METHODS: The method of ultraviolet spectrophotometry was used.
方法：采用紫外分光光度法。
The residue rate of methyl orange was detected with the method of ultraviolet spectrophotometry, and the gastric emptying rate of the animals were measured.
分光光度计比色法检测小鼠甲基橙胃残留率，观察胃排空率。
A evaluation method for the performances and quality of chromatographic grade acetonitrile with ultraviolet spectrophotometry and high performance liquid chromatography is presented.
利用紫外分光光度计和高效液相色谱仪建立了色谱纯乙腈的性能和质量的评价方法。
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