在测试过机械翼果之后，研究者们又造出了自带动力源，远程控制的机器翅果。

After testing the mechanical samara, the researchers then built a variety of remote-controlled robotic samaras with onboard power sources.

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本文考察带动力学不确定性的刚性机械臂的跟踪控制问题。

The problem of tracking control for a rigid robot manipulator with uncertainties in its dynamics is considered in this paper.

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