bird’s eye structure

bull‘s eye structure

bull’s eye structure

compound eye structure

internal eye structure and Six Jing theory

eye and eyebrow structure

banded structure structure

an eye for an eye

an eye for an eye and a tooth for a tooth

eye and eye turnbuckle

eye relief (=eye-point distance)

eye relief，eye distance

eye to eye contact

eyetoeye contact

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