• 对松花江大桥钢梁用q 42 0e厚板对接接头弧焊焊接工艺进行了研究。

    In this paper the Submerged Arc Welding procedures for Q420E butt joint of Songhua River Stayed-cable Bridge were investigated.

    youdao

  • 对松花江大桥钢梁用q 42 0e厚板对接接头弧焊焊接工艺进行了研究。

    In this paper the Submerged Arc Welding procedures for Q420E butt joint of Songhua River Stayed-cable Bridge were investigated.

    youdao

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