circular folded plate shell roof
Reticulated Steel Shell Roof
Thin-shell-roof gymnasium
shell-to-shell distance
Changing flat roof to slope roof
diagonal ridge for hip roof，vertical ridge for gable roof
flat- roof-to- slope-roof
flat-roof-to-slope-roof
flat-roof-to-sloping roof
roof pressure roof weight
roof prism (=roof-angle prism)
(Ag)core·（Au）shell composite nanoparticles
(Au)core(Ag)shell nanoparticle
(Au)core·（Ag）shell（composite） nano-particles