機器
antique
background
bandage
brown
circle
cladding
closeup
corroded
corrosion
crumble
damage
destroyed
erosion
extreme
fractured
grating
grillroom
grunge
holes
industrial
industry
iron
layer
light
material
metal
obsolete
old
oxidation
oxidized
peel
perforated
perforation
recently
repetition
riveting
rough
rust
rusted
rusty
shabby
steel
textured
through
weathered