名词
中文翻译：Unknown
同义词：
['1. extraction', '2.extraction method', '3. extraction test']
例句：
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1. The process of extractive titration is crucial in the analysis of metals.
提取滴定过程在金属分析中至关重要。
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2. The extraction method used in this study was effective in isolating the active ingredient.
研究中使用的提取方法有效分离了活性成分。
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3. The extraction test results showed that the sample contained a significant amount of heavy metals.
提取测试结果显示样本含有大量重金属。