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水面流速
相关语句
  surface current velocity
     Application of GPS in Surface Current Velocity and Direction Measurement
     GPS在水面流速流向测量中的应用
短句来源
     Through analysis of precision and advantage & disadvantage for GPS, it has proved that application of GPS in surface current velocity and direction measurement is of highly populization value.
     通过对GPS定位法的精度和优缺点的分析,得出采用GPS定位法施测水面流速流向具有较高的推广价值。
短句来源
  “水面流速”译为未确定词的双语例句
     Analytical Method for Velocity coefficient at water surface
     水面流速系数的分析方法
短句来源
     and that in the dam area the cross sectional area of the main channel will be about 30000m~2,the minimum width of the reservoir surface will be about 1200m,when the discharge is 56700 m~3/s,the maximum surface veloci- ty will be less than 3.52m/s;
     坝区主河槽的断面面积应约为30000m~2左右,最小库面宽度约1200m; 当流量56700m~3/s 时,最大水面流速应小于3.52m/s;
短句来源
     For reservoirs in Frigid Zone and high altitude area, water surfaces may be covered with ice because of lower air temperature and slower velocity of flow.
     在寒带,寒温带及高海拔地区,水库建成后,水面流速减小,在冬季随着气温降低,天然情况下,库区原来不结冰或者只结岸冰的河段可能全被冰层覆盖。
短句来源
     The kε twoequation model for turbulent flow and VOF method are adopted to simulate the 3D turbulent flow in shaft spillway with whirling current. The free surface profile, the magnitude and distribution of velocity and pressure, and the air flux are obtained from the calculation.
     本文采用k-ε双方程紊流模型及基于水气两相流的VOF方法,数值模拟竖井旋流泄洪洞复杂的水流运动,得到自由水面,流速及压力等水力要素的分布规律。
短句来源
     Of the 14 ecological factors, only the difference in number of stone caves between usage plots and contrastive plots is insignificant.
     结果表明,两类样地的海拔、植被类型、植被盖度、落叶厚度、土壤类型、坡度、水面宽、水深、水面流速、基底类型、露石率、食物丰度、干扰距离13个生态因子差异均显著,仅石洞数目差异不显著。
短句来源
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  相似匹配句对
     Analytical Method for Velocity coefficient at water surface
     水面流速系数的分析方法
短句来源
     Application of GPS in Surface Current Velocity and Direction Measurement
     GPS在水面流速流向测量中的应用
短句来源
     COMING TO THEWATER SURFACE
     浮出水面
短句来源
     Between Air and Water
     水面世界
短句来源
     Symmetry; 3. The velocity of flow wasn't stable ;
     3.流速不稳定;
短句来源
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  surface velocity
It is found that the observed values of the pressure are greater, while the surface velocity is lower than the corresponding values predicted by the pseudogas model.
      
The problem of designing a wing airfoil starting from the surface velocity (or pressure) distribution, given in multi-parameter form, is considered.
      
The numerical solution of the problem of flow past a plate whose surface travels in the opposite direction to the stream is obtained under the assumption that the surface velocity is higher than the free-stream velocity.
      
Numerical results reveal the key effects of excitation frequency, cap angle, radiator position (eccentricity), dynamics of the elastic shell, and cap surface velocity distribution on sound radiation.
      
The free sample surface velocity was measured by a laser differential interferometer.
      
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  surface current velocity
Prediction of ocean surface current velocity and application to meteorological navigation in the North Pacific
      
In a river, fruit set was negatively correlated with surface current velocity, and was reduced to zero in current velocities greater than 0.30 m · s-1.
      
The variation in the sea level difference across the Kuroshio is associated with a variation in surface current velocity as predicted by the theory of geostrophic balance.
      
Moreover, it is noticed that the seasonal variation in the surface current velocity in the Strait largely contains baroclinic motions which are locally caused in the Tsushima-Korea Strait.
      
Variations of surface current velocity derived by the TOPEX altimeter are compared with data from Tokyo-Ogasawara Line Experiment (TOLEX)-Acoustic Doppler Current Profiler (ADCP) monitoring for a period from October 1992 to July 1993.
      
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In this paper, an introduction of the main results on cnoidal wave theory is given. By using these results, the difference between the shallow water wave particle velocity calculated by cnoidal wave theory and that calculated by linear wave theory is analyzed. The main difference between them is mentioned as following. When wa- ves propagate from deep water to shallow water, at the beginning, the maxi mum horizontal particle velocity at the water surface calculated by the cnoidal wave theory is much greater...

