| 1. | The function (f')is usually written simply f" and is called the second derivative .
函数（f’）通常简写成f”，并称之为f的二阶导数。 |
| 2. | A class of stiffly stable k - step second derivative methods of order 2k
1阶刚性稳定的二阶导数方法 |
| 3. | Voltammetric behavior of venoruton and its determination by second derivative convolution voltammtry
维脑路通的伏安行为及其二阶导数卷积伏安法测定 |
| 4. | Study on method of determination of the content of sesame oil by second derivative ultraviolet spectrophotometry
用二阶导数紫外分光光度法直接测定芝麻油含量 |
| 5. | Bar code recognition is a matter of edge detection , which has long been done through the maximum value of the first derivative or zero crossing of the second derivative
条码识别是一个边缘检测问题。长期以来，边缘检测都是通过一阶导数极大值或二阶导数零交叉进行的。 |
| 6. | Based on the fourth - order difference formula of the second derivative term , a fourth - order finite difference method is developed for solving two - points boundary value problem
摘要从中心差分公式出发，利用二阶微分的四阶差分公式，对两点边值问题得到了一种四阶精度的差分格式。 |
| 7. | Thirdly , the effects on the cv rational interpolating splines from the perturbation of the two boundary conditions are analyzed . from this the error bounds of first and second derivatives of cv rational interpolating spline are given
然后,分析了两类端点条件的扰动对cv有理插值样条函数的影响,给出了它们在非均匀节点处的一阶和二阶导数值的误差界 |
| 8. | Since motion simulator focuses on reproduction of motion , it makes great sense to calculate its first and second derivative of kinematic parameters for improvement and evaluation of performance of motion simulator
由于运动模拟器注重于动感的再现,因此, stewart平台的一阶、二阶运动学参数的计算对提高运动模拟器的质量以及评价运动模拟器的性能具有重要的意义。 |
| 9. | By the reason of characteristic on statistics of images , we gave a face searching and locating algorithm based on the second derivatives operator . we obtain the position of face by calculating the change of projection curve using the second operator
该方法计算人脸在两个投影方向上的统计特征，使用二阶微商算子估计投影曲线斜率的变化，进而找出人脸的外接矩形，判断头部在图象中的位置。 |
