In zero pressure gradient flow, this local momentum loss is Minost an additive constant quantity. On the other hand, adverse pressure gradient results in amplification of this momentum loss.
在零压力梯度下，这个局部的动量损失几乎是一个附加的常量，而逆压梯度则会扩大这种动量损失。
When there's a smaller gradient, air is often able to flow down from the Arctic.
而当它们之间只有一个较小的气压梯度时，风就能够经常从北极区向南吹。
And that told us that the flow is proportional to a negative gradient of a concentration.
这告诉我们，流动是和浓度的负梯度成比例的。
This article mainly introduces the prediction method of the flow pattern, pressure gradient and liquid holdup of two phase flow in horizontal pipelines.
本文着重介绍水平管中这种两相流动的流动型态、压力梯度和持液率的预测方法。
Centrifugal buoyancy arising from radial temperature gradient of fluid has a great influence on the enhanced heat transfer performance of swirling flow.
由流体径向温度梯度引起的离心浮力对旋流强化传热效果有重要影响。
Dual linear gradient elution can be performed with two specially made glass container and a high pressure constant flow pump.
用两个特制的玻璃容器及一台平流泵即可实现二元线性梯度洗提。
Research on characters of non-Darcy flow and starting pressure gradient of low permeability reservoir were foundation of reservoir production.
低渗透储层渗流具有非达西特征和启动压力梯度，是研究低渗透储层开发过程中问题的基础。
Gradient of liquid level increases with the increase of liquid flow and the height of weir.
液面梯度随液体流量的增加而增加，随堰高的增加而增大。
The static pressure gradient in cyclone air classifier can have influence on the test and measurement for its flow fields by five-hole probe.
用五孔探针测试旋流式气力分级机流场时，分级机内存在的静压梯度会对测试产生影响。
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。
Calculation of optical flow is based on gradient method.
本文采用基于梯度的光流场计算方法。
The high head produced by the impeller means high adverse pressure gradient within blade passage and because of this the flow often separates from the blade surfaces even at the design point.
低比转速泵的高扬程决定了叶片流道内逆压梯度比较高，这种压力分布使得水流易于在叶片表面脱流分离，这一现象甚至在泵的设计点也难以避免。
The models of the nonlinear radial flow for the infinite and finite reservoirs including a quadratic gradient term were presented.
考虑了二次梯度项影响的非线性径向流动问题的无限大地层和有界地层渗流模型。
The effects of mobile phase composition, flow rate, column temperature, gradient ramp, ph value, salt concentration, and buffer concentration on capacity factors (K ') were respectively discussed.
对流动相组成、流率、柱温、梯度速率、pH值、盐浓度以及缓冲液浓度对容量因子(K')的影响分别进行了讨论。
This movement creates an osmotic gradient that allows water to flow.
氯离子运动所产生的渗透梯度又带动了水分子的流动。
Moreover, the abatement of a transverse pressure gradient will be beneficial for decreasing transverse flow losses.
而横向压力梯度的减弱将有利于减少横向流动损失。
Fluids flow down a hydraulic gradient, from points of higher to lower hydraulic head.
流体向水力梯度下游的流动是从水力压头较高处到水力压头较低处。
The separation flow is three dimensional in hydraulic machine. The pressure gradient in cross direction produces secondary flow in boundary layer.
水力机械的分离为三维流动，三维流动的侧向压力梯度产生边界层的二次流动。
A new ellipse extraction algorithm based on the ellipse-special deformable templates and gradient vector flow (GVF) was proposed.
给出一种结合梯度矢量流(GVF)及椭圆变形模板的椭圆提取新算法。
The threshold pressure gradient of low permeability sandstone was studied experimentally by measuring the pressure attenuation in an unsteady seepage flow.
为了研究低渗透砂岩的启动压力梯度，设计了一种非稳态渗流中测量压力的试验方法。
The experiments show that microbe solution flooding can decrease the threshold pressure gradient, lessen the flow resistance, and extend the effective drainage distance.
与水驱相比，微生物驱油可降低启动压力梯度，降低渗流阻力，扩大有效驱动距离。
The Newton method with the new gradient is combined with the interior penalty method to obtain the capacitated network flow solution.
利用新梯度的特征，并结合惩罚函数方法，可以获得容量制约下的交通网络流的解。
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。
According to features of edge gradient maps of face images, a new eye feature extraction algorithm based on gradient vector flow field was proposed.
根据人脸图像的边缘梯度图提出了一种新的基于梯度向量流场的眼睛特征提取方法。
We pictured the hardware structure of gradient waveform generator. The introduction of FPGA and FPGA design flow is also described.
文中描述了梯度波形发生器的硬件结构，简介了卡上fpga内部结构及FPGA内部逻辑设计流程。
In this paper, on the basis of Gradient Vector flow (GVF) snakes, a fully automatic image segmentation algorithm based on the analysis of flow field and the minimal path method is proposed.
人工干预使蛇模型只能用于半自动的图像分割，该文在梯度向量流(GVF)蛇模型的基础上提出一种基于流场节点与最小路径方法的全自动图像分割算法。
The experiment quantitatively verifies the existence of convection flows of gas induced by the gradient magnetic field, furthermore the convection flow promotes the combustion in diffusion flames.
实验定量地验证了梯度磁场可以诱导气体对流的发生，从而进一步推进扩散火焰燃烧反应。
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。
This paper analyzes air source in heating system, states that gas is harmful in the system, points out level pipe gradient being small in single measure system, and velocity of flow must keep great.
本文通过分析采暖系统中的空气的来源，提出空气在系统中的危害，针对单户计量系统中水平管坡度较小，提出水平支管中水流速应保持较大。
This paper analyzes air source in heating system, states that gas is harmful in the system, points out level pipe gradient being small in single measure system, and velocity of flow must keep great.
本文通过分析采暖系统中的空气的来源，提出空气在系统中的危害，针对单户计量系统中水平管坡度较小，提出水平支管中水流速应保持较大。
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