The research study pharyngotympanic tube function of balance pressure by Az-26 Impedance Audiometer made in Dane.

• 应用丹麦生产的Az -2 6型声阻抗仪 ,对反复发作的慢性扁桃体炎所致的扁桃体肥大进行咽鼓管气压平衡功能的测定。