While analyzing the present flow imaging technique , this paper analyzes and sums up the features of multiphase flow , sort and parameter . it also analyzes the present status and the history of multiphase flow measurement . it points out the important meaning of multiphase flow measurement to the science and industry production , and sums up the research direction and developing trend of the future multiphase flow measurement 在分析现有流动层析成像技术基础上，对多相流特点、分类及参数进行了分析和归纳，分析了多相流参数检测技术的发展历史和现状，指出了多相流参数测量对于科研及工业生产的重要意义，对未来多相流参数测量的研究方向及发展趋势进行了分析和总结。
With the quick development of science and technology , the extensive apply of information handling , computer communicating , robot controlling , and productive process automating , the systems that people meet are large scale , abundant content and complex phenomenon . a lot of man - made systems have appeared which reflect science and technology trend in the area such as communication , manufacture , traffic , military and productive process . it ' s not convenient to describe these systems with differential equations or difference equations 在通信、制造、交通、军事、生产过程等领域相继出现了一批反映技术发展方向的人造系统，例如通信和计算机网络、计算机集成制造系统( cims ) 、现代交通系统、军事指挥系统、工业生产的控制与调度系统等，这些系统不便于用微分方程或差分方程描述。
The marginal benefit theory of water resources was applied to studying the economic benefit of water resources , and an input - output model with capital , labor forces , and total water consumption taken as independent variables and total industrial production taken as dependent variable was developed for determining the contribution of water resources to industrial production 运用水资源边际效益原理研究水资源经济效益，提出了以资金、劳动力、总用水量为自变量，以工业总产值为因变量的投入产出基本模型，用以确定水资源对工业生产的贡献率。
Hydroxyquinol triacetate was prepared from p - benzoquinone by 1 , 4 - addition reaction with acetic anhydride and then 6 , 7 - dihydroxy coumarin was synthesized from it by hydrolyze and cyclization in concentrated sulfuric acid . then 6 , 7 - dimethoxy coumarin was synthesized by methylating from 6 , 7 - dihydroxy coumarin with an overall yield of 74 . 4 % . the procedure was practical . its structure was confirmed by ir and 1hnmr 对苯醌与乙酸酐经1 , 4 -加成生成1 , 2 , 4 -苯三酚三乙酸酯,然后与苹果酸反应经水解、环合反应得6 , 7 -二羟基香豆素,再经甲基化得到6 , 7 -二甲氧基香豆素,总收率为74 . 4 % ,整个过程反应条件温和,操作方便,适合工业生产的要求,对产品结构进行了ir和1hnmr表征。
With the development of industry , the request of temperature process control is higher , control request basically include control precision , response velocity , system stability and adaptation ability . this paper will research the control system of rapidly changed temperature , and the points are temperature response velocity and control precision , from the results of experiment , the effect of control is relatively perfect 随着工业生产的发展，对温度的过程控制要求在不断提高，其控制要求主要表现在控制精度、响应速度、系统稳定性以及适应能力等方面，本文就是对要求温度快速变化的控制系统进行了研究，主要在温度响应速度和控制精度方面做了一些努力，从最后的实验结果来看，得到的控制效果还是比较理想的。
Fuzzy control , as a main way of intelligent control , is widely used in every field of industrial production , but it is undisputable that fuzzy control has no high precision . the increasement of precision and elimination of vibration for fuzzy control is a new topic to develop fuzzy controller . thus , the researcher of fuzzy control has proposed various programs to solve the problems of this kind , which plays an important role in popularization of fuzzy control technology 模糊控制作为智能控制的最主要形式被广泛地应用于工业生产的各个领域，但是模糊控制精度不高却是不争的事实，提高模糊控制的精度、消除振荡成为模糊控制发展的新课题，为此，模糊控制的研究者提出了各种解决问题的办法，为模糊控制技术的进一步推广起到很重要的作用；对于大惯性的纯滞后系统实施的预测控制也是控制界的主要课题之一，传统的smith预估器需要对象的精确数学模型，而实际工程中的控制对象往往很难获得其精确数学模型，因此，控制精度高且具有预测功能的模糊控制器是解决这一大类问题首选控制方案。
At present , in domestic and international , the study on polymer / kaolinite nanocomposites remains in the stage of preparing kaolininite / organic intercalation composites . only several kind kaolinite / polymer nanocomposites was prepared and characterized . there is no report on industrial production of this kind yet 目前，国内外对聚合物高岭土纳米复合材料的研究，基本上还只是停留在制备高岭土有机插层复合物阶段，真正制备出来的高岭土聚合物纳米复合物只有少数几种，还没有将其用于材料工业生产的报导。
It finds extensive applications in science research , engineering design , trail analysis on the criminal investigation spot , online detection automatically , quality control , machine vision , medicine diagnosis and etc . this thesis analyzes and summarizes the domestic and international researchers ’ work about stereo vision , and then concentrates on the research on some key techniques of stereo vision , such as camera calibration , corner detection , 3 - d matching and 3 - d reconstruction 随着科学技术和工业生产的发展,三维形面测量在现代工业及实际生产中起着越来越重要的作用,在科研、工程设计、刑事侦查现场痕迹分析、自动在线检测、质量控制、机器视觉、医学诊断等方面有着极其广泛的应用前景。本文在分析和总结了当前国内外立体视觉研究工作的基础上,针对其中的摄像机标定、角点检测、立体匹配和三维重建四个关键技术部分开展研究,其主要成果如下: 1 .提出了一种改进的摄像机标定方法。
The study on flow properties of multistage fluidized - bed bioreactor with external circulation at a pilot scale will offer instructions of theoretical parameters in actual fermentation , and it can also provide very important theoretical basis in the course of engineering amplification for future commercial process 中试规模五级外循环流化床生物反应器流动特性的研究将为此类反应器的实际发酵过程提供理论参数的指导，并对以后大规模工业生产的工程放大提供重要的理论依据。
