在这一过程中如果可以经鼓室隔膜通气的话，尽管峡部闭锁也不会产生上鼓室的负压。
In this process, if may pass through drum room mutual lack of understanding ventilation, although the canyon department block system will not have on the drum room negative pressure.
目的 探讨颈动脉管、颈静脉窝与下鼓室的变异关系 ，为此区域手术提供可靠的解剖学资料。
Objective To explore the variable relationship among carotid canal, jugular pit and hypotympanum to provide applied anatomic data for the operations of jugular pit and hypotympanum region.
受感染的骨膜会因为鼓室内脓液使其膨胀而不能正常的移动。
An infected eardrum won't move as it should because the pus presses against it and may make it bulge.
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