In scientific terms, the process is no longer percolation, but extraction.

在科学计算，过程不再是渗流，但提取。

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The results showed that extraction temperature and solid-liquid ratio had a significant impact on the extraction yield of polysaccharides, but extraction time was not significant.

结果显示，提取温度和料液比对多糖提取率有显著性影响，提取时间对多糖提取率无显著性影响。

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But recovery operations often require extraction of large amounts of data when DBAs don't have much time.

但是，恢复操作往往需要提取大量数据，而数据库管理员可能没有这么多的时间。

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But extraction is, as the saying goes, a different kettle of fish from most industries.

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But extraction of such resources can be technologically challenging and expensive.

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Repsol struck oil there in 2004, but decided extraction would not be profitable.

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