复发性突发性听力损失
recurrent sudden hearing loss
突发性化学事故
emergent chemical accident
常发性突变的基因座
bidirectional beam propagation
非突发性异常
nonparoxysmal abnormality
核及放射性突发事件
Nuclear and radiation accident
两侧同时突发性听力丧失
bilateral simultaneous sudden hearing loss
两侧突发性耳聋
bilateral sudden deafness
平流层突发性增温
The sudden stratospheric warming