踏板上下移动，同时也交替着弯曲伸直着脚踝，迫使肌肉纤维交替着伸长缩短。
The footplate moved up and down so it alternately bent and straightened the ankle, forcing the fibres within the muscles to alternately lengthen and shorten.
在椎弓根螺钉交替节段固定侧弯脊柱的情况下，我们对支点弯曲影像的预测值进行评估。
We assessed the predictive value of the fulcrum bending radiograph in the context of alternate-level pedicle screw fixation of the scoliotic spine.
因此，通过交替地加热和冷却所述两个致动器，所述手指可以作出弯曲和伸直。
So by alternately heating and cooling the two actuators, the finger in could be made to bend and straighten.
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