当人中风时，大脑中的血流量会骤然减少或中断，导致大脑损伤或脑细胞死亡。
A stroke occurs when blood flow to the brain is decreased or interrupted, causing brain damage and brain cell death.
ARF发生时，肾脏存在异常的肾血流动力学的改变，肾血流量减少50％，肾小球有效滤过压下降。
There are inappropriate changes of renal hemodynamics that renal blood flow reduce 50%, and glomerular function reduce rapid at the process of ARF.
当网络流量过多使网络出现拥挤时，反馈信号将使适应性用户做出减少数据包发送的反应。
When the network traffic is too much and network congestion has occurred, the feedback signal will help the adaptive users to decrease the data package transmission.
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