• And the introduction of ac Variable Frequency Speed Regulating technology in the petroleum domain has become a effective action to conserve energy and improve the product quality.

    石油领域引入交流变频调速技术成为节能以及提高产品质量有效措施

    youdao

  • And the introduction of ac Variable Frequency Speed Regulating technology in the petroleum domain has become a effective action to conserve energy and improve the product quality.

    石油领域引入交流变频调速技术成为节能以及提高产品质量有效措施

    youdao

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