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脉动     
相关语句
  fluctuation
    The Analysis of the delivery fluctuation of the Z=5 and 6 Sector-slider pump
    Z=5和6扇形滑块泵流量脉动分析
短句来源
    The expression of pressure fluctuation intensity coefficient K was given.
    给出了侧墙和底板脉动压力强度系数K的表达式;
短句来源
    The Relations between the Operating Condition and Pressure Fluctuation in Draft Tube of Francis Turbine
    水轮机尾水管水压力脉动与运行工况的关系
短句来源
    Research on the Influence Factors and Model Test Method of Vortex Pressure Fluctuation
    水轮机涡带压力脉动影响因素及模型试验方法的研究
短句来源
    The random response of a plate subjected to the fluctuation pressure of aerated flow
    掺气水流脉动压力作用下板的随机响应
短句来源
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  fluctuating
    Experiment Study on the Fluctuating Pressure of Muddy Water
    浑水脉动压力试验研究
短句来源
    Experimental study of fluctuating uplift at the bottom of a scour pool
    在冲坑底部岩块上脉动上举力的实验研究
短句来源
    Elementary introduction to calculation of area fluctuating pressures in hydraulics
    浅谈水力学面脉动压力的计算
短句来源
    Wavelet analysis on flow fluctuating pressure acting on plunge pool slope
    水流脉动压力的小波分析研究
短句来源
    Mathematic Derivation of the Conversion Between a Point Fluctuating Pressure and Surface Fluctuating Pressure on Solid Side
    固体边壁上点面脉动压力转换的数学推导
短句来源
更多       
  fluctuant
    Fluctuant characteristics analysis of sidewall and bottom behind sudden lateral enlargement and vertical drop form
    突扩突跌布置侧墙及底板脉动压力特征分析
短句来源
    After the author introduces Hilbert-Huang Transform which is a new signal analysis theory, he tests the stationarity of typical time domain data of stochastic fluctuant pressure making use of turn method and HHT method respectively. From that, he concludes that stochastic fluctuant pressure on radial gate can be treated asstationary random process going through all of states in the case of certain opening and the characteristic value can be obtained from random function theory and spectrum analysis.
    在详细介绍了Hilbert-Huang变换这一全新的信号分析理论之后,本文分别采用轮次法和HHT方法对典型水流脉动压力时域过程进行了平稳性检验分析,说明在一定开启工况下,作用于闸门体的水流脉动压力可视为各态历经平稳随机过程,其特征量可应用随机函数理论及其谱分析获得。
短句来源
    Making use of this simplified mechanics model, the time domain method of dynamic load identification is put to use on the basis of modal analysis method. And the simulation analysis about stochastic fluctuant load identification on radial steel gate manifests the feasibility and the effectiveness in hydraulic structure.
    利用该简化力学模型,采用基于模态分析法的动态荷载时域识别方法,对水工弧形钢闸门的水流脉动荷载识别进行了仿真分析,表明该方法的可行性和有效性。
短句来源
  pulsant pressure
    Eliminating the abnormal pulsant pressure at the outlet of draft pipe of an 100 MW generating unit
    100MW机组尾水管压力异常脉动消除
短句来源
    2. The time-average and pulsant pressure characteristic have been studied.
    2:研究了台阶式溢洪道的时均压强和脉动压强特性。
短句来源
    The pulsant pressure increases from the nook to the salient in the steps and the along-road distributing of the pulsant pressure is also wavy.
    对脉动压强的研究结果表明,台阶内的脉动压强从凹角向凸角逐渐增大,脉动压强强度沿程亦呈波浪式发展,即在相邻台阶上交替出现波峰和波谷。
短句来源

 

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      fluctuation
    In this paper, the classical risk process perturbed by diffusion is generalized by allowing for "size fluctuation" and the ruin probability for this new model is discussed.
          
    A new feature extraction method using the amplitude fluctuation property of target HRRP for radar automatic target recognition
          
    Actually, the amplitude fluctuation property of target HRRP also represents some feature information of the target.
          
    Based on the scattering center model, a new feature extraction method using the amplitude fluctuation property of target HRRP is proposed in this paper.
          
    Effect of soil water changes on photosynthetic characteristics of Taxodium distichum seedlings in the hydro-fluctuation belt of
          
    更多          
      fluctuating
    The results show that centroids of burned areas in these three regions are in a fluctuating condition that encircles the distribution center.
          
    The developmental stability indices, leaf width based fluctuating asymmetry (FA1), and lateral vein length based directional asymmetry (RDA1) of Platanus acerifolia were studied.
          
    Fluctuations and patterns of desert rodent communities under human disturbance: fluctuating tendency and sensitive response of t
          
    The fluctuating tendency of rodent communities and the sensitive response of their populations were studied using mark-recapture and trap-day methods.
          
    Annual variation in hematological indices in a fluctuating population of bank vole (Clethrionomys glareolus)
          
    更多          
      fluctuant
    Surface deformation is fluctuant with time, which shows the character of surface wave.
          
    Simulation study on fluctuant flow stress scale effect
          
    Crystal plasticity theory was used to simulate upsetting tests of different dimensions and grain size micro copper cylinders in this study on the fluctuant flow stress scale effect.
          
    Through this study, the fluctuant flow stress scale effect can be understood deeper, and relevant necessary information was obtained for further prediction and control of this scale effect and to design the microforming process and die.
          
    At least two episodes of cyanobacterial expansion are documented by 2-methylhopanes ranging from C28 to C32 in carbon number, indicative of the instable marine ecosystem and the fluctuant aquatic nutrients.
          
    更多          


    ~~

    关于脈动流速的观測問題,在气流里面,已經圓滿解决;在清水水流里面,用速續摄影的方式,也得到了解决;在挾沙水流(渾水)里面,还没有很好地解决。为了适应我院关于挟沙水流和其他某些科学研究的需要,我組于1958——1959年,在我院党委和院行政領导下,貫彻执行党的教育方針,采取教师、学生、工人相結合的方式,試制成功应变式脈动流速傳送器梢员容^滿意地观测清水水流及挾沙水流(渾水)的脈动流速。本文对这种傳送器的结构和性能分别作了討論。另外,由于測量的需要,我們还試制了电子測量仪器,本文对这种測量仪器也作了簡单的介紹。

    A theoretical formula indicating the influence factors of the Rheingans number is derived from which the tendency of the hydro-vibration frequency to increase with the decreasing guide opening of the Francis turbine is explained.The phenomenon of pressure fluctuation amplitude varying with the operating condition is analysed with two pressure gradient equations.

    本文导出了影响Rheingans数的因素的理论公式,根据此式可解释水力振动频率随混流式水轮机导叶开度减小而增高的趋势.文中还根据两个压力梯度方程初步分析了压力脉动振幅随工况而变的现象.

    The relations between the pressure fluctuation and velocity distribution in the draft tube of a Francis turbine and the unit speed n', and the unit discharge Q'1 as well as that between the relative amplitude (H) of pressure fluctuation and the outlet peripheral velocity of turbine runner (V2u) are discussed, with a preliminary survey of the mechanism of pressure fluctuation.

    本文讨论了混流式水轮机尾水管压力脉动和速度分布与水轮机单位转速n′_1单位流量Q′_1的变化关系,对压力脉动相对振幅△与转轮叶片出口圆周分速度V_(2u)之间的关系进行了分析,并对尾水管压力脉动的机理作了初步的探讨.

     
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