velocity gradient的例句大全

From the distribution of velocity, a great velocity gradient can be seen in the zone with 2 D distance to the wall. The phenomenon was due to the boundary flow and reverse flow near the wall.

冲击射流近壁处存在着回流现象，由于边界层流动和近壁回流引起距离固壁2D内的速度梯度变化较大。

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The results showed that the velocity gradient decreased at the region near the wall and the thermal boundary layer increased evidently with the injection of the coolant.

研究表明：发汗冷却减小了壁面处的速度梯度，使下壁面边界层明显增厚；随着冷却流体的注入，壁面处的湍流应力明显增大；

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With color-coded M-mode TDI, the endocardial 、 epicardial velocities and the myocardial velocity gradient ( MVG) were calculated within posterior wall from left ventricular long-axis view.

a）组织多普勒检查：M型彩色多普勒测量左室长轴切面T波顶点时左室后壁（心内膜、心外膜）的心肌运动速度（Vendo、Vpi）、心肌运动速度跨壁梯度（MVGm）；

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The analysis of velocity gradient equation in three dimensional flow

三元流场中速度梯度方程的分析

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Near the head of the fish back and the fish bones, the velocity changes greatly with large velocity gradient.

脊坝及刺坝坝头处流速变化剧烈，形成较大的流速梯度；

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this paper analyses the cause for low ratio of sediment concentration in accelerated clarifying pond and suggests that agitation paddles be transformed and velocity gradient be well-distributed to improve the ratio of sediment concentration.

分析了机加池沉降比低的原因，提出了改造桨板，以均匀速度梯度，提高沉降比。

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In the duration of deep bed filtration the void ratio of sediment will be varied with the average flow velocity gradient.

过滤过程滤层中沉积物的空隙率随水流平均速度梯度的改变而变化。

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In the CGT region, the relation between turbulent Reynolds stress and mean velocity gradient is nonlinear.

CGT区域内雷诺应力与平均速度梯度呈非线性关系.

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Objective To analyze the clinical value of peak myocardial velocity gradient ( MVG) as a noninvasive indicator of left ventricular ( LV) systolic or diastolic function.

目的探讨心肌速率阶差MVG评价左室舒缩功能的价值。

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Thus the difficulties of discontinuous velocity gradient and the stress singularity at the exit point are avoided, and the expense of computation is reduced.

这样回避了速度梯度间断的困难，缓和了出口处应力奇性引起的矛盾，同时又减少了计算量。

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It is demonstrated that the accuracy of the approximate approach is acceptable in engineering, provided that the time averaged velocity gradient be determined by using the proper models.

结果表明，若选择适当的湍流时均速度梯度模型，用近似算法计算的体均能量耗散率与用解析式计算的值接近，说明该近似算法的准确性可以满足工程计算的需要。

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Ray tracing with constant velocity gradient and inversion of 2-D interval velocity

常速度梯度射线追踪与二维层速度反演

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Experimental results indicate that this method can eliminate the Doppler ambiguity spectrum produced by turbulence, transit time effect, velocity gradient in sample volume and correlation of the scatterers in dual sample volume and measure turbulence flow unambiguously.

实验结果表明，该方法可消除湍流、渡越时间效应、采样单元内流速梯度和双采样单元内散射粒子互相关性等因素造成的湍谱模糊，实现无模糊湍流测量。

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Application of theory of boundary velocity gradient in design of orifice

边界速度梯度理论在火孔设计中的应用

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Distorted bends lead to a much larger channel sinuosity and smaller gradient, and thus flow velocity declines and water level becomes higher at equal water discharge.

畸湾的发育使弯曲系数增大，河段比降减小，故流速减慢，因而在同流量下水位壅高；

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The calculative method of critical slope gradient was got from combining the incipient velocity formula and rill stable condition.

结合细沟泥沙起动公式和细沟稳定条件得到坡面侵蚀临界坡度的计算方法。

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Relationships between flow velocity, flow depth, flow discharge, and slope gradient were simulated in a hydraulic flume.

径流流量、流速、水深以及地表坡度是水动力学特性的重要参数，且相互关系密切。

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Based on the literature researches, considered the complex permeability characteristics of low permeability gas reservoirs, a three-dimension gas-water two-phase percolation mathematical model is established, which reflects the concrete influence factors, such as low velocity non-Darcy flow, starting pressure gradient and slippage effect.

本文基于国内外文献调研成果，针对低渗透气藏的复杂渗流特征，建立了低渗透气藏低速非达西流动三维、气-水两相渗流数学模型，该模型考虑启动压力梯度和滑脱效应的影响。

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That the effect of air outlet velocity on the temperature field is significant and the vertical temperature gradient is large, but the horizontal temperature difference is small.

出口风速对温度场的分布有很大影响，垂直平面温度梯度较大，水平平面温度分布均匀。

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While with the increase of the circulating amount of the system, negative pressure gradient and slip velocity in the standpipe increase too.

而随着系统循环量的增加，立管内的负压差梯度以及滑移速度均增大；

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