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。
But for the continuous jet which velocity gradient is not linear, it has not only one virtual origin.
但对于非线性速度分布的连续射流，存在的虚拟原点不是唯一的。
Velocity and isopyknic gradient centrifugation was employed to fractionate rat myocardial nuclei.
大鼠心肌细胞核采用差速离心和密度梯度离心分离提纯。
An instrument for measuring the viscosity of a fluid by passing the fluid at a known pressure gradient or velocity through a length of tubing of known diameter.
测试流体粘度的一种仪器，在实验中使流体在已知压力梯度或流速情况下流过已知直径的一段试管。
The method to analyze the pressure gradient with mean radial velocity is used.
本文提出了利用平均径向速度分析压力梯度的方法。
The effects of the velocity gradient and wall-proximity on the measuring errors are related to the flow direction.
近壁对总压测量影响不大。速度梯度和近壁对测量误差的影响还与来流方向有关。
This paper describes the principle of such a measurement, and a semicircular electrode pair is suggested for the measuring of the two dimensional fluctuations of velocity gradient on the wall.
本文叙述了电化学法测量的原理，介绍了用一半圆电极对同时测量壁面上二维湍流速度梯度脉动的方法和测量结果。
The computed result shows that this new method can not only predict the pressure gradient but can also give the velocity profile.
计算结果表明，这种新方法不但能估计压力梯度，而且还能给出浆体速度分布。
The BP network architecture applied to determine GPS standalone position is designed. Meanwhile, the conjugate gradient algorithm is used to improve the training velocity and accuracy of the network.
本研究设计了适用于GPS单点定位计算的BP人工神经网络模型结构，采用共轭梯度算法改善网络的训练速度和精度。
We may assume that there is no correlation between the local velocity of a liquid particle at a mathematical point inside the void space and the concentration gradient.
我们可以假定，在空隙空间的一个数学点上液体质点的局部速度和浓度梯度之间无相关性。
With increasing of superficial gas velocities, the liquid flow regime was changed from homogeneous to transitional and radial gradient of axial liquid velocity was rather small.
且当表观气速增大，初始流体流动处于由均匀流型向过渡流型的转变，轴向液体速度在径向的梯度非常小；
The growth velocity of the crystal depends on the undercooling, temperature gradient and original particles in the precursor.
晶体生长速率取决于过冷度、温度梯度和初始粉末颗粒尺寸。
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。
The negative pressure gradient and slip velocity in standpipe increase with the increase of circulating rate.
随着循环量的增大，立管内的负压差梯度及气固相对速度也随之增大；
The relation between the gradient of local (plastic) shear deformation and the local (plastic) shear strain and that between the gradient of velocity and the strain rate were established.
建立了局部(塑性)剪切变形梯度与局部(塑性)剪切应变分布之间的关系及速度梯度与应变率分布之间的关系。
The results of the computation indicate that the gradient of the gaseous medium and the velocity of gas atoms from the jet cannot cause detectable effects in experiments.
计算结果表明，采用喷阀技术所提供的气体介质的密度梯度和气体原子运动速度的影响很小，不会产生实验上可观测的效果。
The more the bubble close to the free surface, the narrower the bottom jet develops crosswise, and the larger the pressure gradient, the rising velocity and the height of the bottom jet is upwards.
越靠近自由表面，底部射流横向发展越窄，而向上的压力梯度，气泡上升速度，底部射流上升高度越大，反之则反；
The effects of temperature gradient and interfacial growth velocity on solid-liquid interface morphology were studied with succinonitrile under the unidirectional solidification system.
以琥珀腈为研究对象，用设计的定向凝固实验体系，研究了不同温度梯度和界面生长速度对固液界面形貌的影响。
The variation of flow velocity in high gradient reveals the paroxysmal characteristics of the development of rill.
大坡度的水流速度变化揭示了细沟发育具有突发性特征。
The results show that a large velocity gradient emerges in the intermeshing region of the screw reactors, which is helpful to mix materials sufficiently.
结果表明，螺杆反应器的啮合区具有较大的速度梯度，有利于物料的充分混合。
This expression not only contains the term of dot product of velocity vector and temperature gradient, but also contains the dot product of velocity vector and the pressure gradient.
该式不仅含速度矢量与温度梯度矢量的点积项，还含有速度矢量与压力梯度矢量的点积项。
Water potential reflects energy level of soil water and the gradient of water potential is an impotent factor describing direction and velocity of water flow.
水势反映土壤水的能态，而水势梯度则是决定水流方向和速度的重要因素。
Since the gradient of the velocity is high in the mould, the control method of simulation points is applied in the least square approximation.
由于口模内速度变化梯度较大，采用最小二乘近似节点控制方法来控制近似效果。
Cathode plasma moves ahead to the anode and changes diode effective gap. Plasma's expanding velocity is determined by electric field, density gradient and temperature gradient.
决定阴极等离子体膨胀速度的因素主要有二极管区的电场强度、等离子体的密度梯度和等离子体温度梯度等因素。
The core content of the theory is the correspondence between the thermal performance and the integral of the dot product of the velocity and the temperature gradient.
此理论的核心内容是传热率和速度矢量与温度梯度的点积值的对应关系。
The first, how to sort out data coming from experiments by the theory of boundary velocity gradient; Secondly, how to apply the data in practice.
在实践中应用该理论涉及到两个问题：一是如何将实验测得的数据整理成边界极限速度梯度，二是如何利用边界极限速度梯度反过来指导实践。
Theoretical and experimental results show that this method can eliminate the Doppler ambiguity spectra produced by transit-time effect, turbulence and velocity gradient in sample volume.
理论与实验研究结果表明该方法可消除渡越时间效应、湍流和采样单元内流速梯度造成的频谱模糊。
Velocity gradient, pressure gradient and circulation gradient are used to model the separated vortex flow field over a leading edge delta wing.
用速度梯度、压力梯度和环量梯度模拟大攻角尖前缘三角翼流场。
It was concluded that change of air supplying temperature has a little influence on the gradient of the velocity and temperature.
通过分析认为，送风温度的变化对于整个试验区域速度场和温度场的梯度变化影响较小，而送风速度的变化则影响较大。
It was concluded that change of air supplying temperature has a little influence on the gradient of the velocity and temperature.
通过分析认为，送风温度的变化对于整个试验区域速度场和温度场的梯度变化影响较小，而送风速度的变化则影响较大。
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