In this paper, a polar coordinate drill-rod lifter was developed to strictly control drill rod in order to precisely locate the rod.
作者研制了极坐标扶钎器可以严格的控制钎杆,从而保证孔位准确。
In this paper, a polar coordinate drill-rod lifter was developed to strictly control drill rod in order to precisely locate the rod.
作者研制了极坐标扶钎器可以严格的控制钎杆,从而保证孔位准确。
应用推荐