We must find economical methods for extracting oil from shale.

我们必须找到从页岩中采油的经济方法。

《新英汉大辞典》

Different methods for extracting sericin from cocoon-cooking water and waste water in silk mill were compared.

介绍利用煮茧水及缫丝厂的废液提取丝胶的方法，分析不同方法对丝胶的制取及水溶性的影响。

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Objective To compare the effects of ultrasonic and Soxhlet extraction methods for extracting naringin in Citrus grandis.

目的比较索氏提取法与超声波提取法提取化橘红中柚皮苷的效果。

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The emerging technologies involve different solvents, sorbents and membranes as well as methods for extracting carbon from the solvents and regenerating the solvents for reuse.

FORBES: Still Chasing Clean Coal, US Opens Carbon Capture Lab

The inquiry followed the planning application made by Miller Argent for the reclamation of land which also includes extracting coal by opencast methods.

BBC: NEWS | UK | Wales | South East Wales | Opencast goes before inspector