thresholds阈值thresholdn.门槛；开端；界限；入口threshold partition阀值分割threshold switching阈值开关threshold of insula[医] 岛阈threshold pump rate阈值泵浦速率threshold potential阈值电位,阈电位,临界电位thresholding Filter滤波器threshold of fusion融合阈threshold mechanism阈值机制threshold extension门限扩展thresholding system阈值系统