水流流速      flow velocity(39) velocity of water flow(1) velocity of water(3) water velocity(2)   flow velocity      Depth-averaged model for lateral distribution of flow velocity and boundary shear stress in an open channel      明渠断面水流流速与边界剪切应力横向分布模型 短句来源      A Study on the. Transverse Distribution of Overbank Flow Velocity      滩槽水流流速横向分布的研究 短句来源      The results indicate that 1:2.5 and 1:2 are respectively the reasonable gradients for the upper and lower part of the slope,and seepage is advantageous to the stability of submerged slope,but this influence is inclined to be ignored when the flow velocity is less than 3 m/s.      结果表明,将上、下部的坡率分别确定为1:2.5和1:2是经济合理的,同时,渗流对水下边坡稳定也是有利的,但当水流流速小于3m/s 时影响不大。 短句来源      By means of the computational results, the effects of initial flow velocity and air ratio on the pressure gradient in pipe are analysed.      通过求解不同流速与不同掺气量时的短管内压力变化结果,分析了初始掺气率和水流流速对短管内压力坡降的影响; 短句来源      The Fluctuating Laws of Flow Velocity and Flow Resistance      水流流速与阻力的脉动规律 短句来源 更多          velocity of water flow      e. water depth of riverbed and velocity of water flow,are analyzed. The analysis result brings to the conclusion that the immersed tunnel scheme of construction is feasible after adopting some engineering measures.      对于重庆地区朝天门两江隧道的修建方案问题,文章在分析了决定修建沉管隧道方案可行性的两个关键参数,即河床水深和水流流速后,指出只要采取相应工程措施,采用沉管法修建两江隧道是可行的。 短句来源   velocity of water      Because of the frequent water level fluctuations and the high velocity of water in the corridor for water, the concrete surface must be with high quality.      由于永久船闸运行时，水位落差大，变化频繁，输水廊道水流流速大，对混凝土外观质量要求非常高。 短句来源      Through the computation of the water hammer pressure in steel and PVC pipes with the Characteristic line method,the influence of velocity of water,material and wall thickness of the pipes to the magnitude,crecent process and phase length of the water hammer pressure is analyzed.      应用特征线法 ,对钢管及 PVC管道中水击进行计算 ,分析了管道中水流流速及管道材料、管壁厚度对管道中水击压强大小、水击压强的增长过程及其相长的影响 短句来源      e. water depth of riverbed and velocity of water flow,are analyzed. The analysis result brings to the conclusion that the immersed tunnel scheme of construction is feasible after adopting some engineering measures.      对于重庆地区朝天门两江隧道的修建方案问题,文章在分析了决定修建沉管隧道方案可行性的两个关键参数,即河床水深和水流流速后,指出只要采取相应工程措施,采用沉管法修建两江隧道是可行的。 短句来源   water velocity      According to similar changing relationship between water velocity and solid particulate matter flowing intensity, selecting suitable data,they researched and got correlated between course of precipitation runoff and concentration of nitrogen pollutant transportation. Basing these working, we set up farmland precipitation runoff nonpoint pollution model basing on amended SCS, unit line of runoff, relationship of process of precipitation runoff and concentration of nitrogen pollutant transportation.      并利用水流流速与固体颗粒被冲刷强度的关系 ,选择合适的试验资料 ,分析得到了径流过程与氮素流失浓度的相关关系 ,从而建立了以修正的SCS法、径流单位线和径流过程与氮素流失浓度的关系为基础的农田降雨径流污染模型。 短句来源      Results showed that there were a highly significant linear relationship betwee n weight loss of gypsum blocks and water velocity (R 2 =0 982). After p roperly calibrated, there were no significant difference between mean water velo city measured by gypsum blocks and that by current meter instrument in situ (P=0 411).      结果表明 ,石膏块的溶失与水流流速之间具有很好的相关性 (R2 =0 .982 ) ,经校正后石膏法测得的笼外平均海流流速与海流计测得的流速之间没有显著性差异 (P=0 41 1 ) 短句来源     查询“水流流速”译词为其他词的双语例句   查询“水流流速”译词为用户自定义的双语例句     我想查看译文中含有：的双语例句 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法，我们为您准备了出自英文原文的大量英语例句，供您参考。   flow velocity Results indicate that sap flow velocity is significantly different among different heights, depths, and directions of the trunk. 例句来源       Sap flow velocity at the upper position of the trunk is higher than that of the middle and lower position, but cumulative flux is not significantly different among the upper, middle and lower sections. 例句来源       Sap flow velocity at 10 mm reached the most and that at 20 mm the least. 例句来源       However, sap flow velocity at 5 mm and 15 mm was similar and was second among the four depths. 例句来源       Results also showed that sap flow velocity of the south was the highest, and that of the west was next. 例句来源       更多             velocity of water flow Analytical and numerical modeling is used to demonstrate that it is possible in principle for radionuclides in small concentrations to migrate through groundwater with the velocity of water flow. 