Employing the dynamic modeling and controller design method previously addressed, an automatic tree-trimming robot has been designed.

运用前面所提出的动力学建模和控制设计方法，完成了全自动树枝修剪机器人的设计。

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He had no experience in tree trimming or felling.

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Spending is projected to outpace revenue for years, and rising pension and retiree health care bills threaten money that could otherwise go to libraries, tree-trimming and street repairs.

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Instead, the electricity distributor recommends a good tree-trimming program.

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