本文针对炼油企业各个环节的特点，建立了炼油企业生产运营系统活动模型。
An activity model of production and operation system in refinery is presented on the basis of its own characteristics.
本文针对炼油企业各个环节的特点，建立了炼油企业生产运营系统活动模型。
An activity model of production and operation system in refinery is presented on the basis of its own characteristics.
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