In between the tragus and the isthmus, the external auditory canal presented an anterior angu-lation of °-° on the horizontal plane.
In between the tragus and the isthmus, the external auditory canal presented an anterior angu-lation of °-° on the horizontal plane.
由外耳道口外耳屏处向峡部走向有一水平前突角,其夹角多为 ～°。