In this paper, the above-knee prosthesis with a pneumatic swing control knee joint has been designed with the theory of mechanisms, biomechanics and fluid mechanics.

本文应用机构学、生物力学和流体力学等方面的理论，对气压膝关节大腿假肢进行了较为系统的分析和研究。

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Change regularity of joint swing Angle is studied when movable platform moves in space.

对虚轴机床的活动平台在空间运动时关节摆角的变化规律进行了研究。

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Its crucial part is intelligent controller, which controls bend and stretch of the knee joint of artificial leg as well as shank swing and often adopts fuzzy control strategy.

它的关键部件是控制人工腿膝关节屈伸运动及小腿摆动的智能控制器，其常常采用模糊控制策略。

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Ericsson reported a steep fall in fourth-quarter net profit on a combination of more cautious spending from U.S. carriers, losses at joint ventures and an unfavorable swing in its business mix.

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