混合的问题

This study is to give a solution for the estimation of flash point for mixtures, the necessity for classification of flammable liquids. The traditional models for predicting flash point of mixtures usually by the activity coefficient approach. However, the parameters of activity coefficient were regressed from phase equilibrium data in the literatures. If there is no such parameter in literatures for the desired mixture, the model cannot predict the flash point oft hat mixture. Thus, this research aims at the improvement of deficiency of the flash point prediction models in the literatures by useing UNIFAC (Universal Quasi-chemical Functional Group Activity Coefficient) equation, Dortmund-UNIFAC equation and Lyngby-UNIFAC equation. In this study, we were aim at the prediction model for miscible mixtures.From the result, it is suggested to use different type of UNIFAC equation to estimast activivity coefficient in the predition of flash point for different mixture type.

易燃液体分类的主要依据参数为闪火点值，因此本研究目的为解决易燃液体中混合物分类时所面临到的闪火点值缺乏的问题，而在过去文献中所提出的闪火点预测模式会使用到活性系数，但这些模式使用到的活性系数均需要相平衡的数据以回归其所需参数，若所欲估算闪火点的混合溶液文献上未有相关参数，则无法有效利用闪火点预测模式估算其闪火点，因此针对文献中现有闪火点预测模式的缺点，利用描述液体混合物活性系数UNIFAC (Universal Quasi-chemical Functional Group Activity Coefficient)方程式、Dortmund-UNIFAC方程式和 Lyngby-UNIFAC方程式，建立发展一闪火点预测模式，而本研究以互溶溶液为对象。

In this thesis the development status of MHD power generation technology is reviewed, and the key points constructing a MHD-steam combined cycle are investigated. A kind of flow train of coal gasified MHD-steam combined cycle system is put forward, which is different from previous ones. In this scheme one part of the high temperature flue gas out of MHD generator channel is utilized to gasify the coal, then the clean syngas is produced in the tail gasifier and the energy of high temperature flue gas is used effectively.

本论文评述了磁流体发电技术的发展现状，分析了磁流体—蒸汽联合循环发电系统构成的问题，提出了一种不同于前人研究的尾气煤气化磁流体—蒸汽联合循环的流程方案，该系统利用磁流体发电通道出来的尾气的一部分进行煤气化，这样既生成干净的燃料混合气体又利用了高温尾气的能量。

First of all, the paper gave a briefing on the development of white LED and the problems need to addressed of RGB LED mixed white lighting; Then established colors distributed computing model of the RGB LED white lighting module; Final designed a number of different geometric structure of the RGB LED light source module, by changing angles (interior angle or the angle Centre) of the geometry and the LED colors with different priorities, programmed by using of Matlab software, simulated the color distribution correspond to such light source models.

首先，本文简要介绍了白光LED的发展现状及RGB LED混合白光需要解决的问题；其次建立了RGB LED的颜色分布计算模型；最后设计了几种不同几何结构排列的RGB LED光源模块，通过改变几何结构中角度、不同颜色LED的排列次序，利用Matlab软件编程，模拟以及仿真得到这些光源模型相应的光源颜色分布，并评价其颜色均匀性，进而得到最佳几何排列结构的RGB LED光源模块。

This article from analyzes the Polish nationality music, analyzes Chopin's piano music creation style and the Masurium Zuka creation, analyzes the Chopin music the national characteristic three aspects to obtain, further studies and studies Chopin's Masurium ancestor card music.

这三种舞曲的特点往往混合在一起构成肖邦的玛祖卡，结构上多是对称性乐句构成的三段形式。钢琴织体简单朴素。本文从分析浪漫主义时期及波兰民族音乐入手，到简述肖邦的生平及其钢琴音乐创作风格及玛祖卡的创作，分析肖邦音乐演奏应注意的问题四个方面入手，进一步学习和研究肖邦的玛祖卡音乐。

Although the cloned child will carry the same problem genes as the parent who donates the nucleus, he or she will in all likelihood enjoy the parent's state of health and will be free of the additional risks caused by mixing both parents?genes during sexual reproduction.

尽管被克隆的孩子也会携带捐赠细胞核的父亲的问题基因，但是他们十有八九会享有和父亲一样的健康，并且在有性生殖的时候也会避免因为混合了父母的基因而造成的另外的危险。

When the mould is dried and solidified, aluminum solution of about 700 ℃ is poured into the mould according to the process of ZCAST technique,and the syphon casting is successfully made.

针对美国Z Corp公司生产的快速原型ZCAST粉末价格昂贵的问题，采用自配制的质量百分比为4∶6的400目石膏粉ZP102和200目氧化铝粉的混合粉末，以弯管为研究对象，使用快速成型机成功打印出其模具零件，烘干、固化处理后，按照ZCAST技术的工艺流程，浇注700℃左右的铝合金溶液，成功铸造出弯管。

As a nondestructive technique to measure the inner fine structure of the cathode, the ICT has the unique advantage. We discussed the emission mechanism of thermionic cathode, and tried to explain the excellent performance of mixed metal cathode by Richardson formula and Muller's computational model.

就当前钡钨阴极发射机理的两个主要理论模型作了自己的探讨，并初探了钡钨阴极中钡的供应机制及发射寿命预测的问题，而且用理查逊公式的推导和Muller计算机模拟法解释了混合基钡钨阴极的优良性能。

The China market has long been considered by foreign companies to be one of the toughest export markets of all: problems of geography and cultural distance are compounded by widespread unawareness of many western companies and their products and brands.

中国市场久已经被外国公司考虑是全部的最强硬输出品市场之一：地理学的问题和文化的距离被许多西方的公司和他们的产品和商标的广大不知道混合。

Then,the state of the art and the challenge problems in ICA research field are discussed.The algorithms for standard and extended ICA models,including blind deconvolution,blind separation of convolutive mixtures,nonlinear instantaneous mixtures,are briefly analyzed.

讨论了目前ICA的几个研究方向的发展现状和面临的问题，分析了ICA基本模型和几种扩展模型的求解算法，包括盲反卷积、卷积混和的盲分离、非线性瞬时混合的盲分离。

The nonlinear hyperbolic conservation laws of the transient flow of the media in gas pipeline are hard to he solved, so, the control conservation laws are constituted of mass, momentum arid energy conservation laws, TVD/Godunov hydrid algorithm is used to simulate the transient flow in gas pipeline, and the traditional splitting approach processing nonlinear convection in momentum equation is dismissed ,the convection tern; is directly processed, in the way, the stablization of the algorithm and emulating accuracy of the transient flow are greatly improved.

针对管道中介质瞬变流动的非线性偏微分方程组难以解析求解的问题，由质量、动量、能量三个偏微分方程构成的控制方程组，应用TVD/Godunov混合算法数值模拟天然气管道中气体的瞬变流动，摒弃了传统的差分方法时动量方程非线性时流项的线性化处理，而直接处理非线性对流项，从而大大提高了算法的稳定性和管道瞬变流动的仿真精度。

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。