Methods: Blood concentration of theophylline was determined by double-wavelength ultraviolet spectrophotometry.

方法：采用双波长紫外分光光度法测定茶碱谷浓度。

youdao

Methods: Blood concentration of theophylline was determined by double-wavelength ultraviolet spectrophotometry.

方法：采用双波长紫外分光光度法测定茶碱谷浓度。

youdao