脈動現象 的英文怎麼說

中文拼音 [màidòngxiànxiàng]
脈動現象 英文
pulsation phenomenon
  • 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
  • 現 : Ⅰ名詞1 （現在; 此刻） present; now; current; existing 2 （現款） cash; ready money Ⅱ副詞（臨時; ...
  • 脈動 : [物理學] [天文學] pulsation; pulsing; pulse; ripple; impulsive motion; pulsating; panting; loping...
  • 現象 : appearance （of things）; phenomenon
  1. 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。
  2. For both studies, the down - regulation disappears in the presence of protease inhibitors, implying enhancement of the proteolysis pathway is involved in the action of both atherogens

    在這兩方面的研究中，蛋白酶抑制劑可以抑制下調現象提示蛋白水解酶通路的加強可以影響動脈粥樣硬化發生。
  3. 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流動壓、噴射流的脈動負荷、水塊的沖擊力、空穴現象、水楔效應、擠壓力、氣流攪動等效應形成水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。
  4. The application of this hemodynamics experimental model demonstrates that by the model the phenomenon of pressing mural coronary artery by myocardial bridge and resulting in abnormal homodynamic features can reappear

    實驗模型的實際使用證明，其能夠在相當程度上復現心肌橋壓迫壁冠狀動脈，並導致血流動力學特性異常的現象。
  5. 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

    摘要基於李家峽水電站雙排機組振動的現場試驗研究，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水流不穩均出現強烈的振動現象，且低頻段信號能量最大，開停機過程水流脈動壓力和尾水渦帶擺動是引起定子基礎振動的主要原因。
  6. The 7 years ' applicable practices indicate that the frequency modulation technology with dc bus voltage ripples is very effective to suppress acoustic resonances

    7年的使用實踐表明，直流脈動電壓頻率調制技術對抑制聲諧振現象十分有效。
  7. With an aim at this problem, this paper suggests the modulation scheme with dc bus voltage ripple by using the front - end active power factor correct circuit based on the analysis of necessary conditions of producing acoustic resonances

    針對這一現象，在分析產生聲諧振的必要條件的基礎上，重點提出了利用前級有源功率因數校正電路的直流母線脈動電壓的調制方案。
  8. According to the theory of acousto - optic ( ao ) interaction, the formulas of diffraction loss of two ao q - switches, which acousto - field are perpendicular or parallel one another, the power divider for ensuring two ao q - switch synchronization and effective power driving is designed. the calculation results are satisfied with nd : yag laser experimental results. it is show that two ao q - switches, which acousto - field are perpendicular each other, switch - loss is nearly one times larger than one ao q - switch, one of third larger than the two ao q - switches which acousto - field are parallel

    從理論上對聲光器件衍射損耗作了分析與計算，研究了二維雙聲光器件對提高衍射損耗效率的影響，在實驗中採用二維雙聲光組合器件提高聲光器件的對nd ： yag激光器的關斷能力，較之單聲光的關斷能力提高了一倍左右，而對于平行雙聲光也提高了30左右，並設計了聲光驅動功率分配器以驅動雙聲光器件達到同步，消除了激光輸出的多脈沖現象，提高了脈沖列的輸出功率。
  9. Neologisms, as a mirror of social development, grow out of new objects, new phenomena, new concepts, and new thinking

    摘要新詞是社會活動的脈搏，敏感地反映著社會中的新事物、新現象、新概念和新思維。
  10. Myocardial bioelectric phenomena and their mechanism, the characters of excitation transmission in heart ; the periodicity changes and their characters of myocardial excitability, autorhythmicity and pacemaker of heart ; pumping function of heart and evaluation ; the concept, mechanism and influencing factors of arterial blood pressure ; carotid sinus and aortic arch baroreceptor reflex

    心肌細胞（工作細胞和自律細胞）的生物電現象及其形成的機制，心內興奮傳播的特點；心肌興奮性的周期性變化及其特點，自律性和心臟的起搏點；心臟的泵血功能及其評價；動脈血壓的概念、形成機制、影響因素；頸動脈竇和主動脈弓壓力感受性反射。
  11. 108 highway is the south and north mainline to run through middle - west area in my country, and is the main artery of west area economy developing. guangyuan north section of 108 national highway lies in low mountains, and its slope often is unstable

