中英▼

  • The economic reasonabless of mine main fan ventilation and measures of saving power are expounded in the paper.

    阐述了矿井主扇通风的经济合理性及节约主扇电耗的措施。

    youdao

  • The economic reasonabless of mine main fan ventilation and measures of saving power are expounded in the paper.

    阐述了矿井主扇通风的经济合理性及节约主扇电耗的措施。

    youdao

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