求翻译：两个相同强度的阈上刺激，相继作用与神经－肌肉标本，如果刺激间隔大于单收缩的时程，肌肉则出现两个分离的单收缩；如果刺激间隔小于单收缩的时程而大于不应期，则出现两个收缩反应的重叠，称为收缩的总和。当同等强度的连续阈上刺激作用与标本时，则出现多个收缩反应的叠加，此为强直收缩。当后一收缩发生在前一收缩的舒张期时，称为不完全强直收缩；后一收缩发生在前一收缩的收缩期时，各自的收缩则完全融合，肌肉出现持续的收缩状态，此为完全强直收缩。是什么意思？

Two to stimulate the same intensity threshold, successively the role of nerve - muscle specimens, if the stimulus interval is greater than a single contraction of the schedule, the muscles are two separate single contraction; the stimulus interval is less than a single contraction duration refractor

Two of the same strength of the stimulus threshold on role, and nerve-muscle samples, if you stimulate the interval greater than single contraction, muscle is the emergence of two separate single contraction; if you stimulate contraction of the intervals of less than one time period, and should not

On two same intensity thresholds stimulates, successive effect and nerve - muscle specimen, if the stimulation gap is bigger than the list contraction the time interval, the muscle appears the list contraction which two separate; If the stimulation gap is smaller than the list contraction time inter

Two stimulus on the threshold of the same strength, function and nerve-muscle specimen in succession, if the stimulus interval is greater than the duration of contraction, muscle contraction of two separate; if the stimulus interval is less than the duration of contraction is greater than the refrac

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