• Catalytic cracking is a main oil refining technique of making heavy oil lighter, and the mark and pillar of oil refining industry.

    催化裂化重质轻质化一个主要炼油工艺石油加工工业标志支柱

    youdao

  • Catalytic cracking is a main oil refining technique of making heavy oil lighter, and the mark and pillar of oil refining industry.

    催化裂化重质轻质化一个主要炼油工艺石油加工工业标志支柱

    youdao

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