R&D project selection and termination are very important in R&D management. Firstly we give a selection model and a termination model respectively, then analyze their characteristics.

• 项目的选择与终止是R&D管理中的两个重要问题，文章首先分别给出了R&D项目选择模型和终止模型，然后对这两种模型进行了比较，分析了它们的实质性区别。