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超临界流体萃取法
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超临界流体萃取法
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超临界流体萃取法
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supercritical fluid extraction
超临界流体萃取法
利用超临界流体为溶剂,从固体或液体中萃取出某些有效组分,并进行分离的一种技术。超临界流体指某种气体(液体)或气体(液体)混合物在操作压力和温度均高于临界点时,密度接近液体,而其扩散系数和黏度均接近气体,其性质介于气体和液体之间的流体。
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pipeline leakage monitoring
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