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一种槽型上翼缘板的钢-混凝土组合梁

  • Release time:2024-11
  • Hits:

  • Type of Patent: 

    Invent

  • State of Patent: 

    Authorized patents

  • Authorization number: 

    ZL201710624341.X

  • Service Invention or Not: 

    no

  • Application Date: 

    2017-07

  • Authorization Date: 

    2020-02