• 本文以600龙门吊研究了大型起重机结构焊接制造工艺

    In this paper, 600 tons gantry was studied as an example of the construction process of large-scale crane structure.

    youdao

  • 本文以600龙门吊研究了大型起重机结构焊接制造工艺

    In this paper, 600 tons gantry was studied as an example of the construction process of large-scale crane structure.

    youdao

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