guide drill rod ; core barrel rod ; oversize rod
导向螺杆钻具 stearablea emly
冲击钻杆导向器 auger sinker bar guides
钻杆导向器 pipe guide
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钻杆由钻杆夹头夹持,由钻杆导向装置支撑引导,由车床大拖板带动实现进给运动。
The drilling bar is clamped by a holder, supported by a guiding unit, and the feeding motion is realized by the saddle of the lathe.
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不移动