    四川省是西南地區經濟發展的龍頭， 108國道是我國中西部地區縱貫南北的主幹線，是西部經濟發展的大動脈，而108國道廣元北段地處低山地段，邊坡失穩現象較常見。
  12. Unsteady separated flow, produced during the gate - opening period in the reverse radial gate tunnel of a high - lift shiplock, is characterized by negative pressure and high velocity as well as their intense fluctuations in space and time and could easily result in various harmful phenomena such as cavitation, gate vibration and sonic boom, which have been observed and confirmed by prototype and physical model tests

    高水頭船閘輸水反弧閥門開啟過程中，后廊道內發生急變分離流，負壓、高速水流以及壓力與流速的劇烈時空脈動變化容易誘發空化空蝕、門振和聲震等有害現象已被原型觀測和物理模型試驗研究證實。
  13. As for the problems in the experimentation, such as the slow response speed of axes torque control, the disturbance of torque control to position control of throttle lever and the torque fluctuation of axis, solutions had been put forward and proved theoretically

    對于試驗過程中出現的以下問題，油門桿高速運動中輸入軸力矩控制的響應速度較慢，輸入軸力矩控制對油門桿位置控制的擾動，以及輸入軸力矩脈動現象，提出了解決方法，並且從理論上加以驗證。
  14. Combustion system of power plant boiler is taken as the research object of this thesis. the research mainly focuses on the faults of boiler combustion system, such as flame center deflection, powder feed inequality or break, primary air pipe jammed, spontaneous combustion, and backfire or kill in burner spout

    本文以電站鍋爐燃燒系統為研究對象，主要圍繞鍋爐燃燒系統運行中可能出現的爐膛火焰中心偏斜、給粉機下粉脈動、一次風管道內堵粉、自燃、燃燒器噴口回火、滅火等故障展開研究。
  15. The particle deposition which was observed in the simulation results and verified by the experiment and the comparison of the air experimental data with simulation data showed that the cfd model is a feasible way to simulate the spray drying process

    試驗觀察證實了模擬揭示的脈動燃燒噴霧乾燥過程的粘壁現象。實驗與模擬結果比較表明cfd模型能夠比較精確地模擬脈動燃燒噴霧乾燥過程。
  16. Author suggests that increasing number of measurement taps and prolonging sampling time and enhancing sampling frequency will decrease signals aliasing and leakiness

    並提出在進行壓力脈動試驗時，應增加測點、延長采樣時間、提高采樣頻率以避免信號遺漏和信號混疊等現象的發生。
  17. At same time, author suggests to change cavitation factor to important operation condition during pressure fluctuation test so to avoid producing the phenomenon of cavitation stimulus in the prototype operation

    同時，建議針對水輪機的重要運行工況，增加不同空化系數下的壓力脈動試驗，以避免在真機運行時可能產生「空化自激」現象，確保原型機組的安全運行。
  18. The transparent nature of the eye makes the fundus images used routinely in ophthalmic practice for recording, diagnostic and follow - up purposes

    利用電腦影像處理的技術加上不同濾波器的使用，可以準確且客觀地定量及分析眼底的病變參數，如動靜脈比，動靜脈交叉現象，出血區，滲出物區等。
  19. A maximum reflecting of 53. 8 % was obtained. furthermore we advanced, for the first time to our knowledge, which the self - pulsation of phase conjugation wave was related to the incident power intensity. through calculation we concluded that the phase conjugation was instable when the incident power density ranged in 700 - 1240mw / cm2

    實驗中特別著重分析了位相共軛光不穩定，即自脈動現象，首次得出位相共軛光自脈動與入射在晶體上功率密度有關的結論，即在700 1240mw cm 』的入射功率密度下，有位相共軛光不穩定，即自脈動現象產生。
  20. First in this paper, the control methods of electric actuators was studied and analyzed. the retangcle - wave permanent magnet brush - less motor is used for servo - motor, the reason of its torque ripple and the way to eliminating or suppession is analyzed and elaborated. in order to achieved wide - speed range, the method of variable structure control ( vss ) was used.,

    論文分析了飛機電力作動系統的基本要求，選用方波直流無刷電機作為執行電機，採用重疊換向法、變結構控制策略和轉速、電流雙閉環pid控制方案，很好地解決了其固有的低速轉矩脈動現象，達到調速范圍寬、轉矩脈動小的設計要求。
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