• The proposed approach was applied in the product development of horizontal directional drilling machine and its feasibility was verified.

    最后给出了水平定向钻机完整产品总体设计方案配置实例,验证了所提方法可行性

    youdao

  • The basic work principle and equipment composition of non-excavation technique of directional drilling machine have been introduced in this paper.

    介绍采用定向开挖技术基本工作原理设备组成

    youdao

  • The basic work principle and equipment composition of non-excavation technique of directional drilling machine have been introduced in this paper.

    介绍采用定向开挖技术基本工作原理设备组成

    youdao

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