外观和品尝法的鉴定结果准确度低，误差较大；
The measuring result by appearance and tasting method was low in accuracy.
通过对工业废水中油含量分析方法的改进，解决了原有方法准确度低、重现性差等问题，提高了环保测试质量。
Through improving oil content analysis method of industrial wastewater, low accuracy and worse repetition problems of former method were solved, and environmental test quality was improved.
结果表明，本方法检出限低，准确度高，精密度好。
The result shows that this method has such advantages as low detection limit, high accuracy and good precision.
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