| − | 简单逻辑S曲线的示意图。增长率函数在同一图上以钟形曲线表示。引自 | + | 简单逻辑S曲线的示意图。增长率函数在同一图上以钟形曲线表示。引自<ref>Kucharavy, D., & De Guio, R. (2015). Application of logistic growth curve. Procedia engineering, 131, 280-290. <nowiki>https://doi.org/10.1016/j.proeng.2015.12.390</nowiki></ref> |
| − | Kucharavy, D., & De Guio, R. (2015). Application of logistic growth curve. Procedia engineering, 131, 280-290. httpsdoi.org10.1016j.proeng.2015.12.390 | |