名词
中文翻译：超滤液
同义词：
['ultrafiltrate', 'permeate', 'filtrate']
例句：
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1. The supernatant liquid was collected from the top of the column.
从柱顶收集到的超滤液。
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2.The supernatant liquid was analyzed for its chemical composition.
对超滤液进行了化学成分分析。
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3. The supernatant liquid was used to remove impurities from the solution.
超滤液被用来从溶液中去除杂质。