四对的

Part Three: Dissertate the circumstances of current domestic hard-set securities consulting and brokerage business, and then analyze the main reasons. Discuss the necessity and probability of consulting business serving brokerage business, pointing out the difficulties and risk factors. Discuss the consulting business' four-hand transformation to be fit for new situations.

第三部分，首先对国内证券咨询业务和证券经纪业务均陷入困境的现状及原因进行了论述和分析，然后对证券咨询业务为经纪业务服务的必要性与可能性进行了探讨，指出了其中所存在的困难及风险因素，并对证券投资咨询业务为适应新形势所应进行的四方面转变进行了论述。

Pin register system: A set of appliance s which use pin and holes to assure accurate register of copy, film and plates furring their priparation; especially important for the register of precise colour printing.

圆钉定位系统：在处理稿件、菲林和印版时，用钉对孔的方法以确保准确定位的一套设备。在四色彩印方面，对位问题特别重要。

Pin register system: A set of appliances which use pin and holes to assure accurate register of copy, film and plates furring their priparation; especially important for the register of precise colour printing .

圆钉定位系统：在处理稿件、菲林和印版时，用钉对孔的方法以确保准确定位的一套设备。在四色彩印方面，对位问题特别重要。

The influences of Iraq war on the general situation of world petroleum industry will appear in four aspects, including the break of original pattern of world energy geostrategy, the changes of structure of world petroleum industry, the variation of situation and center of gravity of the world oil investment, and the influences on international oil price and pricing mechanism.

伊拉克战争对今后世界石油业总体格局的影响将表现在世界能源地缘政治原有格局将打破、世界石油工业的格局有所变化、世界石油投资格局和重心发生变化、对未来国际油价和定价机制产生影响四个方面，对此我们应认真应对。

The first part is preface, on the basis of expounding the background, the purpose, the meaning and the thinking of the thesis study, briefly introduce the research achievements of domestic and international urban spatial structure; the second part is summary, expatiate on the connotation, component, research span and space type of urban spatial structure; The third part is theory foundation, mainly introduce the three classical models of city spatial structure in the west country (concentric circles mode, fan-shaped mode and multi-core mode) and the relative city development theories (growth pole theory, dot-axis theory, core-fringe theory, metropolis circle theory and city space evolution theory); The fourth part is general situations of study region; The fifth part is the analysis of Lanzhou city spatial structure evolution, along the historical venation Of city development, on the basis of analyzing industrial structure change, focus on and sumup the characteristics of spatial development and form, meanwhile, analyze factors which influences the spatial development; The sixth part is the analysis of Lanzhou city spatial development trend, put forward the development models of Lanzhou city spatial structure from three space aspects(the core city, the city, region) in the future, they are group gobbet structure, fingers structure, circle structure; The seventh part is to mainly put forward the development strategies for the different spatial structure models.

第一部分为前言，在阐明论文研究背景、目的及意义、思路的基础上，简要介绍了国内外城市空间结构相关研究成果；第二部分为概述，对城市空间结构的内涵、组成要素、研究尺度及其空间类型作以介绍；第三部分为理论基础，主要是对西方城市空间结构的3大经典模型(同心圆模式、扇形模式和多核心模式)以及与本研究相关的城市空间发展理论(增长极理论、点轴理论、核心——边缘理论、都市圈理论和城市空间演化理论)的介绍；第四部分为研究区概况，主要是对研究区域范围的界定及其社会经济发展概况介绍；第五部分是兰州城市空间结构演化分析，顺着兰州城市发展的历史脉络，在分析产业结构变动的基础上，着重对城市空间发展及其形态特征进行归纳总结，并分析了空间发展的主要影响因素；第六部分是兰州城市空间发展趋势分析，从中心城市、市域、区域3个空间层面上提出未来兰州城市空间结构的不同模式，即组团结构、指状结构、圈层结构；第七部分是城市空间发展策略，针对不同的城市空间发展模式提出一些对策建议。

Then, on the basis of above achieved constituent binary results, thermodynamic properties of 10 ternary liquid alioys (Cd-Bi-Pb, Cd-Pb-Sb, Cd-Pb-Sn, Mg-In-Cd, Zn-In- Cd, Cd-Bi-Sn, In-Bi-Pb, Sn-AgPb,Zn-In.Pb, Al-Cu-Zn), 3 quaternary ones (Cd-Bi-Pb-Sn, Zn-Sn-Cd-Bi, Zn-Sn-Cd-Pb) and 1 quinary. one (Zn-Sn-Pb-Cd-Bi) are predicted. For most of investigated multicomponent systems, the calculated activities are in good with the experimental ones, and in particular for multicompoment immiscible ones, the predicted results are satisfactory and exciting. At the same time, the comparison result between the three equations shows that Wilson equation and T-K-Wilson one are more stable than NRTL one, that maybe is because NRTL equation contains a third parameter, and so ,to some degree, Wilson model and T-K-Wilson model are superior to NRTL model. And also the comparison between local composition models and other models such as Pelton- Flengas?method, Krupkowski formalism, mass action concentration model and Hoch- Arpshofen model shows that local composition models are more convenient and credible.

在此基础之上应用局部组成型模型对10个三元液态合金（包括Cd-Bi-Pb、Cd-Pb-Sb、Cd-Pb-Sn、Mg-In-Cd、Zn-In-Cd、Cd-Bi-Sn、In-Bi-Pb、Sn-Ag-Pb、Zn-In-Pb、Al-Cu-Zn），3个四元液态合金（包括Cd-Bi-Pb-Sn、Zn-Sn-Cd-Bi、Zn-Sn-Cd-Pb）和1个五元液态合金（Zn-Sn-Pb-Cd-Bi）的活度进行了预测，预测效果良好，尤其对Zn-In-Pb系和Zn-Sn-Cd-Pb等多元液-液共存体系热力学性质的预测也取得了令人满意的结果；同时对三个方程的比较分析表明：Wilson方程和T-K-Wilson方程在多元系热力学性质的预测中表现稳定，而NRTL方程由于引入了物理意义不清楚的第三参数，使得其具有不确定性和不稳定性的特点，因此Wilson方程和T-K-Wilson方程较NRTL方程更为优越；此外对局部组成型模型与其它模型（如Pelton-Flengas方程、Krupkowski方程、作用浓度模型和Hoch-Arpshofen模型）的比较表明：局部组成型模型同样是优秀的，甚至在某些方面更为简便和可靠。

At present in practice of hog cholera preventing and controlling ,the effect of ultra pre-immunity to antibody level change and protection still existence dispute in the four latter nest piglets.

目前在对猪瘟的防治实践中，对猪瘟超前免疫后四窝抗体水平的变化以及保护效果存在争议。

Chapter 4 starting from the sequence of the house hypothec and the object of the house hypothec, set forth some author own point of view in protecting rights and interests fairly.

第四章对住宅抵押中抵押权顺序、标的进行讨论，对如何公平保护相关主体权益提出自己的见解；围绕住宅租赁的特点和标的，探讨了其特性。

In Chapter 4,we consider the problem of totally characteristic type equation,whose indicial exponent takes positive integers.

在第四章中，我们对全特征型微分方程也讨论了一类不满足第二、三章中定理条件的问题，即对全特征型偏微分方程也考虑了Yamane在文[11]中考虑的问题。

The effect of four-wave mixing and cascade SRS on multi-order Stokes generation and the influence of inert gas were discussed.

对四波混频和级联受激拉曼散射在氢气多级斯托克斯产生中的作用以及惰性气体对它们的影响进行了讨论。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。