用缺氧空气保存食品和衣服：preserve food and clothes in oxygen free air 用离心法分离：spin off 用氮气保存去皮的马铃薯：preserve peeled potato with nitrogen ..
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它可以用离心法分离。
用改进的不连续蔗糖密度梯度离心法分离到五条带。
Five zones were separated by improved discontinuous sucrose gradient centrifugation.
用密度梯度离心法分离并计数支气管肺泡灌洗液（BALF）中的嗜酸性粒细胞；
The eosinophils in broncho-alveolar lavage fluid (BALF) were separated by density gradient centrifugation.
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