• Safety effective of metal forepole support was analyzed in beam and bolting with wire mesh, problem and improvement was given safety effective was ensured.

    针对金属支护架棚支护巷道中的安全作用进行了全面分析,提出改进方案存在问题,确保了金属前探支护的安全作用。

    youdao

  • Safety effective of metal forepole support was analyzed in beam and bolting with wire mesh, problem and improvement was given safety effective was ensured.

    针对金属支护架棚支护巷道中的安全作用进行了全面分析,提出改进方案存在问题,确保了金属前探支护的安全作用。

    youdao

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