二阶导数方法 second derivative method ; second-derivative methods 二阶导数滴定 second order derivative titration ..
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传统的条码识别方法是通过二阶导数零交叉来定位条码边界。
Traditionally, the method of bar code recognition is based on zero crossing of the second derivative.
对利用差谱—二阶导数分光光度法直接测定强干扰基体中微量组分的原理和实验方法进行了探讨。
A new method for determining directly trace component in interfering base by absorbance subtraction -second derivative spectrophotometry is proposed.
本文旨在研究求解非凸约束优化问题的基于二阶导数的微分方程方法。
The aim of the dissertation is to study second order derivatives based differential equation approaches to nonconvex constrained optimization problems.
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