Hanging knee raises. Chinup bar required. (Video.)
悬垂屈膝举腿。需引体向上杠杆。(视频)。
Based on analyzing the knee joints of the four bar linkage, this paper presents the concepts of the stable well off angle, absolute and relative instantaneous distance.
对多轴膝关节进行了分析，提出了承重稳定裕度角、全伸展位绝对瞬心距和相对瞬心距的概念，用于评价下肢假肢的稳定性和相对稳定性。
An intelligent prosthetic limb knee joint with a cylinder stationary type four-bar mechanism belongs to the fields of biological medicine engineering and rehabilitation assistant devices.
一种气缸固定式四杆机构智能假肢膝关节，属于生物医学工程和康复辅具技术领域。
There was a little girl 11twirling around on a bar, one knee wrapped tightly around the bar and fashioned behind her knee.
有个小女孩正在一个杠上快速地转动，一条腿紧紧地勾在杠上。
There was a little girl 11 twirling around on a bar, one knee wrapped tightly around the bar and fashioned behind her knee.
有个小女孩正在一个杠上快速地转动，一条腿紧紧地勾在杠上。
There was a little girl 11 twirling around on a bar, one knee wrapped tightly around the bar and fashioned behind her knee.
有个小女孩正在一个杠上快速地转动，一条腿紧紧地勾在杠上。
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