At the present time, there exist a lot of repetitive work in analysis of software reliability and safety which increase the software development cost.
目前，在软件可靠性与安全性的分析中产生很多重复性工作，增加了软件的开发成本。
Software test is the key to ensure the software quality, improve the software reliability and lower the software development cost during the software development.
软件测试技术是软件开发过程中保证软件质量、提高软件可靠性、降低软件生产成本的关键技术手段。
However, software test is a complex process; it needs to consume huge manpower, material resources and time, which takes the 40%-50% of entire software development cost approximately.
然而，软件测试是一个复杂的过程，需要耗费巨大的人力、物力和时间，约占整个软件开发成本的40% - 50%。
However, software test is a complex process; it needs to consume huge manpower, material resources and time, which takes the 40%-50% of entire software development cost approximately.
然而，软件测试是一个复杂的过程，需要耗费巨大的人力、物力和时间，约占整个软件开发成本的40% - 50%。
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