| 摘要 |
In a crop roll forming machine having a reversibly rotatable upper bale forming means, lower bale forming means and a drive means there is provided a control means affixed to the frame movable between at least a first position and a second position for cooperative interaction with the drive means and the upper and lower bale forming means to selectively cause the lower bale forming means to be driven in a generally rearward direction when the control means is moved from the first position to the second position so that a partially formed crop roll is ejected rearwardly from the machine onto the ground.
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