• Effects of column stiffeners, bolt arrangement, bolt number, U-steel width and U-steel extended length are studied.

    研究加劲肋螺栓排列、螺栓数目槽钢宽度槽钢下长度影响。

    youdao

  • For rock roadway layout layer, the necessity and feasibility of using nude alley, a hell of arch, the U-steel shed, bolt net and spraying and other forms of support are expounded.

    针对岩巷布置层位,阐述了采用、砌碹、u型钢多种支护形式并存必要性可行性

    youdao

  • The mill comprises roll changing hydrocylinder (1), with rolling mill group (3), roll changer (2), post (4), worm wheel lifting gear (5), U-shaped frame (7), rotation ear (8) and bolt (9).

    其特征在于本轧机包括液 压1)、换辊小车(2)、轧钢机辊3)、立柱4)、蜗轮升降机构(5)、U7)、转动转8)、连接螺栓9);

    youdao

  • The mill comprises roll changing hydrocylinder (1), with rolling mill group (3), roll changer (2), post (4), worm wheel lifting gear (5), U-shaped frame (7), rotation ear (8) and bolt (9).

    其特征在于本轧机包括液 压1)、换辊小车(2)、轧钢机辊3)、立柱4)、蜗轮升降机构(5)、U7)、转动转8)、连接螺栓9);

    youdao

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