二元化

Linear solvation energy relation was firstly introduced in the paper, and the method and step of gaining the special parameters of solvent and solute were introduced in detail, and these special parameters were used to selection and optimization of extractive agent in extractive distillation. The model of predicting activity coefficient at infinite dilution was established by linear solvation energy relation. By the above theory, several candidate solvents were selected to separate C5 fraction, and by experiment of vapor-liquid phase equilibrium at atmosphere pressure, the mixture of N-methyl-pyrrolidone including 4% water was used extractive agent of separating C5 fraction. Then binary vapor-liquid phase equilibrium of the some compound in C5 fraction and N-methyl-pyrolidone were determined at atmosphere pressure and correlated by NRTL equation. Isoprene being objective compound, experiments were operated in the laboratory-scale column; the processes were simulated by RadFrac model in ASPEN PLUS. And by the combination of experiment and simulation, the new process of separation of C5 was established.

本文首先对线性溶剂化能关系进行了分析介绍，也介绍了采用溶剂化能关系得到溶质溶剂特性参数的方法步骤，并将这些参数用于萃取精馏萃取剂的选择与优化；也通过线性溶剂化能关系式建立无限稀释活度系数预测模型，取得了一定的预测精度；将通过上述方法初选的溶剂进行了常压汽液平衡的测定研究，通过实验研究选定含水4%的N-甲基吡咯烷酮溶液做为C5分离的萃取剂，测定了大量N-甲基吡咯烷酮与C5组分的二元平衡数据，并进行关联计算；以异戊二烯为目标产物在实验室规模的精馏塔内进行了C5分离的实验研究，取得大量塔内数据；通过选用合适的热力学模型，采用ASPEN中RadFrac模块对分离过程进行模拟研究，通过实验与模拟相结合，建立了C5分离的新工艺，为将来的工业化打下了坚实的基础。

These "urban villages" are caused by factors not similar to those underlying squatter settlements in other developing countries.

在中国经济崛起的趋势下，境内各城市皆产生经济蓬勃发展导致的快速扩张现象，其中包括与中国特有的土地所有权二元化体制直接相关的独特「城中村」现象。

This method makes the best of the advantage of binary optics and liquid crystal-spatial light modulator. It can avoid the unhandy of binary optics and the low efficiency of liquid crystal-spatial light modulator according to the demand. It optimizes temperature uniformity system.

该方法主要是充分利用二元光学法和液晶空间光调制的各自优点，并按照设计系统的要求，最大程度避免二元光学法使用不灵活而液晶空间光调制激光能量利用率不高的缺点，实现温度分布均匀化系统优化。

Accordingly, the development of sports has also experienced the transmutation from body and mind dualistically opposite object generalized sports, to body and mind dualistically opposite subject generalized sports, and to body and mind unified life imitated sports.

与之相适应，体育运动的发展也经历了从身心二元对立的客体化式体育、身心二元对立的主体化式体育到身心统一的生命化式体育的嬗变。

The results showed that monocarboxylic acid stearic acid played a role of surfactant, and the product was still orthorhombic Ce2O(CO3)2·H2O with a high crystallization degree. In turn, duality-carboxylic acid tartaric acid...

实验结果表明在尿素及硝酸铈的混合溶液中分别加入一元羧酸硬脂酸，二元羧酸酒石酸和三元羧酸柠檬酸时，一元羧酸硬脂酸在混合溶液中只起表面活性剂的作用，其产物为斜方晶系的单晶Ce2O(CO3)2.H2O微粉，且表面活性剂硬脂酸的加入使得晶体的晶化程度明显提高；而二元羧酸酒石酸与三元羧酸柠檬酸在均相反应中则起螯合剂的作用，分别与Ce3+形成螯合物酒石酸铈和柠檬酸铈，这些结果的造成是由于其反应机理的不同所导致的。

At first, this paper gives the brief introduction of the history and present status of accelerometer and its testing technology, the working principium and math model of the liquid floated pendu-lous accelerometer, and then, decides the binary width pulse force retrim loop as the design proposal of testing system, researches the transfer function of every part in the system emphasizly, analyses the stability of the whole accelerometer testing system from the angle of control theoretics by the open loop transfer function of system, and designed the correcting net, analyses the basal problems such as resolution, sampling restraint, precision and so on, designs the hardware testing circuits such as preamplification, band-pass filter, alternating amplifier, phase sensitive demodulatorn, pulse-width modulation, frequency scale circuit, moment current generator. Finally, using the graphics program language LabV-IEW which is designed for testing field especially by NI accomplishes the solfware design of testing system,realized the testing functions.

首先对加速度计及其测试技术的发展历史和现状，液浮摆式加速度计的工作原理和数学模型等作了简要的介绍，然后确定了以二元调宽脉冲再平衡测试回路为设计方案，并从控制理论的角度进行了分析，着重研究了系统中各部分的传递函数，利用系统开环传递函数分析了系统的稳定性，同时设计了系统的校正网络；分析了二元调宽脉冲再平衡测试回路的分辨率、采样约束以及测试精度等基本问题，并按照系统分析的结果设计了包括前置放大、带通滤波、交流放大、相敏解调、脉宽调制、频标电路以及力矩电流发生器等测试系统各部分硬件电路，验证了电路的正确性，最后按照测试系统的要求，采用了美国NI公司专为测试领域所开发的虚拟仪器工具——LabVIEW作为测试软件开发工具，利用该图形化编程语言完成了测试系统软件部分的设计，实现了测试功能。

Suggesting to abandon the common priority and build a dualistic system,which is made of the volitive security interest(mortgage right and pledge right) and the legal security interest.

建议摒除国外优先权制度中一般优先权之规定；建构以抵押权、质权为代表的意定担保物权与优先权为代表的法定担保物权的二元化体系。

Hence guiding residents consumption is meaningful to upgrade of consumption and industry structure. The article first give out a conclusion that consumption structure of Chinese urban residents is on the stage of comparatively well-off ; Making use of Extended Linear Expenditure Systemand utilizing time series analysis、cross data analysis、angle index analysis and elasticity analysis,we find the following characters in consumption structure of Chinese urban residents in transition age: the generally comparatively low consumption level,evolving to optimization in general consumption structure,paying more attention to material consumption but less attention to culture consumption and service consumption,crosswise duality,consumption identically.

文章对目前我国城镇居民消费结构所处阶段作出了判断，认为已经处于总体小康型消费阶段；借助扩展线性支出系统模型，运用时间序列分析、横截面数据分析、恩格尔系数分析和弹性分析等手段，我们发现转型时期我国城镇居民消费结构具有总体消费水平偏低、运动方向逐步趋于优化、重物质消费、轻文化和劳务消费、横向二元化、雷同化等特征。

With the development of productivity, the conditions of reforming the two factor system has been mature. Let the "three nongs" take the road of three changes that is the Three changes advance side by side ,co-operate and support one another. Thus, it can diminish the in...

中国现阶段改革二元体制的条件已经成熟，如果让三农大胆地走三化之路，也就是农业产业化、农民市民化和农村城市化，三化互相支持配合，就可以消减二元体制，促进三农健康发展

The system of ownership of collective land is the product of planned economy, and the base of city-rural system of social and economic institution.

我国的农村土地集体所有制是计划经济时代的产物，也是我国半个世纪以来城乡社会经济二元化体制的制度基础。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。