Objective:To explore the relation of tympanic ostium of Eustachian tube and Eustachian tube dysfunction in chronic otitis media.
目的：探讨慢性中耳炎咽鼓管鼓室口病变与咽鼓管功能障碍的关系。
Middle ear atelectasis is one kind of common middle ear diseases, its pathogenesis related to eustachian tube dysfunction (ETD).
中耳不张是一种常见的中耳疾患，其发病机制与咽鼓管功能障碍(ETD)有关。
Objective To observe effect of eustachian tube dysfunction on function of internal ear in air crew.
目的探讨飞行人员咽鼓管机能障碍对内耳听功能和前庭功能的影响。
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