例句来源       The relationship between the response intensity and magnetic field, or velocity of water flow is roughly linear (Figs. 例句来源       Solids transport down the length of the raceway is dependent primarily upon the velocity of water flow. 例句来源       The greater the steepness of slope, other conditions remaining constant, the greater the erosion and runoff due to increased velocity of water flow. 例句来源         velocity of water Analytical and numerical modeling is used to demonstrate that it is possible in principle for radionuclides in small concentrations to migrate through groundwater with the velocity of water flow. 例句来源       Results of calculation on temperature of electrodes, evaporation rate and erosion rate for different electrode materials are presented as a function of arc current, pressure of arc chamber, width of arc root and velocity of water coolant. 例句来源       It was estimated that the underground velocity of water was between 90-100 m/h. 例句来源       The relationship between the response intensity and magnetic field, or velocity of water flow is roughly linear (Figs. 例句来源       Desorption of RWT off the resin in water is dependent on the flow velocity of water and the time after the peak RWT has passed. 例句来源       更多             water velocity Water velocity at male courtship points was positively correlated with a condition factor for males, indicating that males of poor physical condition do not court in fast water currents. 例句来源       The distribution law of pore pressure, pore water velocity and contaminant concentration in unsaturated zone has been presented under the conditions of with coupling and without coupling gas phase. 例句来源       The presence of the biological front was consistent with physical predictions based on water velocity and depth. 例句来源       The mean water velocity at which this behavioral switch occurred was 3.10 cm s-1. 例句来源       In the summers of 1987, 1988 and 1989, water velocity was varied in a large racetrack flume, in order to change both water velocity and bottom sediment transport. 例句来源       更多                    After the construction of reservior in an alluvial stream, the equilibrium condition of the downstream channel will be upsetted due to the reduction of sediment supply. This will result in a change in the form and gradient of the channel. The direction of the displacement will lead to a reduction of the sediment carrying capacity of the channel, through which the river regains its equilibrium. The whole process is accomplished by the flattening of the bed slope, as suggested by the theories generally accept...             冲积河流上修建水库以后,下游河道将失去平衡。河流为了重新建立平衡,必将发生一系列的变化。本文对这—变化的过程,提出了一些新的概念。根据枢纽下游所在地区的地质地理条件,河流的坡降可以有各种不同的变化。坡降的渐趋和缓只是三种可能性中的一种,不能当做普遍规律来看待。河槽的重新建立平衡,主要是通过河床质的粗化作用。河床质的粗化现象具有两种不同的类型。一种是河床表层复盖物因清水冲刷而外移,露出了底下属于另一地质时代的较粗的卵石层,这时河床质的粒径会发生突变。另一种是由于水流的分迭作用,河床质的变化是连续的,徐缓的。在第二种情况下,河床质的粒径虽然变化不多,但是,通过河底沙垅的加多,却可以使曼宁糙率系数有很快的增加,这就使水流的流速降低,挟沙能力减小,河流逐渐建立起新的平衡。随着河床质的渐次粗化,河床的冲刷下切率与时俱減。野外实测结果及水槽试验成果都指出冲刷率与冲刷历时之间成一指数关系。河床质中不能为水流所挟运的颗粒所占百分比愈大,冲刷率下降得愈快,河道重新恢复平衡所需要的时间也愈短。从黄河下游的具体情况来判断,将来修建枢纽以后,下游河道在承受清水冲刷时可能作整体下降,坡降... 文摘来源          ~~             文内研究了河流紊动结构,论述了确定脉动流速的基本因素,得到了表示纵竖向脉动流速沿竖直线分布的公式,并进而确定了紊流虚黏性系数的结构式。在这一基础上对无沙水流与挟沙水流的流速分布以及光滑管道中的流速分布,分别作了阐述,并给出了与实测数据符合的计算公式。 文摘来源          The general equations of motion,mass conservation,continuity and energy are de- rived for the aerated turbulent water flow.The equations appear in the paper as Eqs.(6),(7),(8)and(12),where c denotes the air concentration and a_i the rise velo- city of air bubbles.Equation(6)differs significantly from the Reynolds equation by the appearance of the additional turbulent concentration stress The two-dimensional aerated steady uniform open channel flow is studied in detail, for which the stress equation(16)is f...             本文给出了掺气水流的运动、连续、质量平衡、动量及能量诸基本方程式.考虑了在运动方程式中出现的浓度紊动应力项的重要意义,应用普兰特紊流的混合长度理论,对二元明渠掺气均匀水流的流速分布公式进行了推导.在邻近渠底部分,紊动受底边界约束,混合长度与对底距离成正比,流速分布与通常均质紊流相似,为对数曲线.在邻近水面的部分,紊动自由,混合长度为常值,流速分布为直线的.二分布式均与已有的试验结果符合.文中还继续根据分布式给出了谢才系数依据水流倾角、雷诺数、断面平均掺气浓度及渠底掺气浓度而变的表示式. 文摘来源   << 更多相关文摘         相关查询: 大流速水流 高流速水流 水流流速分布 流速 水流 最高流速 相对流速 排气流速 流速测定法 拖曳水流 水流湍急 水流激浪  对查询结果不满意

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