MRI demonstrated cerebral hemorrhage or infarction, and numerous spotty flow void effect in basal ganglia region.
MRI显示脑出血或脑梗塞等脑实质改变，并能显示基底节区异常血管点状流空。
The acquired typical void fraction signal is presented and qualitative discussion to the dynamic process and mechanism of flow is hence delivered.
定性讨论了不同流型下典型动态时序信号的差别与相应的流动现象与机理。
Void wave is a normal wave phenomenon in industry and high-technology field. It is one of the most important characteristics of two-phase flow.
空隙率波是工业生产和尖端技术领域里常见的一种波动现象，是两相流的本质特征之一。
The void fraction of annular two-phase flow inside cylinder is analyzed.
对圆管内环状两相流的空泡份额进行了分析。
Based upon above research, effects on the mass flow rate of powders of inventory of powders, fluidization gas velocity, reaction gas velocity and void of packed bed are discussed e.
讨论测量细颗粒质量流率的方法，以此为基础研究了细颗粒藏量、流化气速、反应气速及固定床的空隙率对细颗粒质量流率的影响。
A method of using metal probe for measuring the void fraction at any point in gas-liquid two-phase flow on Sieve tray is described.
用金属探针法测量塔板上气液两相流中某些点的含气率。
The void fraction in downward gas oil two phase flow in vertical tube is measured with the combined method of horizontal downward vertical tube for the two flow regimes(bubbly and slug flow).
采用水平—下降管组合法测量了垂直下降管内油气两相流动在泡状和弹状流下截面含气率的值。
In annular flow the penetrating effect of stream A makes the void fraction same besides a baffle.
在环状流下，A流路的贯通作用使折流板前后对应区域的含气率基本一致；
This paper describes an experimental and theoretical research on the void fraction of two-phase flow in horizontal helically coiled tubes .
本文从试验和理论两方面详细地研究了卧式螺旋管内气液两相流截面含汽率的分布与变化规律。
In this paper, the prediction of void fraction and pressure drop for upward gas-liquid annular flow in a vertical annulus is studied.
对垂直同心环形管内上升气液环状流的截面含气率及压降预测进行了研究。
When grinding softer metals, larger void space are needed to facilitate the flow of the removed chips.
当磨削较软金属时，需要较大的空隙以便去除切屑的流动。
Error analysis showed that the measurement error is usually less than 10% for low void fraction flow. So this is a lowcost and accurate measurement method.
误差分析表明，这种测量方法在低空泡率条件下测量误差一般不超过10 %，它是一种低成本、高精度的绝对测量方法。
How to determine the stability, flow value, how to choose an advisable void volume and what kind of mineral aggregate gradation is adopted are the key problems in Max ratio test.
如何准确测定稳定度和流值、如何选择合理的空隙率以及采用何种矿料级配是沥青混凝土配合比试验的关键问题。
According to different optics-dispersion character, threshold segmentation method is proposed to identify gas from the gas-water flow, which make steadfast base for further calculate void fraction.
根据气泡和水对光的反射特性不同，提出采用阈值法识别图像中的气泡和水，从而为进一步计算掺气浓度打下坚实的基础。
Strouhal number in two-phase flow reduces with the increase of the void friction.
两相流斯特拉赫数随含气率的增加而减小。
We opened it up, created a void where the natural light passing through the clay brick facade can flow into the space.
我们将这个封闭空间打开，创造了一个新的空间，自然光透过该区域进入内部空间。
The steady-state flows in drill pipe and in annulus are analyzed and the variations of pressure, gas void fraction, and multiphase-flow density along the well depth are simulated.
举例分析在环空和钻柱内的稳定流动过程中，随井深增加，压力、含气率、多相流体密度等的变化规律；
Then the corresponding sonic velocity of the two-phase flow is determined by the void ratio, pressure and density of the liquid phase.
其对应的音速与汽液两相流体的空泡率、压力及液相密度等因素有关。
For the various flow pattern in the various simulated conditions of this paper, the maximum radial void fraction is most at the center of the tube.
在本文模拟工况下出现的各种流型，其径向持气率的最大值基本出现在管中心。
The flow patterns were observed by a high speed video system and also by visual inspection. Their void fractions were measured.
流型的确定采用了高速录相机系统，也同时进行肉眼观察，并测量了不同流型的空隙度。
The effects of gas flow rate and rotating speed on the fluid field, local void fraction distribution and bubble size distribution were investigated.
考察了不同通气量和操作转速下气液搅拌槽内流体流动，局部气含率和气泡尺寸的分布规律。
The result indicates that the sound speed is related to the void fraction, local pressure and flow pattern.
试验结果表明，气液两相流音速与气泡率、当地压力及其流型有关。
The conductivity probe was used to measure the instantaneous local void fraction in the horizontal pipe and the illustrative picture of probability density of flow pattern translation is obtained.
使用自行设计、制作的电导探针测量系统，测量了水平管内瞬时、局部空隙率，并且得到流型转变的特征密度概率图谱。
Void fraction is one of the basic parameters in steam liquid two phase flows. To date, the study of methods for calculating subcooled boiling void fraction mainly focused on high mass flow rates.
空泡率是汽液两相流动的基本参数之一，而已有过冷沸腾空泡率计算方法研究以高质量流速为主，且大量文献报道现有空泡率模型难以适用于低流速过冷沸腾工况。
Void fraction is one of the basic parameters in steam liquid two phase flows. To date, the study of methods for calculating subcooled boiling void fraction mainly focused on high mass flow rates.
空泡率是汽液两相流动的基本参数之一，而已有过冷沸腾空泡率计算方法研究以高质量流速为主，且大量文献报道现有空泡率模型难以适用于低流速过冷沸腾工况。
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