演变

After investigating the evolving of tax systems in the world and the rising of income tax in developed countries, the author suggested the way to optimizing Chinese tax revenue structure is to set up a two-main-body tax system with turnover tax and income tax. The conceived outline is to augment the incom e taxation, to adjust the comparative proportion between turnover tax and income tax, and hence to change the distorted tax system and set up a two-main-body one, in which turnover tax and income tax can function congenially and complementally.

在分析成因、指出弊端和改革必要性后，本文通过对税制演变的规律总结和发达国家所得税上升为主体税种的过程考察，提出优化我国税种收入结构的方向是建立双主体税种结构，总体思路是在稳定流转税收入的情况下，增加所得税的规模及在税收收入中的比重，以动态的方式改善商品流转税和所得税的相对比例，改变我国税种收入结构失衡、税制功能扭曲的现状，构建一个流转税和所得税结构协调、功能互补的双主体税种结构。

In parts of countries in East Asian area agricultural co-operation and interaction have been very active and there are both considerable similarities and obvious differences and complementariness in their agricultural resources and production. It is very significant for the ...

本论文是在经济全球化和东亚区域经济合作进程加快的宏观背景下，深入研究东亚地区部分国家现代农业发展模式与农业支持政策调整的理论和实践；对比各国农业现代化进程的不同特点和利弊得失；概述各国农业政策的历史演变与农业支持政策体系的构建，进行农业支持政策的对比；揭示中国农业支持政策中存在的突出问题和制约因素，分析合理借鉴东亚地区部分国家的成功经验，为中国农业支持政策调整提供一定的理论依据。

The second section of the dissertation, by the study on the basic factor and the composing rule and the evolving mode of culture character and the tradition influence on it, the conclusion of this section is that the purpose of ethnical and local culture is the key determinative of the construction of culture character. The fact is that the purpose lossing will lead the character lossing.

论文中篇：通过研究文化品质的内核基质、表述机制、演变方式和文化传统的传承，认为民族和地区性文化意志构成了文化品质最核心的"话语权"，话语权的丧失必然导致环境特色丧失。

China's regional economic growth disparity has received much attention. Previous studies focus on the evolution law, composition and underlying forces of the regional economic growth disparity.

中国地区经济增长差距是近些年经济界密切关注的一个热点问题，迄今的研究涉及到地区经济增长差距的演变发展规律、差距构成以及产生原因等多个角度。

Objective To evaluate MRI signal changes according to different calcium compound, concentration and proportion, and try to give an reasonable explanation.

目的 探讨钙化MRI信号的演变规律并解释其形成机理。方法采用实验的方法对钙盐标本进行研究。

And former still evolving into level, and need a few wireless and concatenate functions, this meeting makes integrated duty factor more difficult.

而前者则仍在演变阶段，而且需要一些无线保持的性能，这会让整合的工作比较困难。

The problem of universals is no longer a philosophical problem, but also a problem in belief. The history of this problem is ended here in this thesis with Abelards conceptualism.

然后文章再从关于共相讨论的演变出发，梳理了一条清晰的哲学史发展线索，那就是从古希腊到中世纪中期关于共相问题的争论，并以阿贝拉尔的观点做一个时间上的收尾。

Three-dimensional simulation of frontal rainbands and conditional symmetric instability in the Eady-wave model.

利用 Eady 波的高分辨率、三维模拟给出了与条件对称不稳定相关的锋面雨带结构和演变情况。

Using the output data of a MM4 mesoscale numerical model which fairly well simulated the developing structure and the evolution of the "96.1" snowstorm event over Qinghai Xizang Plateau, a nonlinear and non zonally non parallel basic flow symmetric instability models and simulation system were developed to validate the possible effect of conditional symmetric instability on the formation of the snowstorm process, the results showed that in a developing model of two dimensional nonlinear SI i...

利用"96 。1"青藏高原东北部暴雪过程的较成功的中尺度模拟的输出资料，用非纬向非平行基流中的对称不稳定模式，对"96 。1"暴雪发生发展过程的动力学机制进行了三维基流中二维非线性对称不稳定数值模拟试验。结果表明，ψ场和w场的三维配置与切变线的演变过程相当一致，说明用三维基流中二维非线性对称不稳定可能能较好地描述SI在切变线东伸南移过程中所起的作用。

The conditional symmetry instability is the intermediate process between the stable and instable states of the atmosphere. The evolution of the atmosphere from the stable to unstable state or from unstable to stable state comes through two stages. The convective-symmetric instability circulation is related with the state and type of the instability. When the conditional instability lies in the lower level and conditional symmetric instability in the upper level, the circulation will have vertical updrafts in the lower level and slantwise updrafts in the upper level. The release of conditional symmetric instability gives rise to a mesoscale rain belt.

结果表明：条件对称不稳定是大气稳定状态和条件不稳定状态之间的中间纽带，大气由稳定向不稳定或者由不稳定向稳定的演变均通过条件对称不稳定来实现；对流对称不稳定环流的形成与不稳定层的配置有关，当低层为条件不稳定而高层叠加深厚的条件对称不稳定时，对流对称不稳定环流低层出现垂直上升气流，高层出现范围较广的倾斜上升气流，对称不稳定能量释放产生中尺度云带。

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。