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溶剂脱沥青
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溶剂脱沥青
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溶剂脱沥青
释
solvent deasphalting
溶剂脱沥青
用低碳烷烃作为溶剂萃取剂,将原油蒸馏所得的减压渣油(有时是常压渣油)分离成脱沥青油和脱油沥青的工艺过程。
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road in loess zone
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roadmaking with industrial waste
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road mixing method
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road of nationwide fitness
road on saline zone
road on soft clay ground
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