外文翻译---面向对象的液压系统分析研究.doc

英文原版资料一：摘至〈〈Fluid Power Transmission And Control〉〉（流体传动与控制）2004年第5期The facing target hydraulic system analyses and researchesfirst, facing target analysis brief introduction in the development item of the large-scale software, no matter real-time control system , database system , artificial intelligence system , reach the automatic code to produce specifically , or expand to the CIMSs of a factory, a common demand exists , set up systematic information model at network analysis stage. In numerous systematic analytical methods, the target -oriented analysis (OOA ) the method approaches the human mode of thinking even more, being used by more and more network analysis personnelHold to the person facing target's view and think , the structure of the computer program should keep the same with necessary problem solved , but not keep unanimity with a certain analytical method. Experience indicates , as to any software system, among them the most steady composition is the compositions of talking about the land (PROBLEM DOMAIN ) of the corresponding problem. It goes wrong to be because question talk about some compositions of land too usually systematically. So, carry on abundant analysis and understand accurately to the question it is important foundations with steady security system in terms of the land.Then what is the target on earth? Say popularly , the target means the objective entity in the world , it can " know some things " (store the data ), encapsulate serve " do by some work ",and "it is with targets other in coordination with "(pass by news of exchanging), thus finish (module ) all functions of the system. Why interested in the target? Answer can reply of usinging simple. Though from that computer produce the beginning, we reply code of using already, face target technology allow , reply spend not merely the code, there are other a lot of things. Through facing target's technology, we can reply by demand , analysis , designing , testing plan , user's interface and system structure ,etc. .Face target analytical method based on target , attribute , kind belong to and member , whole and some the basic conception. The large Great Britain's encyclopaedia is pointed out: "The mankind is generally using three structure rules during the process of knowing and understanding the real world: Distinguish target and his attribute . For example, distinguish the size of a tree and tree or space position relation. Distinguish whole target and his component . For example, distinguish a tree and branch . Forming and differentiation of different targets . For example, kind of all trees and all stones of forming and differentiation of kind. "OOA is based on daily rule of the above three. OOA model described that shows some talk about the target in the land , and various structural relations and communication relations particularly . OOA model has two uses. First of all, each software set up among particular real world, OOA model use formalization " view " of real world this. It is set up to various targets , says separately the institutional framework with main software system and real world impose on various rules of the software system and restrain the terms. Secondly, give one group target definitely, OOA model stipulate how about in coordination with could finish software system designated work it will be they. This kind, in coordination with expressing in the model by indicating a group of news joins communication way between the targets.OOA is based on daily rule of the above three. OOA model described that shows some talk about the target in the land , and various structural relations and communication relations particularly . OOA model has two uses. First of all, each software set up among particular real world, OOA model use formalization " view " of real world this. It is set up to various targets , says separately the institutional framework with main software system and real world impose on various rules of the software system and restrain the terms. Secondly, give one group target definitely, OOA model stipulate how about in coordination with could finish software system designated work it will be they. This kind, in coordination with expressing in the model by indicating a group of news joins communication way between the targets. This literary grace is by analytical method that Ed Yourdon proposes, OOA model is divided into five levels. This kind of hierarchical structure allows to come to treat OOA model from different angles, and, this kind of structure benefits and deals with bigger OOA model effectively too.英文原版资料二：摘至〈〈Fluid Power Transmission And Control〉〉（流体传动与控制）2004年第6期the traditional hydraulic pressure and controlthe hydraulic automation equipment and make more and more complicated, besides general controlling electrically , and also increase sports to control, users have also put forward more requirements , there should be flexible and changeable control procedure , s。