Software requirement modeling and use case technology are hot points of research to the software engineering. Use case is the key technology for organic requirement in UML.

需求建模和用例技术是软件需求工程研究的热点，用例是UML中组织需求的重要技术。

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This paper analyzes the problems which exists in traditional requirement engineering, and brings up a new way of thinking of system requirement engineering based on object oriented method.

分析了传统系统需求存在的问题，提出了基于面向对象方法的系统需求工程的分析和设计的思路。

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Requirement analysis of software is an important part of the requirement engineering, and it is also the foundation of analysis and design in software development.

软件需求分析是需求工程中的重要部分，也是软件开发中分析和设计的基础。

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The engineering requirement overall for CST, wind-power, new power distribution, electric transportation etc. is phenomenal and unprecedented, and while I marvel at the audacity of the proposal, I doubt very much that it can be done in time, if at all.

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"There are many occasions in which anonymity is a perfectly acceptable and, in fact, morally responsible form of behavior, and the protection of anonymity is a moral requirement, " said Rachelle Hollander, director of the National Science Foundation's (NSF) Societal Dimensions of Engineering, Science and Technology Program, which funded the project.

CNN: Scientists back anonymous Web messaging