curvilinear regression of second degree

例句：

1. 1. In this study, we used curvilinear regression of second degree to analyze the relationship between temperature and precipitation.
   在这项研究中，我们使用二次曲线回归来分析温度与降水之间的关系。
2. 2.The curvilinear regression of second degree was used to model the relationship between population density and habitat loss.
   使用二次曲线回归的二次项来建模人口密度与栖息地丧失之间的关系。
3. 3.The results of the curvilinear regression of second degree were used to validate the effectiveness of the conservation measures.
   二次曲线回归的二次项结果被用来验证保护措施的有效性。