There is no pressure gradient through the thickness of the film.

贯穿流体膜厚度无压力梯度。

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 attenuation of the sound waves leads to a negative exponent pressure gradient.

随着波长的增大或介质黏度的减小，声波的衰减减缓，压力梯度越小。

The diastolic transseptal pressure gradient correlated inversely with the eccentric index.

跨室间隔压力差与左室舒张末偏心指数呈显著负相关。

The atmosphere pressure gradient is an inverse measure of the spacing of the isobars on a weather map.

气压梯度与天气图上等压线的间隔大小成反比。

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；

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。

MicroChannel turns contribute to extending the separation length and reducing the disturbance of external pressure gradient.

弯曲微通道有助于增加分离通道的长度和减小外界压力梯度的干扰。

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。

Pressure gradient hydrophone is one of the implementation forms of acoustic vector sensors while another form is the vibrating sphere.

压差水听器是水声矢量水听器的一种实现形式，同振球则是另一种实现形式。

Based on the theory of two-phase flow, the equation of the pressure gradient is found for the short pipe in cavitation jet cutting set.

基于两相流体动力学的理论，建立空蚀射流切割装置中短管内的压力变化梯度的基本方程式；

The pressure gradient and entrainment of vortexes are main reasons that synthetic jet actuator controls low speed primary jet direction.

压强梯度的存在和旋涡的卷吸作用是合成射流激励器控制宏观低速流流动方向的主要因素。

The method can be extended to axisymmetric and three-dimensional turbulent boundary layers if the pressure gradient effect is considered.

如果考虑压力梯度的影响，还可以将该方法推广到轴对称和三维湍流边界层中去。

Release of the heat of fusion is believed to alter the pressure gradient in such a way as to diminish the destructive winds near the storm center.

人们认为融解热的释放可以改变气压梯度，结果减小风暴中心附近的破坏性风力。

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。

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。

Results also show that decrease of pressure gradient in winter and spring influences dust weather frequency by affecting wind speed indirectly.

冬春季节气压梯度的减小是风速减小、进而导致沙尘日数减小的关键间接因素。

With consideration of start up pressure gradient and media deformation, this paper studies vertical well production in low permeable reservoirs.

考虑启动压力梯度和介质变形的影响，研究低渗透油藏中直井产量的变化规律。

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。

Since the pressure gradient affects stress strength of crack top, it is unsuitable to judge crack initiation by the traditional breakdown pressure.

气体压力分布影响裂缝尖端应力强度，因而不能用传统的破裂压力来判断裂缝起裂扩展。

The method is presented to determine formation average pressure and boundary pressure with threshold pressure gradient and injection-production ratio.

给出了考虑注采比和启动压力梯度的平均地层压力和边界压力的确定方法。

Even if the pressure gradient is partly balanced by the fluid acceleration, its order of magnitude is usually no larger than the hydrostatic gradient.

即使压强梯度部分地被流体加速度平衡，其数量级通常也不大于静压梯度。

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。

The pressure gradient calculated by FEM, which is influenced by slippage effects under high pressure condition, is compared with that of mathematic model.

比较低渗透率情况下考虑高地层压力作用的滑脱流和原有的达西流对压力分布的影响。

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。

Modelling tests are made in this paper to check the error subtraction scheme of the pressure gradient force in models with topography developed by the authors.

本文则用气候模式对作者提出的有地形数值模式中气压梯度力的误差扣除法进行了模拟检验。

Therefore, the impact of starting pressure gradient must be considered when analyzing the productivity of vertical fracture well in low permeability reservoir.

因此，在进行低渗透油藏垂直裂缝井产能分析时，必须考虑启动压力梯度的影响。

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 effects of reservoir fluid property in high and low pressure and the starting pressure gradient on the percolation laws were taken into account in this model.

给出了极限井底流压和产量拐点的求解方法，分析了启动压力梯度、流体性质等因素对低渗透油藏油井产能的影响。

The calculation method of microcosmic starting pressure gradient is put forward based on the model of pipe flowing and rheological behaviour of conventional heavy oil.

利用微观尺度管流模型，结合普通稠油流变特征，提出了在考虑稠油流变性条件下微观启动压力梯度计算方法。