以下为句子列表：
英文: The experimental results indicated that the colour-changing ranges got narrow, and the titration accuracy was increased when an appropriate surfactant micellar solution was chosen as a titration medium.
中文: 实验结果表明，表面活性剂存在时，酸碱指示剂的离解平衡及其变色范围将发生改变，选择适当的胶束溶液作为滴定介质，可以扩大酸碱指示剂的应用范围，同时也可以提高滴定的准确度。
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