• A reinforcing iron strip for roof plate supporting relates to an assembly which comprises an anchor shaft eyelet, an iron strip body and projection clubs.

    顶板支护用补强涉及锚杆眼孔、钢带组成

    youdao

  • A reinforcing iron strip for roof plate supporting relates to an assembly which comprises an anchor shaft eyelet, an iron strip body and projection clubs.

    顶板支护用补强涉及锚杆眼孔、钢带组成

    youdao

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