Frontal structure feature
frontal(frontal)apron-plain
banded structure structure
trans-frontal sinus frontal approach
connecting the newly built structure to the pristine structure
epsilon structure (= e-structure)
newly-built structure and existing structure
reinforces structure and monsary structure
step-by-step lattice structure optimization and random lattice structure optimization
Structure and electronic structure
structure safety of structure
structure-spanning-structure system
the frame structure and masonry structure
TLK structure (=terrace-ledge-kink structure)
Scaly structure (Squamose structure)
Acute frontal sinusitis
ascending frontal bristle