▎ 摘　　要

Using the density functional theory, we investigate the effect of partially hydrogenation and fluorination on the mechanical and electronic properties of the graphene nanoribbon under strains. The results demonstrate that stress and Young's modulus of partially substituted hybrid systems by FGNR's are smaller than those by GANR's and FGANR's. However, substitutions by FGNR's increase the band gap of AGNRs more than ones by others, regardless of nanoroads and strains. Interestingly, for the hybrid system with 5-nanoroad of FGANR's, two highest valence bands near Fermi level are almost in consistence, and the band widths get narrow according to increase of strain.