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The general situation and development of road roller at home and abroad is gave at the beginning of this thesis, including the different pressing mechanism of various rollers. It is analyzed that the useable range of various roller and their advantages and disadvantages. On the basis of model mechanism design and experiment of those self-moving vibrating pressing machine, it is reached the principle and program of a new type of pressing mechanism? double-frequency vibrating pressing machine.

本文首先介绍了国内外压实机械的概况和发展方向，以及各种压实机械的不同压实机理，分析了各压实机械的适用范围及其利弊，并且在自行式振动压实机样机的设计、性能试验的基础上，提出了多频振动压实理论，从而得出了一种新型压实机械—双频振动压实机及其设计原理和方案。

Also, for improving the disadvantages of the original algorithm, the self-searching PID control algorithm is developed based on the PC.

针对试验试凑法控制参数寻找困难、过程繁琐、开发周期长等缺点，本文开发了PID控制参数自搜索算法，初步实现了控制参数自主搜索的功能。

There are many advantages in terms of semantic formal research, but there are also disadvantages about it.

语义形式化的研究有其有利的方面，也有其不利的方面。

Batch controllers are prime examples, where the sequence and maintaining the process variables are intertwined so closely that the benefits of having a programmable controller to do the sequential logic outweighs some of the disadvantages of not having a distributed control system.

批量控制器就是一个主要的例子，这里顺序量和保持过程参量稳定相互影响，持过程参量稳定相互影响，使用可编程控制器做顺序逻辑控制的好处胜于不使用DCS的坏处。

Based on the management principle and objective of Jiangsu SNWDP, the thesis establishes its management framework and designs three management patterns and four modes. Through analyzing the anticipative management effect, scopes in point, advantages and disadvantages of each modes seriatim, the thesis confirms the recommended pattern. It makes framework refinement design, defines rights and duties of control level, execution level and participation level for the recommended pattern. According to the principles of planned water use, metered water use, contract water use, toll water use, it studies project operation for recommended pattern from four aspects, namely water supply plan, measure intensified, water supply contract, and water rate enacted. The thesis analyses and studies how to ensure water supply quality of Jiangsu SNWDP from three levels, including doing watershed protection, intensifying intermediate process, and establishing a long-term mechanism. It makes brief design for dispatching management applied system, studies emphases parts which may affect operation of the pattern in practice, also analyses dispatching optimization of Provincial boundary project management, pumping station management, and different water resources. Finally, the thesis studies relevant basal supports and development stratagems for the management of Jiangsu SNWDP.

本文从分析南水北调江苏境内工程的管理原则、管理目标入手，构建南水北调东线江苏境内工程管理组织框架，设计了管理的三种模式，四个方案，对各种方案的预期管理效果、方案的适用范围、方案的利弊逐一分析，经比选后确定推荐模式；并对推荐模式进行结构细化设计，界定调控层次、执行层次、参与层次的权责；从供水计划、加强计量、供水合同、水价制定方面对推荐模式进行了工程运营的具体研究；从做好源头保护、强化中间过程、建立长效机制三个层次，分析研究如何确保南水北调江苏境内供水水质；对调度管理应用系统作了简要设计；针对实际管理中可能影响整个模式运行的重点细部：省界工程管理、泵站工程管理、不同水资源的优化调度等进行了研究；本论文还分析研究了南水北调江苏境内工程管理的相关基础支撑和发展战略。

It overcomes disadvantages of blurring, serration, etc. of the existed algorithms. The motion compensation algorithm is also compared with the proposed method, which proves its convenience for hardware implementation.

在一定程度上克服了传统算法带来的运动模糊、边缘锯齿等问题，同时与运动补偿算法相比，具有易于硬件实现的优点。

Each setter still has its own advantages and disadvantages.

但每栽照排机仍有自己的优弊端。

Aiming at the village-in-city and shantytown, two typical urban low-income residences, this paper analyzes the characteristics, attribute, problems, and disadvantages of traditional renewal mode of the two kinds of area with Shenzhen and old industrial-base city as examples.

针对城中村和棚户区这两种我国当前典型的城市低收入住区，分别以深圳和老工业基地城市为案例地域，分析其特征、性质、问题与传统改造模式的不足，从改造途径、空间区位、政府职能、城市规划管理事权等角度，提出治理城市低收入住区、克服城市贫困的创新要点。

Because the area is not wide, the leading industry is characterized by projects of development. The construction of the Eco-area is very important in the regional development. The Eco-area should achieve the following objectives. 1 Has perfect shelter-forest in the seacoast, clean sea beach and the greenbelt area accounting for more 50% of the total area. 2 Has the system of collection and disposal of rubbish, the system to make economize use of water. 3 In agriculture, try best to use little chemist. 4 makes the ecological the theme; lays down regulations on the tourism, cultural knowledge spreading and bodybuilding. But we should pay more attention to the disadvantages.

由于所涉及的区域面积不大，主导产业主要以开发项目的形式表现出来，生态旅游度假区建设项目是生态旅游业发展的主要环节，应达到如下标准：一是有完善的海岸带防护林，清洁的海滩，生活及活动区的绿化面积达到50%以上；二是区域内建有完善的生活垃圾收集、处理系统，节水设施和稳定塘污水处理系统；三是农业以绿色产品为标准，栽培、管理、贮藏加工过程都尽可能减少对农用化学品的使用；四是以生态为主线，建成含旅游活动、科普宣传、饮食文化和健身休闲等为内容的设施和综合管理规章。

Absorption with molecular sieve as the traditional method of dehydration ofpropylene has many disadvantages such as complex equipment, high energyconsumption, pollution environment.

传统的丙烯脱水技术是分子筛吸附法，存在着设备复杂、能耗高、污染环境等弊病。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。