multiple refining technologies
multiple refining technologies
多种精炼技术
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The production technologies for multiple petrochemical raw materials were introduced with the theoretical mechanism explained by conversion of chemical structures in the refining process.
介绍了炼油过程中多产石油化工原料的有关工艺技术，从化学结构转化角度阐明了理论依据。
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