inverse S-curve的意思|示意

With the background of Gatling gun′s cam curve slot and main roller system, dynamics analysis of high speed inverse cylinder cam mechanism was carried out.

以转管武器凸轮曲线槽主滚轮系统为背景，进行了高速反圆柱凸轮机构滚轮动力学分析。

Methods 4 types of curve-model such as Inverse function model, Power function model, Logarithmic function model and S-function model were used to fit the trend of Type-B encephalitis incidence rate.

方法采用倒数函数、幂函数、对数函数、S型函数四个曲线函数拟合乙脑发病率，经比较选择倒数函数为较优拟合模型。