The pinna is the visible part of the ear, just right for grasping naughty boys by.
耳廓是耳朵明显可见的一部分，非常适合用于抓住淘气的小男孩。
The outer ear (the pinna) receives a single sound wave composed of different sounds.
外耳(耳廓)收集含不同声音的单声波。
Directivity and sound diffraction of the pinna of the Megaderma spasma are studied to predict the the role of these outer ear extensions in the biosonar system.
本文研究的重点就是通过模拟计算来预测这种明显的外耳扩展部分对波束形成的影响。
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