In this paper, an introduction of the main results on cnoidal wave theory is given. By using these results, the difference between the shallow water wave particle velocity calculated by cnoidal wave theory and that calculated by linear wave theory is analyzed. The main difference between them is mentioned as following. When wa- ves propagate from deep water to shallow water, at the beginning, the maxi mum horizontal particle velocity at the water surface calculated by the cnoidal wave theory is much greater than by linear wave theory, and the maximum horizontal particle velocity at the sea bottom calculated by the cnoidal wave theory is less than by linear wave theory for smaller value of L/d and beco- mes greater gradually when the value of L/d increases, When the wav- continues to propagate forward, the wave dimension gradually approaches to its critical size, the bottom particle velocity calculated by cnoidal wave theory becomes less than by linear wave theory again, due to the increases of H/d. The comparisons between the datacalculated by these two wave theoriese for H/d=0.1, 0.4, 0.78 are shown in Fig. 8. In this paper, the computer block diagram for calculating the shallow wa ter wave deformation by cnoidal wave theory is given also. The results calcu lated by this program are compared with those calculated by linear wave the ory. For the shallow water coefficient of wave length KL, the results calcul ated by cnoidal wave theory are greater than those by linear wave theory, i. e. the wave length decreases slower. For the shallow water coefficient of wave height Ks, the results calculated by cnoidal wave theory may be greater or smaller than by linear wave theory, the comparisons of them are shown in Fig. 11 for T g/d=10.

本文扼要地介绍了椭圆余弦波理论的主要结果.利用这些结果分析了浅水波浪的水面流速和水底流速与微幅波理论的差别.得出了一些有意义的结论。 文中给出了应用椭圆余弦波理论计算浅水中波浪传插时的变形——波高浅水系数们及波长浅水系数 KL的程序框图.将按此程序计算的结果与微幅波理论进行比较,分析了它们的差别,从而得到了一些有意义的结论. 为了便于工程设计应用,文中提供了计算椭圆余弦波要素的关系曲线。

This paper presents the basic laws of the process of reservoir sedimentation such as the sorting phenomena of the the grain sizes of sediment,the fundamental patterns of reservoir sedimentation and the process of“depositing the coarser and sus- pending the fine”which predominates the variation from the stage of the preliminary e- quilibrium of sedimentation to the state of equilibrium of sediment transport,and the features of the sedimentation process of the suspended load in the Three Gorges Reser- voir,such...

This paper presents the basic laws of the process of reservoir sedimentation such as the sorting phenomena of the the grain sizes of sediment,the fundamental patterns of reservoir sedimentation and the process of“depositing the coarser and sus- pending the fine”which predominates the variation from the stage of the preliminary e- quilibrium of sedimentation to the state of equilibrium of sediment transport,and the features of the sedimentation process of the suspended load in the Three Gorges Reser- voir,such as the delta deposit being the pattern of sediment accumulation,the large sediment delivery ratio in the early stage,the small sedimentation ratio in the fluctuat- ing backwater region and the long dur ation needed to reach the preliminary equilibri- um,etc. The dam area of the Three Gorges Project is a river stretch with wide valley with no abrupt bend and no narrows and shallows,including the reach of the continuous slight bends from Miaohe to Wuxiangmiao and the reaches of Sandouping bend and Letianxi bends.Based on the results of the analyses the calculations and the long series of experiments of the sedimentation models,it was found that after the accumulation of the suspended load in the Three Gorges Reservoir has reached the preliminary equibri- um stage,when the reservoir is operated at the flood limit level,the river regime up- stream of the dam will be more gentle and smooth as compared with the condition be- fore the reservoir filling,in the reaches from Quxikou to Taipingxi and from Taipingxi through Wuiangmiao to Citang—Baoshanzui there will be no longer successive bends as occurred before the reservoir filling;and that in the dam area the cross sectional area of the main channel will be about 30000m~2,the minimum width of the reservoir surface will be about 1200m,when the discharge is 56700 m~3/s,the maximum surface veloci- ty will be less than 3.52m/s;and the hydraulic elements are basically the same as those of the Wuhan reach of the Yangtze River.

本文介绍水库泥沙淤积过程的基本规律,如泥沙粒径的分选现象、库区淤积的基本形态、由淤积初步平衡到达输沙平衡经历的“淤粗悬细”过程,以及三峡水库悬移质淤积过程的特点,如淤积形态为三角洲淤积,初期排沙比大,变动回水区的淤积比值小、达到初步平衡的年限很长等。三峡工程坝区系宽谷河段,包括庙河至伍相庙连续微弯段和三斗坪、乐天溪弯道段,没有急弯和窄浅河段。根据分析计算和长系列泥沙模型试验成果,三峡水库悬移质泥沙淤积达到初步平衡阶段,汛期限制水位运用时,坝上游河势尚较蓄水前平顺,曲溪口至太平溪、太平溪经伍相庙至祠堂包山咀,将不出现蓄水前的连续急弯;坝区主河槽的断面面积应约为30000m~2左右,最小库面宽度约1200m;当流量56700m~3/s 时,最大水面流速应小于3.52m/s;水力要素与长江武汉河段基本相同。

The dyke in Jiangqiao Hydrologic Station of Nenjiang River was breached during 1998’s extraordinary floods.The peak flood volume of the section was calculated through analysis of surface velocity efficient,the calculating error was analysed.

嫩江江桥站1998年8月特大洪水发生决口,通过分析水面流速系数,推算决口情况下主槽和决口处的洪峰流量,并进行误差分析。

 
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