Double triangle boom is a kind of directly positioning mechanism, it can remove the drill rod to a target position directly in its operating range.
双三角钻臂属于直接定位钻臂，在工作区间可将钎头直接移位到目标位置。
Double triangle boom is a kind of directly positioning mechanism, it can remove the drill rod to a target position directly in its operating range.
双三角钻臂属于直接定位钻臂，在工作区间可将钎头直接移位到目标位置。
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