The results shows that the repeatability and accuracy are both better than before by using the titration curve or differential curve to determine the destinations.
结果表明，采用滴定曲线或微分曲线确定终点，测定结果的重复性和准确度均有较大提高。
The stability and repeatability of reagent and the working curve slope is proved to be well through experiment.
实验证明试剂和工作曲线的斜率有很好的稳定性和重现性。
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