Enterprises are free to use top-down, bottom-up, or a combination of top-down and bottom-up design methods within the framework of the models discussed.
在模型讨论的范围之内，企业可以随意使用自顶向下、自底向上、或是二者结合的设计方法。
With the practice of the software design, the software test is researched, several models of software reliability are analyzed, the methods and ways to improve software reliability are discussed.
接着，结合武器系统可靠性评估软件的开发实际，进行了软件测试方面的研究工作，分析了软件可靠性的几种模型，探讨了软件可靠性的提高手段与方法。
The article describes calculation principles, methods, structure parameters and mathematical models in optimized design.
文章介绍了优化设计的基础计算依据、计算方法、结构参数和数学模型。
应用推荐