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.;
运动员脚蹬力测定装置的强、刚度分析
Analysis of stress and stiffness of the treadling force measurement device by F.E.M.;
运动员脚蹬力测定装置的强、刚度分析
This paper provides a calculation of stress and stiffness of the frames of the treadling force measurement device by finite element methods.
本文对运动员脚蹬力测定装置刚架结构的二种受力模型进行了强、度有限元计算。
rudder pedal adjustment
(方向舵)脚蹬调整
Sleep in, kick back, and enjoy your day off.
睡睡觉，蹬蹬脚，享受你的空闲。
brake(eg a fixed-wheel cycle)by reversing the pedalling action
倒蹬踏板制动（如脚蹬闸自行车）.
The thrusting motion of the legs in swimming.
打水游泳时蹬脚的动作
rudder pedal adjustment crank
方向舵脚蹬调整手柄
The feet crushed her back.
人们的脚蹬着她的后背。
Second, stretch both arms and cross them on the back of the seat in front of you, step on the floor with your feet firmly.
第二种：两臂伸直交叉，紧抓前面座椅靠背，头俯下，双脚用力蹬地。
Some swimmers, however, focus so much on spinning around QUICKLY, that they sometimes place their feet too high-- or too low-- on the wall.
一些选手太多地把注意力集中在快速的转身，而往往没有注意脚蹬在墙上过高或过低的问题。
a single-wheeled vehicle driven by pedals.
用脚蹬的一个轮子的车子。
rudder pedal steering system
方向舵脚蹬操纵式前轮转向系统
He walked up to the horse and put his foot in the stirrup.
他走到马的身边，把脚踏在马蹬上。
The boy pedaled away on his tricycle.
那男孩蹬着三轮脚踏车走了。
He wiggled his toes while stroking.
他边蹬车子边活动着脚趾。
his great jack-boots, his crimson sash,
脚蹬肥大长统靴，还背着大红肩带，
Investigation of Pedaling Force at Different Cadence in Cycle-ergometer;
不同踏蹬频率下自行车运动员踏蹬力研究
When they plant the feet too low, it's usually because they cannot WAIT to push off and start swimming again.
蹬脚过低，是因为他们没有等到恰当的蹬墙出发时机而开始蹬腿并游离池边。