the first order derivative spectrophotometry 采用一阶导数
first order derivative uv spectrophotometry 一阶导数紫外分光光度法
first order derivative uv-spectrophotometry 一阶导数光谱
first-order derivative uv spectrophotometry 一阶导数紫外分光光度法
first-order derivative ultraviolet spectrophotometry 一阶导数紫外分光光度法
METHODS: The first order derivative spectrophotometry was used.
方法：采用一阶导数分光光度法。
The content of etoposide injection was determined by first order derivative spectrophotometry.
用一阶导数光谱法测定足叶乙甙注射液的含量。
Method: The content of fluconazole in gel was measured by first order derivative spectrophotometry.
方法：采用一阶导数分光光度法进行含量测定。
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