Frontal structure feature
frontal(frontal)apron-plain
banded structure structure
newly-built structure and existing structure
Structure and electronic structure
the frame structure and masonry structure
Acute frontal sinusitis
ascending frontal bristle
ascending frontal bristles
bilateral frontal contusion and laceration
Bilateral frontal lobe laceration
blind frontal duplex structures
Bruise of bilateral frontal lobes
Chronic frontal sinusitis
cold frontal precipitation
endoscopic frontal sinus surgery
fenestration in frontal bone
Foot wall of nappe frontal fault