the first-order differentiation

• 一阶导数

the first-order differentiation的用法和样例：

例句

1. Two methods for the rapid determination of 10-HDA in royal jelly with the def-frential spectrophotometry and the first derivative spectrophotometry are presented.
   本文提出了用差示分光光度法和一阶导数分光光度法测定蜂王浆中蜂王酸的含量。
2. The first order derivative spectrophotometry was used for determination of ofloxacin in its gel.The interference of other ingredients can be eliminated.
   采用一阶导数分光光度法直接测定氧氟沙星凝胶剂的含量，能消除其它组分的干扰。