機器
abstract
aged
alloy
aluminum
background
barrier
black
brown
construction
copper
damaged
dark
detail
dirty
fence
frame
gray
grid
grunge
heavy
industrial
iron
material
metal
metallic
old
part
pattern
plate
protection
retro
rough
rust
rustic
rusty
scratched
security
sheet
shiny
stain
stainless
steel
surface
texture
textured
vintage
wall
weathered
worn