediment - laden flow fluctuating velocimeter designed in this study has a well static and dynamic charateristic

    本文研製的渾速儀具有良好的靜、態特性。
  7. Works well - designed, skillfully carved italian, a lifelike sculpture garden, vivid detail, it may play in the water chasing gloria, the sweet murmur distinctive appearance, is the envy of people, the two lovers are distributed back a little green and white, more exquisitely charming, op using the above comes the meticulous carvings attendants the beautifully atmospheric leaves, the delicate vein smooth, crafted natural that comes to the distribution attendants reasonable superb, the leaves among the cleverest black jade carved out of two removable small lifelike frogs, picked clean natural colors, more vivid realism

    作品精心設計,巧意雕琢,一對栩栩如生的鴛鴦雕刻細致生,似在中追逐戲嬉,喁喁私語的甜蜜樣子,真是羨煞人也,兩只鴛鴦的背上分佈著些許綠白色,更顯精美迷人,作品上面巧用美艷的翠色精心巧雕在精美大氣的荷葉,葉細膩暢,工藝細致自然,美艷的翠色分佈合理精湛,荷葉中間巧用黑色翡翠摘雕出兩只栩栩如生的小青蛙,摘色干凈自然,更顯生逼真。
  8. In chapter 3, the subgrid eddy - viscosity model for large eddy simulation is applied to calculate the three dimensions unsteady periodic turbulent flow in yantan francis turbine. the pulsating characteristics of some main physical parameters in flow field are found. the calculated axial water thrust of hydraulic turbine agrees with the model - test value

    第三章採用大渦模擬亞格子渦粘模型,對巖灘混輪機的場進行三維非定常湍分析,得到了場中各物理量的特性,計算出ms的軸向推力與模型試驗值大小相當;同時論證了對于下機架承重的混輪發電機組可採用其推力軸承負荷作為電站廠房振的最大垂直激振荷載。
  9. In light of the limitation of fast fourier transform ( fft ) for the method of traditional spectrum analysis to analyze the unsteady signal, wavelet and wavelet analysis are made for the typical unsteady process signal of starting up and shut down with the good characteristic of simultaneous localization in both the time and the frequency domains based on the field test on the vibration of two - row placed units in lijiaxia hydropower station, in which the signal is decomposed into different frequency band, and then the weak signal is caught and the dominant frequency is picked up for the analysis of the vibration source

    摘要基於李家峽電站雙排機組振的現場試驗研究,並且針對傳統頻譜分析方法傅立葉變換( fft )對于非平穩信號已力不從心這一缺陷,利用小波分析方法在時域和頻域上同時具有良好的局部化性質,通過對開停機這一典型非平穩過程信號進行小波及小波包分析,將其分解到不同頻帶內,獲取微弱信息和提取優勢頻率,並對其作振源分析,得出開停機初始時刻因不穩均出現強烈的振現象,且低頻段信號能量最大,開停機過程壓力和尾渦帶擺是引起定子基礎振的主要原因。
  10. This paper gives a review on the five analysis approaches of fluctuation pressure on the hydraulic structures and hydromachines : the method of probability and random process, the method of time - space correlation, the method of fitting data, the method of distribution hypotheses on the data of test survey stations, and the hydromechanics method

    摘要綜述了工建築物及利機械上壓力的五種分析方法:概率和隨機過程法;時空相關法;數據擬合法;根據實驗測點數據分佈假設法;體力學方法。
  11. The turbulent flow in open channel is tested with laser - doppler anemometer, in which the longitudinal time average velocity and fluctuating velocity of turbulent flow in open channel under the conditions of the sudden changes of roughnesses at different water depths are measured

    摘要通過激光測速儀,對壁面糙率突變時的明渠紊進行試驗,測量了糙率突變不同深情況下明渠紊的縱向時均速和速。
  12. The result indicates that the dynamic stress caused by hydraulic pulse at partial load is one of the important reason of the fatigue and cracks of the runner

