流

Methods Design and make a machine which can be used to perfuse kidney in vitro. Observe the effect of this machine on 6 rabbits' kidney.

自行设计、制造一种离体肾脏灌流装置，并进行6例新西兰白兔离体肾脏常温下灌流实验，以评估此灌流装置的工作性能。

To begin with, theory of FCSR and its sequence is summarized and investigated. Furthermore, emphasis is placed on the vaule of 2-adic complexity. A conclusion is drawn that the vaule lies in the relation between 2-adic complexity and lineai complexity of a same seqence. Fact that there exists sequence with high linear complexity but low 2-adic complexity is given and analyzed. The value of 2-adic complexity in cryptanalysis can be directly drawn from the very fact. A series of problems are opened based on the value and discussions are done in various depth. Some good results are obtained in these problems such as the 2-adic complexity distribution of periodic sequences and the stability of 2-adic complexity. The value of FCSR in stream cipher design is discussed at the same time.

首先对FCSR及其序列理论进行了系统的总结和研究，然后重点探讨了2-adic复杂度的流密码意义，通过论证表明，存在线性复杂度较大而2-adic复杂度较小的序列类，从而明确了2-adic复杂度的流密码分析意义，进而提出了一系列相关的研究问题并进行了不同深度的探讨，对其中周期序列的2-adic复杂度分布和2-adic复杂度的稳定性等问题得到了较好的结果；同时对FCSR的流密码设计意义进行了探讨，对其中的问题给出了一些思路或简单结论。

Firstly,the wavelet-based contourlet coding using an SPIHT-like algorithm is utilized on the plain image,and as a result,the compressed datum stream could be achieved which is then mapped to a 3D bit matrix. Afterward,a chaotic sequence is generated by Lorenz chaotic map,and it is preprocessed to a bit sequence which is used to permute and substitute the elements of the 3D bit matrix achieved above. In the end,the processed 3D matrix is mapped back to datum stream,and the encrypted compressed image could be achieved if decoding and inverse transform are performed on the datum stream.

首先采用基于小波的Contourlet变换的类等级树集合分割编码算法对明文图像进行压缩，得到压缩数据流，然后将压缩数据流映射为一个三维位矩阵；利用Lorenz混沌映射产生混沌序列，并对其进行预处理得到比特值序列，根据比特值序列对上述三维位矩阵进行置乱和替代操作；将置乱和替代后的位矩阵重新映射为数据流，并对其进行解码和反变换操作，得到加密后的压缩图像。

The distribution of gas-solid two-phase flow in the axial guide vane cyclone tube was measured with five-orifice pitot tube and by means of isokinetic sampling method.

为研究颗粒分离机理，提高分离性能，采用五孔球探针测试仪及等动采样法对轴流导叶式旋风管内气固两相流速度与压力分布进行了测量，并分别对不同导流锥和排尘结构参数下的纯气流流场及颗粒浓度场分布进行了对比分析。

The main achievements include as follows:(1)With research results of hydraulic jump and impinging jet,flow patterns in stilling basin and plunge pool are analyzed in detail, the distributing characteristics of mean pressure and fluctuating pressure are investigated.

主要成果包括：(1)引用水跃和冲击射流的研究成果，详细分析了底流和挑跌流消力塘内的水流流态特征，探讨了这两种型式消力塘内时均压力和脉动压力的分布规律。

During the period from the reverse trendelenburg position to the starting point for the closure of the valve, the reverse flow of blood occurred in the experimental group with the velocity of (1.4 ± 0.3) cm/s; while in the control group, there was no reverse flow of blood, but the peak flow rate was decreased from (21.3 ± 2.1) cm/s to (18.2 ± 3.3) cm/s.

动物于头高脚低位至瓣膜开始关闭时，实验组均出现血液返流现象，返流流速（1.4 ± 0.3）cm/s；对照组未出现血液返流现象，但血液流速下降，由高峰流速（21.3 ± 2.1）cm/s 减至（18.2 ± 3.3）cm/s。

It combines small power supply unit together to supply power for system, of which the technology is current sharing technology.

本文对用于变电站直流电源系统的均流技术作了深入的分析，详细比较了几种常用的均流技术的特点，并运用集成芯片UC3907进行基于最大电流法的均流技术的研究。

A number of prebuilt workflow components can be used for reading and instantiating models, checking them for constraint violations, transforming them into other models and then finally, for generating code.

在其核心是一个工作流引擎：首先定义转换工作流和许多被用于读取与示例模型的预构建工作流组件，对它们进行约束违反校验，把它们转换成其它模型，然后最终生成代码。

Density, surface tension and rheological characteristics are the essential properties of the non-Newtonian fluid. Pycnometer, surface tensiometer, and rheometer were adopted respectively to measure the density, surface tension and rheological characteristics of 0.25%, 0.50%, 0.75% PAM aqueous solutions at 293.15K. The parameters of equations were fitted in terms of the experimental data.

密度、表面张力和流变性质是非牛顿流体的基本性质，本文采用比重瓶、表面张力仪和流变仪分别测定了293.15K温度下质量浓度依次为0.25%、0.50%和0.75%PAM水溶液的密度、表面张力和流变性质，并对数据进行了关联，拟合了方程参数。

Many lives have been lost to the volcano's frequent eruptions, which are accompanied by high-speed pyroclastic flows and mudflows called lahars.

许多人的生命已经失去由于火山频繁喷发，这是伴随着高速的火山灰流和泥流被称为火山泥流。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。