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The hoist of hypertension is the the most important effect on retinopathy,by observing eye ground vas grade,it can not only reflect the artery of brain,but also the gist of diagnose stages of hypertension.

血压升高是眼底改变最重要的因素，故通过眼底血管的观察，不仅能反映脑部动脉的改变，也是高血压病诊断分级的重要依据。

The aim of this text is about how to serve the students better in their special field of study, train their interests in maths studying and how to fully reflect the quintessence of dual system.Key words : Dual system educational system; the thought based on ability; teach students according to their level; interest

本文拟就将从&双元制&模式下数学怎么更好地为学生学习专业课程服务，培养学生学习数学的兴趣，在数学学习中怎样秉承以能力为本位的&双元制&教育制度的精髓等五个方面进行初浅的探讨。

Its rule of change was obtained. On the basis of other studies, the flocculation kinetics and flocs structure was studied. By making some assumptions, collision frequency were presented. Then the the flocculation kinetics model was established through population balance equation. Comparison of experimental data and modeling results indicate that there are the same trend between the two. So the model can predict flocs number and size during flocculation of Yellow River's loess particles without using empirical parameters. The TEM and SEM were used to obsever flocs in the study of floc structure. The flocculation was divided as flocculi, floc and floc aggregate. The flocs structure model was established by assumption that particles position in floc accords with tetrahedron. The fractal dimension of model and experimental flocs was found to be coincident. So the model can reflect the structure of flocs formed in flocculation of Yellow River's loess particles by macromolecule flocculant at a certain extent.

最后，本文还对絮凝动力学和絮体结构进行了研究，在前人研究的基础上，针对高分子絮凝黄河泥沙，对絮凝过程作了一些符合试验条件的假设，建立了颗粒碰撞频率表达式，应用了颗粒数量平衡方程，从而建立了絮凝过程的动力学生长模型，模型计算结果与试验数据对比表明，二者趋势一致，在没有使用经验参数的情况下基本上能够描述黄河泥沙絮凝过程中絮体数量和尺寸分布的变化过程；对絮体结构的研究中，应用扫描电子显微镜和透射电子显微镜对絮体进行了观察，将絮体分为絮粒、絮团和絮网三个不同的生长阶段，通过假设颗粒结合位置符合正四面体，建立了絮体结构模型，计算得到的模型絮体分形维数基本与试验中的实际絮体相符，在一定程度上能眵反映高分子絮凝黄河泥沙生成的絮体结构。

Its rule of change was obtained.On the basis of other studies,the flocculation kinetics and floes structure was studied. By making some assumptions, collision frequency were presented.Then the the flocculation kinetics model was established through population balance equation. Comparison of experimental data and modeling results indicate that there are the same trend between the two. So the model can predict floes number and size during flocculation of Yellow River's loess particles without using empirical parameters.The TEM and SEM were used to obsever floes in the study of floe structure.The flocculation was divided as flocculi,floc and floe aggregate.The floes structure model was established by assumption that particles position in floe accords with tetrahedron.The fractal dimension of model and experimental floes was found to be coincidentSo the model can reflect the structure of flocs formed in flocculation of Yellow River's loess particles by macromolecule flocculant at a certain extent

最后，本文还对絮凝动力学和絮体结构进行了研究，在前人研究的基础上，针对高分子絮凝黄河泥沙，对絮凝过程作了一些符合试验条件的假设，建立了颗粒碰撞频率表达式，应用了颗粒数量平衡方程，从而建立了絮凝过程的动力学生长模型，模型计算结果与试验数据对比表明，二者趋势一致，在没有使用经验参数的情况下基本上能够描述黄河泥沙絮凝过程中絮体数量和尺寸分布的变化过程；对絮体结构的研究中，应用扫描电子显微镜和透射电子显微镜对絮体进行了观察，将絮体分为絮粒、絮团和絮网三个不同的生长阶段，通过假设颗粒结合位置符西安建筑科技大学博士学位论文合正四面体，建立了絮体结构模型，计算得到的模型絮体分形维数基本与试验中的实际絮体相符，在一定程度上能够反映高分子絮凝黄河泥沙生成的絮体结构。

To reflect the historical and cultural characteristics of Handan City, in 1997 the plug in the oldest Lingxia Arrow built a beautiful scenery and unique architecture of the "Court Idiom" Please calligraphy bit more than the domestic write more than 100 of them Idiom, carved in the stone Court, Forest of Stone Tablets, pavilion, the door on to become a new urban landscape of tourism.

为了体现这一历史文化特点，1997年邯郸市在古老的插箭岭下修建了一座风景秀丽、建筑别致的&成语典故苑&，请国内百余位书法名家书写了其中100多条成语典故，刻于苑内的奇石、碑林、亭台、门楣之上，成为城市旅游的一个新景观。

Meanwhile, the Civil Aviation Authority would work with the State price management departments in research based on the cost and other aspects of airline changes, appropriately increasing the freight tariff announcement, so that prices better reflect the costs of airlines and market changes, more well adapted to production and operation needs of airlines.

同时，民航局将会同国家价格管理部门，在调查研究基础上，根据航空公司成本费用等方面情况的变化，适当提高货运公布运价，使价格更好地反映航空公司的成本和市场变化，更好地适应航空公司生产经营需要。

I make inductions based on the system description of preposition in the Annals of San Guo, reflect the use situations with tabulation method and analyze their characteristics.

首先以列表的方式直观地显现《三国志》介词的使用情况并分析其特点。

Yellow skin can wear clothing, or yellow ivory in the buff into light gray, not only make skin appear yellow, on the contrary, buff and shallow gray complement each other, and will properly reflect yellow skin tender and delicate, of primitive simplicity.

黄皮肤可穿乳白色或浅黄色服装，如果在浅黄色里融进浅灰色，不但不会使肤色显得黄，相反，浅黄色和浅灰色相互补充，会恰到好处地体现黄皮肤的清丽、古朴和柔美。

Zhu Ziqing抯 essays reflect the age and life. Although his essays are influenced by foreign jottings, they carry on Chinese traditional culture and ideas, employ the national artistic method and thus create the unique essays which are 搑ich but not strong, clear but not tasteless?

朱自清散文反映了时代与人生，尽管受着外国随笔的影响，但是继承的是中国传统文化，传统思想，使用的是民族艺术方法，从而创造出&浓而不烈、清而不淡&的个性散文。

It is the influence to include the dihedral angel windages, the surface unflatness and the reflect-surface characteristic on the far-field diffraction energy distribution.

介绍了卫星激光角反射器的远场衍射光强研究，包括二面角偏差、表面不平度和反射面特性对远场衍射能量分布的影响。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了