名词
中文翻译：石油醚
同义词：
['petroleum spirit', 'petroleum ether', 'petroleum solvent']
例句：
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1.This petroleum ether is used in the extraction of crude oil.
这种石油醚用于原油的提取。
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2. The petroleum ether was found to have a high boiling point and low flash point.
这种石油醚被发现具有高沸点和低闪点。
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3. The petroleum ether was used as a solvent for the separation of impurities from the crude oil.
这种石油醚被用作从原油中分离杂质的溶剂。