中文摘要：

为了确定s-、r-过程双增丰星的主要形成机制，得到更多s-过程和r-过程核合成相关信息，用对流模型的参数化方法计算了20颗s-、r-过程双增丰的贫金属星，计算结果与观测符合的较好，为相关问题的研究提供了可靠的依据．

英文摘要：

This paper calculates 20 mental-poor s-, r-process both enhanced stars to determine the main formation mechanism of s-, r-process both enhanced stars and obtain more information about the integration of s-process with r-process. The results accord with the observation, providing reliable evidence for further investigation.