• 大量生产实践基础分析影响ERW直电阻钢管冲击韧性各种因素

    The article analyzes that all factors effect impacting toughness of welded seam of ERW pipe on the basis of mass produce and practice.

    youdao

  • 大量生产实践基础分析影响ERW直电阻钢管冲击韧性各种因素

    The article analyzes that all factors effect impacting toughness of welded seam of ERW pipe on the basis of mass produce and practice.

    youdao

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