需求工程是软件工程中一个不可缺少的、重要的一环，是保证软件质量、提高软件可靠性的关键。
Requirement engineering is necessary and important during software engineering, and crucial to guarantee software quality as well as improve software reliability.
净室软件工程法是一种开发高可靠性软件的软件工程技术。
The cleanroom software engineering is a software engineering technology to develop software with high reliability.
基于构件的软件开发已成为软件工程化开发的重要趋势，可复用构件产品的质量和可靠性是决定软件系统质量和可靠性的关键。
Componentbased software development has already become an important trend. The quality and reliability of reusable components are the key basis of a software system.
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