It is a walking-frame rotary drill rig, suitable for industrial and civil piling construction.

该机是适应于工业与民用建筑桩基础施工的步履式螺旋钻机。

youdao

It is a walking-frame rotary drill rig, suitable for industrial and civil piling construction.

该机是适应于工业与民用建筑桩基础施工的步履式螺旋钻机。

youdao