求翻译：传出神经元最初的放电频率非常高当重复快速刺激传入神经时，但放电频率便逐渐减少经若干毫秒或数秒钟之后，这种就叫反射疲劳。反射疲劳发生在中枢的突触部位。因此，反射疲劳实质上就是突触传递的疲劳。突触疲劳的机制与突触前末梢递质的耗竭有关。据估计,如果神经递质的来源得不到及时补充,则突触前末梢所储备的神经递质仅够进行 1万次突触传递，其总量可耗竭在几秒钟内。是什么意思？

Efferent neurons of the initial discharge frequency is very high when the repeated rapid stimulation of afferent nerve discharge frequency will be gradually reduced by the number of milliseconds or a few seconds after, this is called reflection fatigue. The reflection fatigue occurred in central syn

The first of the neuronal discharge rate is very high when you repeat quickly stimulate incoming nerve discharge frequency, but it will gradually reduce the number of milliseconds or seconds, this is called a reflex fatigue. reflection in the central fatigue occurred in the area. Therefore, reflecti

Spreads the neuron initial discharging frequency to be extremely high when duplicates the fast stimulation afferent nerve, but the discharging frequency then gradually reduces after certain millisecond or several seconds, this kind is called the reflection to be weary.Reflects occurs wearily in main

Efferent neurons initially very high discharge rate when repeated rapidly when the afferent nerve stimulation, but discharge rate will gradually reduce the number by the number of milliseconds or seconds, this fatigue is called reflection. Reflection of fatigue occur in Central synapses parts. There

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