Conclusions Ultrasonic extraction was a simple method, with high extraction efficiency.

结论超声提取方法简单，提取率高，低耗高效。

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Those techniques were mainly focused on integration, fast and high extraction efficiency.

上述技术的研究重点集中于集成化、快速和高萃取率。

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Mr. Foker himself is a worthy man, though not of high extraction or indeed much education.

福克先生本人也是值得尊敬的，尽管他出身不太高贵，受的教育确实也有限。

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Royalties on production discriminate against ageing mines, with high extraction costs.

ECONOMIST: The political dangers of taxing carbon and mining

Suncor has run into an extra rich piece of ore with a high coal component, he said, which caused problems in the extraction process.

FORBES: Magazine Article

Fracking is a technique of shale gas extraction that involves pumping water and chemicals into shale rock at high pressure to extract gas.

BBC: Lancashire shale gas 'could be worth billions'