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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In the design graphics of agricultural machinery, we often deal with a oblique rod which plays a supporting role. In assembly drawing it is difficult to determine the form and position of the rod.

在农业机械的设计制图中，常涉及一根起支撑作用的斜杆，在装配图中由于它处于倾斜位置，难于确定它的形状和位置。

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In one example, a plunger moves within the central bore in the rod between a first position where less damping is provided and a second position where increased damping is achieved.

举一个例子，在中央负有之间的第一个位置上，不阻尼杆柱塞提供移动和第二个位置上，增加了阻尼的实现。

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