The revowing join of pedal is made of nanmeter plastic to reduce friction.
采用中空杆件的结构形式设计了空心轴脚蹬,对空心和实心两种轴的强度和刚度进行了计算分析。
The bicycle s pedal cranks keep indifferent equilibrium state when they stay in the free state,so that they can bring about disturbance between people and machines.
自行车脚蹬曲柄在自由状态时 ,曲柄处于随遇平衡 ,产生人机干扰 。
Analysis of stress and stiffness of the treadling force measurement device by F.E.M.;