工作台纵向移动为液压控制。
一个伺服驱动两片侧翼交替地纵向移动，驱使羽翼上下运动。
A servo drive pulls the two flanks alternately in longitudinal direction, thus moving the wing up and down.
尾架：安装在床身导轨上，并沿此导轨纵向移动，以调整其工作位置。
The tail frame: installed in bed, and guide rail along the guide rail, adjusting to the longitudinal mobile work position.
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