    結果表明由於壓力引起的轉輪葉片上的振交變應力是混輪機疲勞破壞的主要原因之一。
  13. Their downcuting velocity accelerates except luohe river round luochuan. the erosion velocity of weihe river round tianshui and jinghe river round binxian reduced, and the lateral erosion velocity of luohe river round luochuan reduced. this may be due to the reduced flow

    渭南鎮段渭河、彬縣段涇河的侵蝕速率呈式減小,秦家河段洛河側蝕速率逐漸減小,這可能與河量隨時間推移逐漸減小有關。
  14. Through research of automatic dosing system, established by determining automatic dosage in the methods of transmittance pulsation, streaming potential and mathematical model, it can be concluded that the automatic dosing system brought forward in this paper can fulfill requirements of the technics. likely, this system can also be applied for dosing of other chemicals in water plants, chemical dosing of wastewater treatment plants and other similar places

    通過對採用透光率電位、數學模型等方法確定混凝劑投加量建立的自配投系統的研究表明本文提出的自配投系統能滿足工藝的要求:同樣該系統也適用於給處理廠其他藥劑的投加,適用於污處理廠及其他類似場合藥劑的投加。
  15. The fluid pressure pulse in seawater piping system can cause flow - noise that badly affect the environment and worker in health, even lead to deterioration in operation security of piping system

    管路系統體壓力及其引起的噪聲對環境及人員的身體健康有許多不良影響,也會降低管路系統自身工作可靠性。
  16. In order to analyze the fluid dynamic characteristic in seawater pipeline system, the test device of fluid dynamic characteristic in seawater pipeline system is set up. in this experiment, the velocity of pressure wave propagation is measured by frequency analysis technique and the measured result is reliable. according to the frequency analysis technique and a basic theory of linear transfer matrix, the pulsation pressure value in pipeline is predicted by the measured values from four pressure transducers

    為了分析海管路系統內體的態特性,建立了海管路系統態特性實驗臺架;在實驗中利用譜分析技術對壓力波傳遞速度進行了測量,測量結果可信;並利用譜分析技術及線性傳遞矩陣基本理論,通過多個壓力傳感器的測量值預測了管路中的壓力值,實驗結果與理論計算之間吻合很好;分析了態特性實驗臺架本身的自循環特性對海管路系統中壓力測量的影響。
  17. Experiments and numerical analysis of pressure pulsation for oil and water two phase flow in porous media

    兩相滲壓力的實驗及數值分析
  18. Finally finding that there are two reasons that cause vibration of pipe and noise. the one is the vibration of pump which transfers to pipe and stimulates the vibration of pipe. the second is the stimulating frequency of pulsating water is coherent with the natural frequency of pipe

    最後得出管道的振主要是由於兩個原因,一是泵的機械振傳遞給管道,引起管道的振;二是由於激勵頻率與系統的固有頻率相吻合,引起管道的共振發聲。
  19. Author has investigated the air - volume affect the pressure oscillation in piping system from converse viewpoint. when the structure parameters of the air - volume are some certain value, the pressure oscillation in the exit of the piping system is magnified. this idea makes us a new way to design the power source of high pressure water - jet

    研究表明:當設計的空氣室結構參數(空氣室的容積,安裝位置等)取某組數值時,管道出口端的壓力波幅值遠大於系統輸入壓力波幅值,從而為設計高壓力源提供了一條新的思路。
  20. The influence of various waterpower and configuration parameters on heat transfer is analysed and the rules of convective heat transfer coefficient and the ratio of heat transfer enhancement with mass flux are obtained. at the same time, we gain important results as below : as for resonance chamber with certain configuration, self - oscillation can be generated under suitable configuration and waterpower parameters. for the same configuration resonance chamber, the intensity of the self - oscillation is changed by the waterpower parameters

    量及壓差降低至一定程度時,共振腔還可能削弱換熱;加熱功率的提高會增加體()的溫度,體的粘度會隨著降低,這會減少對的阻礙,使衰減得更慢,而幅度的增加會增強換熱,故加熱功率對有的對換熱是有影響的;自振腔產生的頻率是自振腔固有頻率或其整數倍,頻率過高或過低都不利於對換熱,存在一有利於強化換熱的頻率范圍。
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