membrana tympani

基本解释

The membrana tympani is about 6mm in diameter and forms the dorso- medial wall of the medial end of the external acoustic meatus.
鼓膜北京鸭的鼓膜直径约6毫米，构成外耳道内端的背侧壁。
The sound-conducting apparatus in the middle-ear of domestic fowls includes the membrana tympani, columella, musculus tensor tympani and several ligaments.
鸭的中耳传声器官主要包括：鼓膜、听骨、张肌及韧带四部分。