The Second Derivative的意思|示意

The second derivative, they say, is turning positive.

他们说二阶导数转为正值了。

The first and second derivative plates of concave pressure build-up curve are presented in this paper.

本文提出了凹型压力恢复曲线的一阶导数图版和二阶导数图版。

The second derivative, they say, is turning positive. That means that although the economy is spiralling down, it is doing so more slowly.

他们说，二阶导数正在趋正，意思是：尽管经济仍在下滑，但是下滑的速度减缓了。

The Laplacian method searches for zero crossings in the second derivative of the image to find edges.

拉普拉斯算子的方法是在图像的二阶导数搜索零交叉来查找边缘。

The second time derivative is the constant acceleration.

它的二阶导数就是这个恒加速度。

The curvature is the second order derivative of displacement. Also, it has a liner relationship with stain.

曲率又是位移的二阶导数，同时曲率又与应变存在着一一对应关系。