Fatigue occurs when the interval of intermittent tetanic contraction of skeletal muscle is shortened to a certain degree and the contractile tension declines.
骨骼肌间断强直收缩期间，当刺激间隔缩短到一定程度时，收缩张力呈现逐步降低，即产生疲劳现象。
The cytobiology mechanisms of skeletal muscle contraction and fatigue in recent years have been analyzed and the correlative prevention and cure measures have been discussed in this paper.
对近年来有关肌细胞收缩及疲劳的细胞生物学机制研究成果进行了分析，探讨了相应的应对措施。
They result from sustained contraction of face and neck muscles, often due to fatigue, stress, or frustration.
肇因于面部和颈部肌肉的持续紧缩，通常是因过度劳累、压力和挫折而产生。
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