criticality value的用法和樣例：
例句
- Nothing happens until the excitatory stimulus exceeds a certain "threshold" value.
興奮性刺激超過(guò)某一臨界值以前毫無(wú)反應。 - The evolution of damage is determined by damage hardening condition, failure occurs when the hardening of damage reaches its critical value.
損傷演變由損傷強化條件決定，當損傷強化達到臨界值時(shí)，混凝土發(fā)生破壞。
