The lower leg is represented by the medial crura whereas each upper leg consists of a lateral crural complex based bilaterally on the piriform aperture.
下方的腿代表的是内侧脚，同时上方两条腿则代表双侧的梨状孔上的外侧脚复合体。
2
Medial and space imaging problems similar to seismic imaging, including time-lapse monitoring, 3D visualization, complex media imaging and 3D near surface imaging.