waterfall sequence theory

例句：

1. 1. The waterfallsequence theory suggests that the first step in solving a problem is to identify the key issues.
   瀑布序列理论认为，解决问题的第一步是识别关键问题。
2. 2.The waterfall sequence theory has been widely applied in various fields of research and development.
   瀑布序列理论在研究和开发的各个领域得到了广泛的应用。
3. 3. Based on the waterfall sequence theory, we can develop a more effective communication plan.
   根据瀑布序列理论，我们可以制定一个更有效的沟通计划。